Substituted indenyl containing metal complexes and olefin polymerization process

Group 4 metal complexes comprising an indenyl group substituted in the 2 or 3 position with at least one group selected from hydrocarbyl, fluoro-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, dialkylamino-substituted hydroacrbyl, silyl, germyl and mixtures thereof, said indenyl group further being covalently bonded to the metal by means of a divalent ligand group, catalytic derivatives thereof and their use as olefin polymerization catalysts are disclosed.

This invention relates to class of Group 4 metal complexes and to olefin 
polymerization catalysts derived therefrom that are particularly suitable 
for use in a polymerization process for preparing polymers by 
polymerization of .alpha.-olefins and mixtures of .alpha.-olefins. 
Constrained geometry metal complexes and methods for their preparation are 
disclosed in EP-A-416,815; EP-A-468,651; EP-A-514,828; EP-A-520,732 and 
WO93/19104, as well as U.S. Pat. Nos. 5,055,438, 5,057,475, 5,096,867, 
5,064,802, 5,132,380, and WO95/00526. 
According to the present invention there are provided metal complexes 
corresponding to the formula: 
##STR1## 
wherein: 
M is titanium, zirconium or hafnium in the +2, +3 or +4 formal oxidation 
state; 
A' is a substituted indenyl group substituted in at least the 2 or 3 
position with a group selected from hydrocarbyl, fluoro-substituted 
hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, 
dialkylamino-substituted hydrocarbyl, silyl, germyl and mixtures thereof, 
said group containing up to 40 nonhydrogen atoms, and said A' further 
being covalently bonded to M by means of a divalent Z group; 
Z is a divalent moiety bound to both A' and M via .sigma.-bonds, said Z 
comprising boron, or a member of Group 14 of the Periodic Table of the 
Elements, and also comprising nitrogen, phosphorus, sulfur or oxygen; 
X is an anionic or dianionic ligand group having up to 60 atoms exclusive 
of the class of ligands that are cyclic, delocalized, .pi.-bound ligand 
groups; 
X' independently each occurrence is a neutral Lewis base ligating compound, 
having up to 20 atoms; 
p is 0, 1 or 2 and is two less than the formal oxidation state of M, with 
the proviso that when X is a dianionic ligand group, p is 1; and 
q is 0, 1 or 2. 
The above complexes may exist as isolated crystals optionally in pure form 
or as a mixture with other complexes, in the form of a solvated adduct, 
optionally in a solvent, especially an organic liquid, as well as in the 
form of a dimer or chelated derivative thereof, wherein the chelating 
agent is an organic material, preferably a neutral Lewis base, especially 
a trihydrocarbylamine, trihydrocarbylphosphine, or halogenated derivative 
thereof. 
Further according to the present invention there is provided a process for 
preparing polymers of olefin monomers comprising contacting one or more 
such monomers with a catalyst comprising: 
1) a metal complex corresponding to the formula: 
##STR2## 
wherein: 
M is titanium, zirconium or hafnium in the +2, +3 or +4 formal oxidation 
state; 
A' is a substituted indenyl group substituted in at least the 2 or 3 
position with a group selected from hydrocarbyl, fluoro-substituted 
hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, 
dialkylamino-substituted hydrocarbyl, silyl, germyl and mixtures thereof, 
said group containing up to 40 nonhydrogen atoms, and said A' further 
being covalently bonded to M by means of a divalent Z group; 
Z is a divalent moiety bound to both A' and M via .sigma.-bonds, said z 
comprising boron, or a member of Group 14 of the Periodic Table of the 
Elements, and also comprising nitrogen, phosphorus, sulfur or oxygen; 
X is an anionic or dianionic ligand group having up to 60 atoms exclusive 
of the class of ligands that are cyclic, delocalized, .pi.-bound ligand 
groups; 
X' independently each occurrence is a neutral Lewis base ligating compound, 
having up to 20 atoms; 
p is 0, 1 or 2 and is two less than the formal oxidation state of M, with 
the proviso that when X is a dianionic ligand group, p is 1; and 
q is 0, 1 or 2: and 
2) an activating cocatalyst 
the molar ratio of 1) to 2) being from 1:10,000 to 100:1, or 
the reaction product formed by converting 1) to an active catalyst by use 
of an activating technique. 
The present catalysts and process result in the highly efficient production 
of high molecular weight olefin polymers over a wide range of 
polymerization conditions, and especially at elevated temperatures. They 
are especially useful for the solution polymerization of 
ethylene/propylene (EP polymers) and ethylene/propylene/diene (EPDM 
polymers) wherein the diene is ethylidenenorbornene, 1,4-hexadiene or 
similar nonconjugated diene. The use of elevated temperatures dramatically 
increases the productivity of such process due to the fact that increased 
polymer solubility at elevated temperatures allows the use of increased 
conversions (higher concentration of polymer product) without exceeding 
solution viscosity limitations of the polymerization equipment as well as 
reduced energy costs needed to devolatize the reaction product. 
All reference to the Periodic Table of the Elements herein shall refer to 
the Periodic Table of the Elements, published and copyrighted by CRC 
Press, Inc., 1989. Also, any reference to a Group or Groups shall be to 
the Group or Groups as reflected in this Periodic Table of the Elements 
using the IU system for numbering groups. 
Olefins as used herein are C.sub.2-20 aliphatic or aromatic compounds 
containing vinylic unsaturation, as well as cyclic compounds such as 
cyclobutene, cyclopentene, and norbornene, including norbornene 
substituted in the 5 and 6 position with C1-20 hydrocarbyl groups. Also 
included are mixtures of such olefins as well as mixtures of such olefins 
with C.sub.4-40 diolefin compounds. Examples of the latter compounds 
include ethylidene norbornene, 1,4-hexadiene, norbornadiene, and the like. 
The catalysts and process herein are especially suited for use in 
preparation of ethylene/1-butene, ethylene/1-hexene, ethylene/styrene, and 
ethylene/1-octene copolymers as well as terpolymers of ethylene, propylene 
and a nonconjugated diene, that is EPDM terpolymers. 
Preferred X' groups are carbon monoxide; phosphines, especially 
trimethylphosphine, triethylphosphine, iophenylphosphine and 
bis(1,2-dimethylphosphino)ethane; P(OR)).sub.3, wherein R is as previously 
defined ethers, especially tetrahydrofuran; amines, especially pyridine, 
bidyridine, tetramethylethylenediamine (TMEDA), and triethylamine; 
olefins; and conjugated dienes having from 4 to 40 carbon atoms. Complexes 
including the latter X' groups include those wherein the metal is in the 
+2 formal oxidation state. 
Preferred coordination complexes used according to the present invention 
are complexes corresponding to the formula: 
##STR3## 
wherein: 
R.sub.1 and R.sub.2, independently are groups selected from hydrogen, 
hydrocarbyl, perfluoro substituted hydrocarbyl, silyl, germyl and mixtures 
thereof, said group containing up to 20 nonhydrogen atoms, with the 
proviso that at least one of R.sub.1 or R.sub.2 is not hydrogen; 
R.sub.3, R.sub.4, R.sub.5, and R.sub.6 independently are groups selected 
from hydrogen, hydrocarbyl, perfluoro substituted hydrocarbyl, silyl, 
germyl and mixtures thereof, said group containing up to 20 nonhydrogen 
atoms; 
M is titanium, zirconium or hafnium; 
Z is a divalent moiety comprising boron, or a member of Group 14 of the 
Periodic Table of the Elements, and also comprising nitrogen, phosphorus, 
sulfur or oxygen, said moiety having up to 60 non-hydrogen atoms; 
p is 0, 1 or 2; 
q is zero or one; 
with the proviso that: 
when p is 2, q is zero, M is in the +4 formal oxidation state, and X is an 
anionic ligand selected from the group consisting of halide, hydrocarbyl, 
hydrocarbyloxy, di(hydrocarbyl)amido, di(hydrocarbyl)phosphido, 
hydrocarbylsulfido, and silyl groups, as well as halo-, 
di(hydrocarbyl)amino-, hydrocarbyloxy- and 
di(hydrocarbyl)phosphino-substituted derivatives thereof, said X group 
having up to 20 nonhydrogen atoms, 
when p is 1, q is zero, M is in the +3 formal oxidation state, and X is a 
stabilizing anionic ligand group selected from the group consisting of 
allyl, 2-(N,N-dimethylaminomethyl)phenyl, and 
2-(N,N-dimethyl)-aminobenzyl, or M is in the +4 formal oxidation state, 
and X is a divalent derivative of a conjugated diene, M and X together 
forming a metallocyclopentene group, and 
when p is 0, q is 1, M is in the +2 formal oxidation state, and X' is a 
neutral, conjugated or nonconjugated diene, optionally substituted with 
one or more hydrocarbyl groups, said X' having up to 40 carbon atoms and 
forming a .pi.-complex with M. 
More preferred coordination complexes used according to the present 
invention are complexes corresponding to the formula: 
##STR4## 
wherein: 
R.sub.1 and R.sub.2 are hydrogen or C.sub.1-6 alkyl, with the proviso that 
at least one of R.sub.1 or R.sub.2 is not hydrogen; 
R.sub.3, R.sub.4, R.sub.5, and R.sub.6 independently are hydrogen or 
C.sub.1-6 alkyl; 
M is titanium; 
Y is --O--, --S--, --NR.sup.* --, --PR.sup.* --; 
Z.sup.* is SiR.sup.*.sub.2, CR.sup.*.sub.2, SiR.sup.*.sub.2 
SiR.sup.*.sub.2, CR.sup.*.sub.2 CR.sup.*.sub.2, CR.sup.* .dbd.CR.sup.*, 
CR.sup.*.sub.2 SiR.sup.*.sub.2, or GeR.sup.*.sub.2 ; 
R.sup.* each occurrence is independently hydrogen, or a member selected 
from hydrocarbyl, hydrocarbyloxy, silyl, halogenated alkyl, halogenated 
aryl, and combinations thereof, said R.sup.* having up to 20 non-hydrogen 
atoms, and optionally, two R.sup.* groups from Z (when R.sup.* is not 
hydrogen), or an R.sup.* group from Z and an R.sup.* group from Y form a 
ring system; 
p is 0, 1 or 2; 
q is zero or one; 
with the proviso that: 
when p is 2, q is zero, M is in the +4 formal oxidation state, and X is 
independently each occurrence methyl or benzyl, 
when p is 1, q is zero, M is in the +3 formal oxidation state, and X is 
2-(N,N-dimethyl)aminobenzyl: or M is in the +4 formal oxidation state and 
X is 1,4-butadienyl, and 
when p is 0, q is 1, M is in the +2 formal oxidation state, and X' is 
1,4-diphenyl-1,3-butadiene or 1,3-pentadiene. The latter diene is 
illustrative of unsymetrical diene groups that result in production of 
metal complexes that are actually mixtures of the respective geometrical 
isomers. 
Highly preferred metal complexes are: 
2-methylindenyl complexes: 
(t-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dimethyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV 
dibenzyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dimethyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methylindenyl)-silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methylindenyl)-silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methylindenyl)-silanetitanium ((III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methylindenyl)-silanetitanium (IV) dimethyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methylindenyl)-silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methyl-indenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methylin-denyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methyl-indenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dimethyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dimethyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -2-methylindenyl)silanetitanium 
(IV) dibenzyl, 
2,3-dimethylindenyl complexes: 
(t-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (IV) 
dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (IV) 
dibenzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dimethyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV dibenzyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dimethyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dibenzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)-silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)-silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)-silanetitanium ((III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)-silanetitanium (IV) dimethyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)-silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
(2,3-dimethyl-indenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
(2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
(2,3-dimethylin-denyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
(2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
(2-methyl-indenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dimethyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dibenzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dimethyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -2,3-dimethylindenyl)silanetitanium 
(IV) dibenzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3-dimethylindenyl)silanetitanium (IV) dibenzyl, 
3-methylindenyl complexes: 
(t-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dimethyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV 
dibenzyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylamilido)dimethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dimethyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-3-methylindenyl)-silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-3-methylindenyl)-silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-3-methylindenyl)-silanetitanium ((III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-3-methylindenyl)-silanetitanium (IV) dimethyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-3-methylindenyl)-silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-3-methyl-indenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-3-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-3-methylin-denyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-3-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-3-methyl-indenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dimethyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-3-methylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-3-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-3-methylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-3-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-3-methylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (II) 
1,3-pentadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dimethyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium (IV) 
dibenzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dimethyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dibenzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-3-methylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dimethyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 -3-methylindenyl)silanetitanium 
(IV) dibenzyl, 
2-methyl-3-ethylindenyl complexes: 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)-silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)-silanetitanium 
(II) 1,3-pentadiene, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)-silanetitanium 
(III)2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dimethyl, 
(n-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dibenzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethyl(-2-methyl-3-ethylindenyl)silanetitanium (IV) 
dimethyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2-methyl-3-ethyl-indenyl)silanetitanium (II) 
1,4-diphenyl-1,3-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)-silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)-silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dibenzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethyl-indenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(cyclododecylamido)diisopropoxy(-2-methyl-3-ethyl-indenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)-silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)-silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)-silanetitanium (IV) dimethyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)-silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethyl-indenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(II) 1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methyl-3ethylindenyl)silanetitanium 
(II) 1,3-pentadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dimethyl, 
(n-butylamido)dimethoxy(.eta..sup.5 -2-methyl-3-ethylindenyl)silanetitanium 
(IV) dibenzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethyl-indenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl. 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2-methyl-3ethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-methyl-3-ethyl-indenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethyl-indenyl)silane-titanium (II) 1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silane-titanium (II) 1,3-pentadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silane-titanium (III) 
2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4.6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino)benzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) benzyl 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2-methyl-3-ethylindenyl)silanetitanium (IV) dibenzyl, 
2,3,4,6-tetramethylindenyl complexes: 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 
2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)-silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV)dibenzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl. 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6,-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(1-admantylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)-silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)-silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silane-titanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silane-titanium (II) 1,3-pentadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)-silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silane-titanium (IV) dimethyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silane-titanium (IV) dibenzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)-silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)diisopropoxy(-2,3,4,6-tetramethylindenyl)silanetitanium 
(III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(1-admantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium(IV) dimethyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene. 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-Butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,5-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dimethyl, and 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6-tetramethylindenyl)silanetitanium (IV) dibenzyl. 
2,3,4,6,7-pentamethylindenyl complexes: 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(t-butylamido)dimethyl(.eta..sup.5 
2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)-silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(cyclodecylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclodecylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene. 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(1-adamantylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)dimethyl).eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)-silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)-silanetitanium (III) 
2-(N,N-dimethylamino)benzyl. 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(t-butylamido)dimethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silane-titanium (II) 
1,4-diphenyl-1,3-butadiene. 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silane-titanium (II) 1,3-pentadiene, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)-silanetitanium (III) 
2-(N,N-dimethylamino)benzyl. 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silane-titanium (IV) dimethyl, 
(n-butylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silane-titanium (IV) dibenzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)-silanetitanium (II) 
1,4-diphenyl-1,3,-butadiene. 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)diisopropoxy(-2,3,4,6,7-pentamethylindenyl)silanetitaniu 
m (III) 2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-3,4-butadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)diisopropoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamino)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(cyclododecylamino)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido))dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(2,4,6-trimethylanilido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(1-adamantylamido)dimethoxy(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silanetanium (II) 
1,4-diphenyl-1,3-butadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(n-butylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 
2-(N,N-dimethylamino)benzyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, 
(cyclododecylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV)dimethyl, 
(2,4,6-trimethylanilido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethyl-indenyl)silanetitanium (II) 
1,4-diphenyl-1,3-butadiene, 
(1adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (II) 1,3-pentadiene, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (III) 2-(N,N-dimethylamino) 
benzyl, 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dimethyl, and 
(1-adamantylamido)ethoxymethyl(.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)silanetitanium (IV) dibenzyl, 
The complexes can be prepared by use of well known synthetic techniques. 
Optionally a reducing agent can be employed to produce the tower oxidation 
state complexes. Such a process is disclosed in U.S. Ser. No. 8/241,523, 
filed May 13, 1994, published as WO95-00526. The reactions are conducted 
in a suitable noninterfering solvent at a temperature from -100 to 
300.degree. C., preferably from -78 to 100.degree. C., most preferably 
from 0 to 50.degree. C. By the term "reducing agent" herein is meant a 
metal or compound which, under reducing conditions causes the metal M, to 
be reduced from a higher to a lower oxidation state. Examples of suitable 
metal reducing agents are alkali metals, alkaline earth metals, aluminum 
and zinc, alloys of alkali metals or alkaline earth metals such as 
sodium/mercury amalgam and sodium/potassium alloy. Examples of suitable 
reducing agent compounds are sodium naphthalenide, potassium graphite, 
lithium alkyls, lithium or potassium alkadienyls; and Grignard reagents. 
Most preferred reducing agents are the alkali metals or alkaline earth 
metals, especially lithium and magnesium metal. 
Suitable reaction media for the formation of the complexes include 
aliphatic and aromatic hydrocarbons, ethers, and cyclic ethers, 
particularly branched-chain hydrocarbons such as isobutane, butane, 
pentane, hexane, heptane, octane, and mixtures thereof; cyclic and 
alicyclic hydrocarbons such as cyclohexane, cycloheptane, 
methylcyclohexane, methylcycloheptane, and mixtures thereof; aromatic and 
hydrocarbyl-substituted aromatic compounds such as benzene, toluene, and 
xylene C.sub.1-4 dialkyl ethers C.sub.1-4 dialkyl ether derivatives of 
(poly)alkylene glycols, and tetrahydrofuran. Mixtures of the foregoing are 
also suitable. 
The complexes are rendered catalytically active by combination with an 
activating cocatalyst or by use of an activating technique. Suitable 
activating cocatalysts for use here in include polymeric or oligomeric 
alumoxanes, especially methylalumoxane, triisobutyl aluminum modified 
methylalumoxane, isobutyalumoxane; neutral Lewis acids, such as C.sub.1-30 
hydrocarbyl substituted Group 13 compounds, especially 
tri(hydrocarbyl)aluminum- or tri(hydrocarbyl)boron compounds and 
halogenated (including perhalogenated) derivatives thereof, having from 1 
to 10 carbons in each hydrocarbyl or halogenated hydrocarbyl group, more 
especially perfluorinated tri(aryl)boron compounds, and most especially 
tris(pentafluorophenyl)borane; nonpolymeric, compatible, noncoordinating, 
ion forming compounds (including the use of such compounds under oxidizing 
conditions), especially the use of ammonium-, phosphonium-, oxonium-, 
carbonium-, silylium- or sulfonium- salts of compatible, noncoordinating 
anions, or ferrocenium salts of compatible, noncoordinating anions; bulk 
electrolysis (explained in more detail hereinafter); and combinations of 
the foregoing activating cocatalysts and techniques. The foregoing 
activating cocatalysts and activating techniques have been previously 
taught with respect to different metal complexes in the following 
references: EP-A-277,003, U.S. Pat. No. 5,153,157, U.S. Pat. No. 
5,5064,802, EP-A-468,651 (equivalent to U.S. Ser. No. 07/547,718), 
EP-A-520,732 (equivalent to U.S. Ser. No. 07/876,268), and EP-A-520,732 
(equivalent to U.S. Ser. Nos. 07/884,966 filed May 1, 1992). 
Combinations of neutral Lewis acids, especially the combination of a 
trialkyl aluminum compound having from 1 to 4 carbons in each alkyl groups 
and a halogenated tri(hydrocarbyl)boron compound having from 1 to 20 
carbons in each alkyl hydrocarbyl group, especially 
tris(pentafluorophenyl)borane, further combinations of such neutral Lewis 
acid mixtures with a polymeric or oligomeric alumnoxane, and combinations 
of a single neutral Lewis acid, especially tris(pentafluorophenyl)borane 
with a polymeric or oligomeric alumoxane are especially desirable 
activating cocatalysts. A benefit according to the present invention is 
the discovery that the most efficient catalyst activation using such a 
combination of tris(pentafluorophenol)borane/alumoxane mixture occurs at 
reduced levels of alumoxane. Preferred molar ratios of Group 4 metal 
complex:tris(pentafluoro-phenylborane:alumoxane are from 1:1:1 to 1:5:5, 
more preferably from 1:1:1.5 to 1:5:3. The surprising efficient use of 
lower levels of alumoxane with the present invention allows for the 
production of olefin polymers with high catalytic efficiencies using less 
of the expensive alumoxane cocatalyst. Additionally, polymers with lower 
levels of aluminum residue, and hence greater clarity, are obtained. 
Suitable ion forming compounds useful as cocatalysts in one embodiment of 
the present invention comprise a cation which is a Bronsted acid capable 
of donating a proton, and a compatible, noncoordinating anion, A.sup.-, As 
used herein, the term "noncoordinating" means an anion or substance which 
either does not coordinate to the Group 4 metal containing precursor 
complex and the catalytic derivative derived therefrom, or which is only 
weakly coordinated to such complexes thereby remaining sufficiently labile 
to be displaced by a neutral Lewis base. A noncoordinating anion 
specifically refers to an anion which when functioning as a charge 
balancing anion in a cationic metal complex does not transfer an anionic 
substituent or fragment thereof to said cation thereby forming neutral 
complexes. "Compatible anions" are anions which are not degraded to 
neutrality when the initially formed complex decomposes and are 
noninterfering with desired subsequent polymerization or other uses of the 
complex. 
Preferred anions are those containing a single coordination complex 
comprising a charge-bearing metal or metalloid core which anion is capable 
of balancing the charge of the active catalyst species (the metal cation) 
which may be formed when the two components are combined. Also, said anion 
should be sufficiently labile to be displaced by olefinic, diolefinic and 
acetylenically unsaturated compounds or other neutral Lewis bases such as 
ethers or nitriles. Suitable metals include, but are not limited to, 
aluminum, gold and platinum. Suitable metalloids include, but are not 
limited to, boron, phosphorus, and silicon. Compounds containing anions 
which comprise coordination complexes containing a single metal or 
metalloid atom are, of course, well known and many, particularly such 
compounds containing a single boron atom in the anion portion, are 
available commercially. 
Preferably such cocatalysts may be represented by the following general 
formula: (L*--H).sub.d.sup.+ (A).sup.d- 
wherein: 
L* is a neutral Lewis base; 
(L*--H)+ is a Bronsted acid; 
A.sub.d- is a noncoordinating, compatible anion having a charge of d-, and 
d is an integer from 1 to 3. 
More preferably A.sup.d- corresponds to the formula:[M'Q.sub.4 ].sup.- ; 
wherein: 
M' is boron or aluminum in the +3 formal oxidation state; and 
Q independently each occurrence is selected from hydride, dialkylamido, 
halide, hydrocarbyl, hydrocarbyloxide, halosubstituted-hydrocarbyl, 
halosubstituted hydrocarbyloxy, and halo- substituted silylhydrocarbyl 
radicals (including perhalogenated hydrocarbyl-perhalogenated 
hydrocarbyloxy- and perhalogenated silyhydrocarbyl radicals), said Q 
having up to 20 carbons with the proviso that in not more than one 
occurrence is Q halid. Examples of suitable hydrocarbyloxide Q groups are 
disclosed in U.S. Pat. No. 5,296,433. 
In a more preferred embodiment, d is one, that is, the counter ion has a 
single negative charge and is A.sup.-. Activating cocatalysts comprising 
boron which are particularly useful in the preparation of catalysts of 
this invention may be represented by the following general formula: 
(L*--H).sup.+ (BQ.sub.4): 
wherein: 
L* is as previously defined; 
B is boron in a formal oxidation state of 3; and 
Q is a hydrocarbyl, hydrocarbyloxy-, fluorinated hydrocarbyl-, fluorinated 
hydrocarbyloxy-, or fluorinated silylhydrocarbyl- group of up to 20 
nonhydrogen atoms, with the proviso that in not more than one occasion is 
Q hydrocarbyl. 
Most preferably, Q is each occurrence a fluorinated aryl group, especially, 
a pentafluorophenyl group. 
Illustrative, but not limiting, examples of boron compounds which may be 
used as an activating cocatalyst in the preparation of the improved 
catalysts of this invention are tri-substituted ammonium salts such as: 
trimethylammonium tetrakis(pentafluorophenyl)borate, 
triethylammonium tetrakis(pentafluorophenyl)borate, 
tripropylammonium tetrakis(pentafluorophenyl)borate, 
tri(n-butyl)ammonium tetrakis(pentafluorophenyl) borate, 
tri(sec-butyl)ammonium tetrakis(pentafluoropheny)borate, 
N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate, 
N,N-dimethylanilinium n-butyltris(pentafluorophenyl) borate, 
N,N-dimethylanilinium benzyltris(pentafluorophenyl) borate, 
N,N-dimethylanilinium 
tetrakis(4-(t-butyldimethylsilyl)-2,3,5,6-tetrafluorphenyl) borate, 
N,N-dimethylanilinium 
tetrakis(4-triisopropylsilyl)-2,3,5,6-tetrafluorophenyl) borate, 
N,N-dimethylanilinium pentafluorophenoxytris(pentafluorophenyl) borate, 
N,N-diethylanilinium tetrakis(pentafluorophenyl) borate, 
N,N-dimethyl-2,4,6-trimethylanilinium tetrakis(pentafluorophenyl) borate, 
trimethylammonium tetrakis(2,3,4,6-tetrafluorophenyl)borate, 
triethylammonium tetrakis(2,3,4,6-tetrafluorophenyl) borate, 
tripropylammonium tetrakis(2,3,4,6-tetrafluorophenyl) borate, 
tri(n-butyl)ammonium tetrakis(2,3,4,6-tetrafluorophenyl) borate, 
dimethyl(t-butyl)ammonium tetrakis(2,3,4,6-tetrafluorophenyl) borate, 
N,N-dimethylanilinium tetrakis(2,3,4,6-tetrafluorophenyl) borate, 
N,N-diethylanilinium tetrakis(2,3,4,6-tetrafluorophenyl) borate, and 
N,N-dimethyl-2,4,6-trimethylanilinium tetrakis(2,3,4,6-tetrafluorophenyl) 
borate; 
dialkyl ammonium salts such as: 
di-(i-propyl)ammonium tetrakis(pentafluorophenyl) borate, and 
dicyclohexylammonium tetrakis(pentafluorophenyl) borate; 
tri-substituted phosphonium salts such as: 
triphenylphosphonium tetrakis(pentafluorophenyl) borate, 
tri(o-tolyl)phosphonium tetrakis(pentafluorophenyl) borate, and 
tri(2,6-dimethylphenyl)phosphonium tetrakis(pentafluorophenyl) borate; 
di-substituted oxonium salts such as: 
diphenyloxonium tetrakis(pentafluorophenyl) borate, 
di(o-tolyl)oxonium tetrakis(pentafluorophenyl) borate, and 
di(2,6-dimethylphenyl)oxonium tetrakis(pentafluorophenyl) borate; 
di-substituted sulfonium salts such as: 
diphenylsulfonium tetrakis(pentafluorophenyl) borate, 
di(o-tolyl)sulfonium tetrakis(pentafluorophenyl) borate, and 
bis(2,6-dimethylphenyl)sulfonium tetrakis(pentafluorophenyl) borate. 
Preferred (L*--H).sup.+ cations are N,N-dimethylanilinium and 
tributylammonium. 
Another suitable ion forming, activating cocatalyst comprises a salt of a 
cationic oxidizing agent and a noncoordinating, compatible anion 
represented by the formula: 
EQU (Ox.sup.e+).sub.d (A.sup.d-).sub.e+ 
wherein: 
Ox.sup.e+ is a cationic oxidizing agent having a charge of e+; 
e is an integer from 1 to 3; and 
A.sup.d- and d are as previously defined. 
Examples of cationic oxidizing agents include: ferrocenium, 
hydrocarbyl-substituted ferrocenium, Ag.sup.- or Pb.sup.+2. Preferred 
embodiments of A.sup.d- are those anions previously defined with respect 
to the bronsted acid containing activating cocatalysts, especially 
tetrakis(pentafluorophenyl)borate. 
Another suitable ion forming, activating cocatalyst comprises a compound 
which is a salt of a carbenium ion and a noncoordinating, compatible anion 
represented by the formula: 
EQU C.sup.+ A.sup.- 
wherein: 
C.sup.+ is a C.sub.1-20 carbenium ion; and 
A.sup.- is as previously defined. A preferred carbenium ion is the trityl 
cation, that is triphenylmethylium. 
A further suitable ion forming, activating cocatalyst comprises a compound 
which is a salt of a silylium ion and a noncoordinating, compatible anion 
represented by the formula: 
EQU R.sub.3 Si(X').sub.q.sup.+ A.sup.- 
wherein: 
R is C.sub.1-10 hydrocarbyl, and X', q and A.sup.- are as previously 
defined. 
Preferred silylium salt activating cocatalysts are trimethylsilylium 
tetrakispentafluorophenylborate, triethylsilylium 
tetrakispentafluorophenylborate and ether substituted adducts thereof. 
Silylium salts have been previously generically disclosed in J. Chem Soc. 
Chem. Comm., 1993, 383-384, as well as Lambert, J. B., et at., 
Organometallics, 1994, 13, 2430-2443. The use of the above silylium salts 
as activating cocatalysts for addition polymerization catalysts is claimed 
in United States Patent Application entitled. Silylium Cationic 
Polymerization Activators For Metallocene Complexes, filed in the names of 
David Neithamer, David Devore, Robert LaPointe and Robert Mussell on Sep. 
12, 1994. 
Certain complexes of alcohols, mercaptans, silanols, and oximes with 
tris(pentafluorophenyl)borane are also effective catalyst activators and 
may be used according to the present invention. Such cocatalysts are 
disclosed in U.S. Pat. No. 5,296,433. 
The technique of bulk electrolysis involves the electrochemical oxidation 
of the metal complex under electrolysis conditions in the presence of a 
supporting electrolyte comprising a noncoordinating, inert anion. In the 
technique, solvents, supporting electrolytes and electrolytic potentials 
for the electrolysis are used such that electrolysis byproducts that would 
render the metal complex catalytically inactive are not substantially 
formed during the reaction. More particularly, suitable solvents are 
materials that are: liquids under the conditions of the electrolysis 
(generally temperatures from 0 to 100.degree. C.), capable of dissolving 
the supporting electrolyte, and inert. "Inert solvents" are those that are 
not reduced or oxidized under the reaction conditions employed for the 
electrolysis. It is generally possible in view of the desired electrolysis 
reaction to choose a solvent and a supporting electrolyte that are 
unaffected by the electrical potential used for the desired electrolysis. 
Preferred solvents include difluorobenzene (all isomers), dimethoxyethane 
(DME), and mixtures thereof. 
The electrolysis may be conducted in a standard electrolytic cell 
containing an anode and cathode (also referred to as the working electrode 
and counter electrode respectively). Suitable materials of construction 
for the cell are glass, plastic, ceramic and glass coated metal. The 
electrodes are prepared from inert conductive materials, by which are 
meant conductive materials that are unaffected by the reaction mixture or 
reaction conditions. Platinum or palladium are preferred inert conductive 
materials. Normally an ion permeable membrane such as a fine glass frit 
separates the cell into separate compartments, the working electrode 
compartment and counter electrode compartment. The working electrode is 
immersed in a reaction medium comprising the metal complex to be 
activated, solvent, supporting electrolyte, and any other materials 
desired for moderating the electrolysis or stabilizing the resulting 
complex. The counter electrode is immersed in a mixture of the solvent and 
supporting electrolyte. The desired voltage may be determined by 
theoretical calculations or experimentally by sweeping the cell using a 
reference electrode such as a silver electrode immersed in the cell 
electrolyte. The background cell current, the current draw in the absence 
of the desired electrolysis, is also determined. The electrolysis is 
completed when the current drops from the desired level to the background 
level. In this manner, complete conversion of the initial metal complex 
can be easily detected. 
Suitable supporting electrolytes are salts comprising a cation and a 
compatible, noncoordinating anion, A-. Preferred supporting electrolytes 
are salts corresponding to the formula G.sup.+ A.sup.- : wherein: 
G.sup.+ is a cation which is nonreactive towards the starting and 
resulting complex, and 
A.sup.- is as previously defined. 
Examples of cations, G.sup.+, include tetrahydrocarbyl substituted ammonium 
or phosphonium cations having up to 40 nonhydrogen atoms. Preferred 
cations are the tetra(n-butylammonium)- and tetraethylammonium- cations. 
During activation of the complexes of the present invention by bulk 
electrolysis the cation of the supporting electrolyte passes to the 
counter electrode and A- migrates to the working electrode to become the 
anion of the resulting oxidized product. Either the solvent or the cation 
of the supporting electrolyte is reduced at the counter electrode in equal 
molar quantity with the amount of oxidized metal complex formed at the 
working electrode. Preferred supporting electrolytes are 
tetrahydrocarbylammonium salts of tetrakis(perfluoroaryl)borates having 
from 1 to 10 carbons in each hydrocarbyl or perfluoroaryl group, 
especially tetra(n-butylammonium)tetrakis(pentafluorophenyl)borate. 
A further recently discovered electrochemical technique for generation of 
activating cocatalysts is the electrolysis of a disilane compound in the 
presence of a source of a noncoordinating compatible anion. This technique 
is more fully disclosed and claimed in the previously mentioned United 
States Patent application entitled, "Silylium Cationic Polymerization 
Activators For Metallocene Complexes", filed on Sep. 12, 1994. 
The foregoing electrochemical activating technique and activating 
cocatalysts may also be used in combination. An especially preferred 
combination is a mixture of a tri(hydrocarbyl)aluminum or 
tri(hydrocarbyl)borane compound having from 1 to 4 carbons in each 
hydrocarbyl group with an oligomeric or polymeric alumoxane compound. 
The molar ratio of catalyst/cocatalyst employed preferably ranges from 
1:10,000 to 100:1, more preferably from 1:5000 to 10:1, most preferably 
from 1:1000 to 1:1. Alumonxane, when used by itself as an activating 
cocatalyst, is employed in large quantity, generally at least 100 times 
the quantity of metal complex on a molar basis. 
Tris(pentafluorophenyl)borane, where used as an activating cocatalyst is 
employed in a molar ratio to the metal complex of form 0.5:1 to 10:1, more 
preferably from 1:1 to 6:1 most preferably from 1:1 to 5:1. The remaining 
activating cocatalysts are generally employed in approximately equimolar 
quantity with the metal complex. 
The process may be used to polymerize ethylenically unsaturated monomers 
having from 3 to 20 carbon atoms either alone or in combination. Preferred 
monomers include monovinylidene aromatic monomers, 4-vinylcyclohexene, 
vinylcyclohexane, norbornadiene and C.sub.3-10 aliphatic .alpha.-olefins 
(especially ethylene, propylene, isobutylene, 1-butene, 1-hexene, 
3-methyl-1-pentene, 4-methyl-1-pentene, and 1-octene), C.sub.4-40 dienes, 
and mixtures thereof. Most preferred monomers are ethylene, and mixtures 
of ethylene, propylene and a nonconjugated diene, especially 
ethylidenenorbornene. 
In general, the polymerization may be accomplished at conditions well known 
in the prior art for Ziegler-Natta or Kaminsky-Sinn type polymerization 
reactions, that is, temperatures from 0-250.degree. C., preferably 30 to 
200.degree. C. and pressures from atmospheric to 10,000 atmospheres. 
Suspension, solution, slurry, gas phase, solid state powder polymerization 
or other process condition may be employed if desired. A support, 
especially silica, alumina, or a polymer (especially 
poly(tetrafluoroethylene) or a polyolefin) may be employed, and desirably 
is employed when the catalysts are used in a gas phase polymerization 
process. The support is preferably employed in an amount to provide a 
weight ratio of catalyst (based on metal):support from 1:100,000 to 1:10, 
more preferably from 1:50,000 to 1:20, and most preferably from 1:10,000 
to 1:30. 
In most polymerization reactions the molar ratio of catalyst:polymerizable 
compounds employed is from 10.sup.-12 :1 to 10.sup.-1 :1, more preferably 
from 10.sup.-9 :1 to 10.sup.-5 :1. 
Suitable solvents for polymerization are inert liquids. Examples include 
straight and branched-chain hydrocarbons such as isobutane, butane, 
pentane, hexane, heptane, octane, and mixtures thereof; cyclic and 
alicyclic hydrocarbons such as cyclohexane, cycloheptane, 
methylcyclohexane, methylcycloheptane, and mixtures thereof; 
perfluorinated hydrocarbons such as perfluorinated C.sub.4-10 alkanes, and 
the like and aromatic and alkyl-substituted aromatic compounds such as 
benzene, toluene, xylene, ethylbenzene and the like. Suitable solvents 
also include liquid olefins which may act as monomers or comonomers 
including ethylene, propylene, butadiene, cyclopentene, 1-hexene, 
1-hexane, 4-vinylcyclohexene, vinylcyclohexane, 3-methyl-1-pentene, 
4-methyl-1-pentene, 1,4-hexadiene, 1-octone, 1-decene, styrene, 
divinylbenzene, allylbenzene, vinyltoluene (including all isomers alone or 
in admixture), and the like. Mixtures of the foregoing are also suitable. 
The catalysts may be utilized in combination with at least one additional 
homogeneous or heterogeneous polymerization in separate reactors connected 
in series or in parallel to prepare polymer blends having desirable 
properties. An example of such a process is disclosed in WO 94/00500, 
equivalent to U.S. Ser. No. 07/904,770, as well as U.S. Ser. No. 08/10958, 
filed Jan. 29, 1993. 
Utilizing the catalysts of the present invention copolymers having high 
comonomer incorporation and correspondingly low density, yet having a low 
melt index may be readily prepared. That is, high molecular weight 
polymers are readily attained by use of the present catalysts even at 
elevated reactor temperatures. This result is highly desirable because the 
molecular weight of .alpha.-olefin copolymers can be readily reduced by 
the use of hydrogen or similar chain transfer agent, however increasing 
the molecular weight of .alpha.-olefin copolymers is usually only 
attainable by reducing the polymerization temperature of the reactor. 
Disadvantageously, operation of a polymerization reactor at reduced 
temperatures significantly increases the cost of operation since heat must 
be removed from the reactor to maintain the reduced reaction temperature, 
while at the same time heat must be added to the reactor effluent to 
vaporize the solvent. In addition, productivity is increased due to 
improved polymer solubility, decreased solution viscosity, and a higher 
polymer concentration. Utilizing the present catalysts. .alpha.-olefin 
homopolymers and copolymers having densities from 0.85 g/cm.sup.3 to 0.96 
g/cm.sup.3, and melt flow rates from 0.001 to 10.0 dg/min are readily 
attained in a high temperature process. 
The catalysts of the present invention are particularly advantageous for 
the production of ethylene homopolymers and ethylene/.alpha.-olefin 
copolymers having high levels of long chain branching. The use of the 
catalysts of the present invention in continuous polymerization processes, 
especially continuous, solution polymerization processes, allows for 
elevated reactor temperatures which favor the formation of vinyl 
terminated polymer chains that may be incorporated into a growing polymer, 
thereby giving a long chain branch. The use of the present catalysts 
system advantageously allows for the economical production of 
ethylene/.alpha.-olefin copolymers having processability similar to high 
pressure, free radical produced low density polyethylene. 
The present catalysts system may be advantageously employed to prepare 
olefin polymers having improved processing properties by polymerizing 
ethylene alone or ethylene/.alpha.-olefin mixtures with low levels of a 
"H" branch inducing diene, such as norbornadiene, 1,7-octadiene, or 
1,9-decadiene. The unique combination of elevated reactor temperatures, 
high molecular weight (or low melt indices) at high reactor temperatures 
and high comonomer reactivity advantageously allows for the economical 
production of polymers having excellent physical properties and 
processability. Preferably such polymers comprise ethylene, a C3-20 
.alpha.-olefin and a "H"-branching comonomer. Preferably, such polymers 
are produced in a solution process, most preferably a continuous solution 
process. 
As previously mentioned, the present catalyst system is particularly useful 
in the preparation of EP and EPDM copolymers in high yield and 
productivity. The process employed may be either a solution or slurry 
process both of which are previously known in the art. Kaminsky, J. Poly. 
Sci., Vol. 23, pp. 2151-64 (1985(reported the use of a soluble 
bis(cyclopentadienyl)zirconium dimethyl-alumoxane catalyst system for 
solution polymerization of EP and EPDM elastomers. U.S. Pat. No. 5,229,478 
disclosed a slurry polymerization process utilizing similar 
bis(cyclopentadienyl)zirconium based catalyst systems. 
In general terms, it is desirable to produce such EP and EPDM elastomers 
under conditions of increased reactivity of the diene monomer component. 
The reason for this was explained in the above identified '478 patent in 
the following manner, which still remains true despite the advances 
attained in such reference. A major factor affecting production costs and 
hence the utility of an EPDM is the diene monomer cost. The diene is a 
more expensive monomer material than ethylene or propylene. Further, the 
reactivity of diene monomers with previously known metallocene catalysts 
is lower than that of ethylene and propylene. Consequently, to achieve the 
requisite degree of diene incorporation to produce an EPDM with an 
acceptably fast cure rate, it has been necessary to use a diene monomer 
concentration which, expressed as a percentage of the total concentration 
of monomers present, is in substantial excess compared to the percentage 
of diene desired to be incorporated into the final EPDM product. Since 
substantial amounts of unreacted diene monomer must be recovered from the 
polymerization reactor effluent for recycle the cost of production is 
increased unnecessarily. 
Further adding to the cost of producing an EPDM is the fact that, 
generally, the exposure of an olefin polymerization catalyst to a diene, 
especially the high concentrations of diene monomer required to produce 
the requisite level of diene incorporation in the final EPDM product, 
often reduces the rate or activity at which the catalyst will cause 
polymerization of ethylene and propylene monomers to proceed. 
Correspondingly, lower throughputs and longer reaction times have been 
required, compared to the production of an ethylene-propylene copolymer 
elastomer or other .alpha.-olefin copolymer elastomer. 
The present catalyst system advantageously allows for increased diene 
reactivity thereby preparing EPDM polymers in high yield and productivity. 
Additionally, the catalyst system of the present invention achieves the 
economical production of EPDM polymers with diene contents of up to 20 
weight percent or higher, which polymers possess highly desirable fast 
cure rates. 
The non-conjugated diene monomer can be a straight chain, branched chain or 
cyclic hydrocarbon diene having from 6 to 15 carbon atoms. Examples of 
suitable non-conjugated dienes are straight chain acyclic dienes such as 
1,4-hexadiene and 1,6-octadiene; branched chain acyclic dienes such as 
5-methyl-1,4-hexadiene; 3,7-dimethyl-1,6-octadiene; 
3,7-dimethyl-1,7-octadiene and mixed isomers of dihydromyricene and 
dihydroocinene; single ring alicyclic dienes such as 1,3-cyclopentadiene; 
1,4-cyclohexadiene; 1,5-cyclooctadiene and 1,5-cyclododecadiene; and 
multi-ring alicyclic fused and bridged ring dienes such as 
tetrahydroindene, methyl tetrahydroindene, dicyclopentadiene; 
bicyclo-(2,2,1)-hepta-2,5-diene; alkenyl, alkylidene, cycloalkenyl and 
cycloalklidene norbornenes such as 5-methylene-2-norbornene (MNB); 
5-propenyl-2-norbornene, 
5-isopropylidene-2-norbornene,5-(4-cyclopentenyl)-2-norbornene,5-cyclohexy 
lidene-2-norbornene, 5-vinyl-2-norbornene and norbornadiene. 
Of the dienes typically used to prepare EPDMs, the particularly preferred 
dienes are 1,4-hexadiene (HD), 5-ethylidene-2-norbornene (ENB), 
5-vinylidene-2-norbornene (VNB), 5-methylene-2-norbornene (MNB), and 
dicyclopentadiene (DCPD). The especially preferred dienes are 
5-ethylidene-2-norbornene (ENB) and 1,4-hexadiene (HD). 
The preferred EPDM elastomers may contain 20 up to 90 weight percent 
ethylene, more preferably 30 to 85 weight percent ethylene, most 
preferably 35 to 80 weight percent ethylene. 
The alpha-olefins suitable for use in the preparation of elastomers with 
ethylene and dienes are preferably C.sub.3-16 alpha-olefins, illustrative 
non-limiting examples of such alpha-olefins are propylene, 1-butene, 
1-pentene, 1-hexene, 1-octene, 1-decene, and 1-dodecene. The alpha-olefin 
is generally incorporated into the EPDM polymer at 10 to 80 weight 
percent, more preferably at 20 to 65 weight percent. The non-conjugated 
dienes are generally incorporated into the EPDM at 0.5 to 20 weight 
percent; more, preferably at 1 to 15 weight percent, and most preferably 
at 3 to 12 weight percent. If desired, more than one diene may be 
incorporated simultaneously, for example HD and ENB, with total diene 
incorporation within the limits specified above. 
The catalyst system may be prepared as a homogeneous catalyst by addition 
of the requisite components to a solvent in which polymerization will be 
carried out by solution polymerization procedures. The catalyst system may 
also be prepared and employed as a heterogeneous catalyst by adsorbing the 
requisite components on a catalyst support material such as silica gel, 
alumina or other suitable inorganic support material. When prepared in 
heterogeneous or supported form, it is preferred to use silica as the 
support material. The heterogeneous form of the catalyst system is 
employed in a slurry polymerization. As a practical limitation, slurry 
polymerization takes place in liquid diluents in which the polymer product 
is substantially insoluble. Preferably, the diluent for slurry 
polymerization is one or more hydrocarbons with less than 5 carbon atoms. 
If desired, saturated hydrocarbons such as ethane, propane or butane may 
be used in whole or part as the diluent. Likewise the .alpha.-olefin 
monomer or a mixture of different .alpha.-olefin monomers may be used in 
whole or part as the diluent. Most preferably the diluent comprises in at 
least major part the .alpha.-olefin monomer or monomers to be polymerized. 
In contrast, solution polymerization conditions utilize a solvent for the 
respective components of the reaction, particularly the EP or EPDM 
polymer. Preferred solvents include mineral oils and the various 
hydrocarbons which are liquid at reaction temperatures. Illustrative 
examples of useful solvents include alkanes such as pentane, iso-pentane, 
hexane, heptane, octane and nonane, as well as mixtures of alkanes 
including kerosene and Isopar E.TM., available from Exxon Chemicals Inc.; 
cycloalkanes such as cyclopentane and cyclohexane; and aromatics such as 
benzene, toluene, xylenes, ethylbenzene and diethylbenzene. 
At all times, the individual ingredients as well as the recovered catalyst 
components must be protected from oxygen and moisture. Therefore, the 
catalyst components and catalysts must be prepared and recovered in an 
oxygen and moisture free atmosphere. Preferably, therefore, the reactions 
are performed in the presence of an dry, inert gas such as, for example, 
nitrogen. 
Ethylene is added to the reaction vessel in an amount to maintain a 
differential pressure in excess of the combined vapor pressure of the 
.alpha.-olefin and diene monomers. The ethylene content of the polymer is 
determined by the ratio of ethylene differential pressure to the total 
reactor pressure. Generally the polymerization process is carried out with 
a differential pressure of ethylene of from 10 to 1000 psi (70 to 7000 
kPa), most preferably from 40 to 400 psi (30 to 300 kPa). The 
polymerization is generally conducted at a temperature of from 25 to 
200.degree. C., preferably from 75 to 170.degree. C., and most preferably 
from greater than 95 to 140.degree. C. 
The polymerization may be carried out as a batchwise or a continuous 
polymerization process A continuous process is preferred, in which event 
catalyst, ethylene, .alpha.-olefin, and optionally solvent and diene are 
continuously supplied to the reaction zone and polymer product 
continuously removed therefrom. 
Without limiting in any way the scope of the invention, one means for 
carrying out such a polymerization process is as follows: In a 
stirred-tank reactor propylene monomer is introduced continuously together 
with solvent, diene monomer and ethylene monomer. The reactor contains a 
liquid phase composed substantially of ethylene, propylene and diene 
monomers together with any solvent or additional diluent. If desired, a 
small amount of a "H"-branch inducing diene such as norbornadiene, 
1,7-octadiene or 1,9=-decadiene may also be added. Catalyst and cocatalyst 
are continuously introduced in the reactor liquid phase. The reactor 
temperature and pressure may be controlled by adjusting the 
solvent/monomer ratio, the catalyst addition rate, as well as by cooling 
or heating coils, jackets or both. The polymerization rate is controlled 
by the rate of catalyst addition. The ethylene content of the polymer 
product is determined by the ratio of ethylene to propylene in the 
reactor, which is controlled by manipulating the respective feed rates of 
these components to the reactor. The polymer product molecular weight is 
controlled, optionally, by controlling other polymerization variables such 
as the temperature, monomer concentration, or by a stream of hydrogen 
introduced to the reactor, as is well known in the art. The reactor 
effluent is contacted with a catalyst kill agent such as water. The 
polymer solution is optionally heated, and the polymer product is 
recovered by flashing off gaseous ethylene and propylene as well as 
residual solvent or diluent at reduced pressure, and, if necessary, 
conducting further devolatilization in equipment such as a devolatilizing 
extruder. In a continuous process the mean residence time of the catalyst 
and polymer in the reactor generally is from 5 minutes to 8 hours, and 
preferably from 10 minutes to 6 hours. 
In a preferred manner of operation, the polymerization is conducted in a 
continuous solution polymerization system comprising two reactors 
connected in series or parallel. In one reactor a relatively high 
molecular weight product (Mw from 300,000 to 600,000, more preferably 
400,000 to 500,000) is formed while in the second reactor a product of a 
relatively low molecular weight (Mw 50,000 to 300,000) is formed. The 
final product is a blend of the two reactor effluents which are combined 
prior to devolatilization to result in a uniform blend of the two polymer 
products. Such a dual reactor process allows for the preparation of 
products having improved properties. In a preferred embodiment the 
reactors are connected in series, that is effluent from the first reactor 
is charged to the second reactor and fresh monomer, solvent and hydrogen 
is added to the second reactor. Reactor conditions are adjusted such that 
the weight ratio of polymer produced in the first reactor to that produced 
in the second reactor is from 20:80 to 80:20. In addition the temperature 
of the second reactor is controlled to produce the lower molecular weight 
product. This system beneficially allow for production of EPDM products 
having a large range of Mooney viscosities, as well as excellent strength 
and processability. Preferably the Mooney viscosity (ASTM D1646-94, 
ML1+4@125.degree. C.) of the resulting product is adjusted to fall in the 
range from 1 to 200, preferably from 5 to 150 m and most preferably from 
10 to 110.

EXAMPLES 
The skilled artisan will appreciate that the invention disclosed herein may 
be practiced in the absence of any component which has not been 
specifically disclosed. The following examples are provided as further 
illustration of the invention and are not to be construed as limiting. 
Unless stated to the contrary all parts and percentages are expressed on a 
weight basis. 
.sup.1 H and .sup.13 C NMR spectra were recorded on a Varian XL (300 MHz) 
spectrometer. Chemical shifts were determined relative to TMS or through 
the residual CHCl.sub.3 in CDCl.sub.3 or the residual C.sub.6 HD.sub.5 in 
C.sub.6 D.sub.6, relative to TMS. Tetrahydrofuran (THF), diethylether, 
toluene, and hexane were used following passage through double columns 
charged with activated alumina and alumina supported mixed metal oxide 
catalyst (Q-5.RTM. catalyst, available from Engelhard Corp.) The compounds 
n-BuLi, KH, all Grignard reagents, and 1,4-diphenyl-1,3-butadiene were all 
used as purchased from Aldrich Chemical Company. All syntheses were 
performed under dry nitrogen atmosphere using a combination of glove box 
and high vacuum techniques. 
Example 1 
Preparation of (2-methylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride 
Preparation of 2-Bromoindene 
To a 500 mL flask containing a magnetic stir bar was added 
(+/-)trans-2-bromo-1-indanol (50.0 g, 235 mmol), p-toluenesulfonic acid 
monohydrate (0.50 g, 2.6 mmol), and toluene (300 mL). A Dean Stark trap 
and reflux condenser were placed on the flask, and the reaction was 
refluxed for 16 hours. The reaction was transferred to a separatory 
funnel, chloroform was added (200 mL), and the resulting mixture was 
washed with aqueous sodium bicarbonate solution (3.times.200 mL). The 
organic layer was then washed with a saturated aqueous sodium chloride 
solution (1.times.300 mL), dried over anhydrous magnesium sulfate, and 
filtered. The solvents were removed and distillation provided 40.6 g (88.7 
percent) of the slightly yellow crystalline solid collected at 
72-105.degree. C. at 3 mm Hg. 
.sup.1 H NMR (300 MHz, CDCl.sub.3, TMS); .delta.7.4-7.1(m, 4H), 6.93(s, 
1H), 3.60(s, 2H). 
.sup.13 C NMR (75 MHz, CDCl.sub.3): .delta.143.62, 142.22, 132.64, 126.38, 
124.59, 124.49, 122.85, 119.88, 45.40. 
GC-MS: Calculated for C.sub.9 H.sub.7 .sup.79 Br 193.97, found 194.00. 
Calculated for C.sub.9 H.sub.7 .sup.81 Br 195.90, found 195.90. 
Preparation of 2-Methylindene via 2-Bromoindene 
2-Bromoindene (24.4 g, 0.125 moles) and Ni(dppp)Cl.sub.2 (0.925 g, 
1.71.times.10.sup.-3 moles) (dppp=1,3-bis(diphenyl-phosphino)propane) were 
stirred in diethylether (200 mL) at -78.degree. C. under a nitrogen 
atmosphere as methylMgBr (0.150 moles, 50.00 mL of 3.0 M solution in 
diethylether) was added. The dry-ice bath was then immediately removed and 
the reaction mixture allowed to warm to room temperature. The reaction 
mixture started off as a heterogeneous brick-red color and then turned to 
a homogeneous yellow/gold solution. After an hour of stirring in this 
state an exotherm occurred which resulted in some refluxing of the ether 
in the flask. The solution then turned back to the heterogeneous brick-red 
mixture. Total stirring time for the mixture was 3 hours following the 
removal of the ice-bath after which time GC analysis showed that the 
conversion of 2-bromoindene to 2-methylindene was substantially 
quantitative. After the reaction period the mixture was poured onto ice 
and then extracted with 1 M HCL (1.times.100 mL) and 1 M NaHCO.sub.3 
(1.times.100 mL) and then dried with MgSO.sub.4 and filtered. The desired 
product was isolated as a light yellow oil (14.0 g, 86.2 percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3); .delta.2.18 (s, 3H), 3.32 (s, 2H), 6.51 
(s, 1H), 7.08-7.40 (m, 4H). 
.sup.13 C NMR (75 MHZ, CDCl.sub.3); .delta.17.02, 42.90, 119.71, 123.30, 
123.49, 126.22, 127.16, 143.30, 145.90, 146.04. 
GC-MS: Calculated for C.sub.10 H.sub.10 130.19, found 130.00. 
Preparation of 2-Methylindene via 2-Methylindanone 
2-Methylindanone (20.0 g, 0.137 moles) and NaBH.sub.4 (5.175 g, 0.137 
moles) were mixed together and stirred in THF (200 mL). Anhydrous ethanol 
(100 mL) was then slowly added and the mixture allowed to stir for 16 
hours at room temperature. After the reaction period the mixture was 
quenched by the slow addition of 1 M HCl and then extracted using 
diethylether (3.times.100 mL). Removal of the solvent resulted in the 
isolation of a white solid which was then redissolved in diethylether (300 
mL) and stirred over cationic ion exchange beads (Dowex.TM. DR-2030 ion 
exchange beads, available from The Dow Chemical Company) for 48 hours 
while monitoring the reaction using a gas chromatograph. The mixture was 
then filtered and the volatiles removed resulting in the isolation of the 
desired product as a pale yellow oil (16.8 g, 94.3 percent). 
Preparation of Lithium-2-Methylindenide 
2-Methylindene (15.5 g, 0.114 moles) was stirred in diethylether (250 mL) 
as n-BuLi (0.120 moles, 60.0 mL of 2.0 M solution in cyclohexane) was 
added dropwise. The mixture was then allowed to stir for 3 hours at room 
temperature. After the reaction period the volatiles were removed and the 
solid washed well with hexane and collected via suction filtration as a 
light yellow powder which was used without further purification or 
analysis (15.1 g, 97.0 percent). 
Preparation of chloro(t-butylamino)dimethylsilane 
Me.sub.2 SiCl.sub.2 (151.50 g, 1.17 moles) was stirred in pentane (2 L) as 
N(C.sub.2 H.sub.5).sub.3 (119.62 g, 1.18 moles) was added slowly. 
t-Butylamine (85.85 g, 1.17 moles) in pentane (100 mL) was then added 
dropwise and the reaction allowed to stir at room temperature for 16 
hours. After the reaction period the mixture was filtered and concentrated 
to 600 mL at which time more salts began to precipitate. The mixture was 
then refiltered and concentrated to 250 mL and then transferred to a 250 
mL roundbottom flask equipped with a microdistillation apparatus and a 
thermometer. Distillation was performed until the reflux temperature 
reached 50.degree. C. The clear, colorless liquid remaining was then 
determined to be pure by NMR and the yield to be essentially quantitative. 
.sup.1 H NMR (300 MHZ, CDCl.sub.3); .delta.0.31 (s, 6H), 1.10 (s, 6H), 1.89 
(s, 1H). 
Preparation of (2-methylindenyl)(t-butylamino)dimethylsilane 
Chloro(t-butylamino)dimethylsilane (9.57 g, 0.058 moles) was stirred in 
diethylether (150 mL) at 0.degree. C. as lithium-2-methylindenide (7.68 g, 
0.058 moles) was added as a solid over a 15 minute period of time. The 
mixture was then allowed to stir for 16 hours at room temperature. After 
the reaction period the volatiles were removed and the residue extracted 
and filtered using hexane. Removal of the volatiles resulted in the 
isolation of the desired product as a pale yellow oil (9.99 g, 67.5 
percent). 
.sup.1 H NMR (300 MHZ, CDCl.sub.3, TMS): .delta.-0.089 (s, 3H), 0.12 (s, 
3H), 1.03 (s, 9H), 2.14 (s, 3H), 3.22 (s, 1H), 6.54 (s, 1H), 7.14-7.55 (m, 
4H). 
Preparation of Li.sub.2 
[(2-methylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 Et.sub.2 
O 
(2-methylindenyl)(t-butylamino)dimethylsilane (5.00 g, 0.0192 moles) was 
stirred in diethylether (60 mL) as n-BuLi (0.0405 moles, 16.2 mL of 2.5 M 
solution in hexane) was added slowly. This mixture was then allowed to 
stir for 16 hours. After the reaction period the volatiles were removed 
and the residue washed with hexane and then collected as a solid via 
filtration which was used without further purification or analysis (5.70 
g, 90.5 percent). 
Preparation of (2-methylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride with PbCl.sub.2 oxidation 
Li.sub.2 [(2-methylindenyl)(t-butylamido)dimethylsilane].circle-solid.3/4 
Et.sub.2 O (5.70 g, 0.0174 moles) was slowly added as a solid to a slurry 
of TiCl.sub.3 (THF).sub.3 (6.46 g, 0.0174 moles) in THF (80 mL). This 
mixture was allowed to stir for 45 minutes. PbCl.sub.2 (2.76 g, 0.00995 
moles) was then added to the mixture which was then allowed to stir for an 
additional 45 minutes. After the reaction period the volatiles were 
removed and the residue extracted and filtered using toluene. The toluene 
was then removed and the residue slurried in hexane and then collected as 
a red-brown crystalline solid by filtration. A second crop was obtained by 
concentrating and cooling the filtrate to -20.degree. C. for 16 hours 
followed by a second filtration. The crops were then combined and 
determined to be the desired product (4.88 g, 74.2 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.42 (s, 3H), 0.56 (s, 3H), 
1.34 (s, 3H), 2.14 (s, 9H), 6.71 (s, 1H), 6.92 (t, 1H), 7.04 (t, 1H), 7.25 
(d, 1H, 7.59 (d, 1H). 
Preparation of (2-methylindenyl)dimethyl(t-butylamido)titanium dichloride 
with methylene chloride oxidation 
Li.sub.2 
[(2-methylindenyl)(t-butylamido)dimethylsilane].circle-solid.Et.sub.2 O 
(2.00 g, 0.00612 moles) and TiCl.sub.3 (THF).sub.3 (2.32 g, 0.00612 moles) 
were combined as solids. THF (100 mL) was then added to the mixture which 
was then allowed to stir for 30 minutes. CH.sub.2 Cl.sub.2 (0.00306 moles) 
was then added and the mixture allowed to stir for an additional 2 hours. 
After the reaction period the volatiles were removed and the residue 
extracted and filtered using toluene through a Celite.TM. brand filter 
aid. The toluene was then removed and the residue washed with hexane 
resulting in the isolation of the desired product (0.900 g, 40 percent). 
Spectroscopic analysis was the same as described above. 
Preparation of (2-methylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride from TiCl.sub.4 
Li.sub.2 [(2-methylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 
Et.sub.2 O (2.00 g, 0.00612 moles) was dissolved in THF (10 mL) and 
stirred as TiCl.sub.4 (THF).sub.2 (2.043 g, 0.00612 moles) in THF (15 mL) 
was added slowly. This mixture was allowed to stir for 2 hours. After the 
reaction period the volatiles were removed and the residue extracted and 
filtered using toluene through a Celite.TM. pad. The toluene was then 
removed and the residue washed with hexane resulting in the isolation of 
the desired product (1.43 g, 62 percent). Spectroscopic analysis was the 
same as described above. 
Example 2 
Preparation of (2-methylindenyl)dimethyl(t-butylamido)silanetitanium 
dimethyl 
[(2-methylindenyl)dimethyl(t-butylamido)silane]TiCl.sub.2 (0.800 g, 0.00211 
moles) was stirred in diethylether (30 mL) as MeMgl (0.00454 moles, 1.50 
mL 3.00 M solution in diethylether) was added dropwise. This mixture was 
then allowed to stir for 30 minutes. After the reaction period the 
volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the volatiles resulted in the isolation of the desired 
product as a yellow solid (0.220 g, 30.8 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.11 (s, 3H), 0.46 (s, 
3H), 0.56 (s, 3H), 0.85 (s, 3H), 1.47 (s, 9H), 2.00 (s, 3H), 6.75 (s, 1H), 
6.88 (t, 1H), 7.06 (t, 1H), 7.42 (d, 1H), 7.50 (d, 1H). 
Example 3 
Preparation of (2-methylinedenyl)dimethyl(t-butylamido)silanetitanium (II) 
(1,4-diphenyl-1,3-butadiene) 
[(2-methylindenyl)dimethyl(t-butylamido)silane]TiCl.sub.2 (2.20 g, 0.00583 
moles) was slurried in hexane (150 mL) with 1,4-diphenyl-1,3-butadiene 
(1.20 g, 0.00583 moles) as n-BuLi (0.0117 moles, 4.67 mL of 2.5 M in 
hexane) was added slowly. This mixture was then refluxed for 2 hours. 
After the reaction period the mixture was cooled to room temperature and 
then filtered through Celite.TM.. Removal of the volatiles resulted in the 
isolation of the desired product as a red/brown powder (1.81 g, 60.6 
percent). 
.sup.1 H NMR (250 MHz, C.sub.6 D.sub.6, TMS): .delta.0.61 (s, 3H), 0.72 (s, 
3H), 1.25 (s, 9H), 1.78 (s, 3H), 3.35 (d, 1H), 3.70 (d, 1H), 3.85 (m, 1H), 
5.08 (m, 1H), 5.42 (s, 1H), 7.40-6.15 (m, 14H). 
Example 4 
Preparation of (3-methylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride 
Preparation of 3-Methylindene 
Lithium indenide (9.60 g, 0.0786 moles) in diethylether (100 mL) was added 
dropwise to a solution of dimethylsulfate (9.91 g, 0.0786 moles) in 
diethylether (125 mL) over a period of 15 minutes. After the addition was 
complete, H.sub.2 O (150 mL) was added to the reaction. The organic layer 
was then separated and washed with H.sub.2 O (2.times.100 mL). Drying over 
MgSO.sub.4 followed by filtration and solvent removal yielded the desired 
product as a yellow oil (9.68 g, 94.7 percent). 
.sup.1 H NMR (300 MHZ, CDCl.sub.3, TMS): .delta.1.20 (d, 3H), 3.90 (q, 1H), 
6.37 (dd, 1H), 6.68 (dd, 1H), 7.05-7.19 (m, 2H), 7.26 (d, 1H), 7.30 (d, 
1H). 
.sup.13 C NMR (75 MHz, CDCl.sub.3): .delta.15.94, 45.07, 120.96, 122.56, 
124.72, 126.35, 130.23, 141.27, 143.88, 149.16. 
Preparation of Lithium-1-Methylindenide 
3-Methylindene (9.68 g, 0.0745 moles) was stirred in hexane (300 mL) as 
nBuLi (0.0745 moles, 29.78 mL of 2.5 M solution in hexane) was added 
dropwise. The mixture was then allowed to stir for 48 hours at room 
temperature during which time a solid precipitated. After the reaction 
period the solid was collected via suction filtration as a light yellow 
powder which was used without further purification or analysis (9.38 g, 
92.5 percent). 
Preparation of (3-methylindenyl)(t-butylamine)dimethylsilane 
Chloro(t-butylamino)dimethylsilane (5.47 g, 0.033 moles) was stirred in THF 
(200 mL) as lithium-1-methylindenide (4.51 g, 0.033 moles) in THF (50 mL) 
was added dropwise. This mixture was allowed to stir for 16 hours at room 
temperature. After the reaction period the volatiles were removed and the 
residue extracted and filtered using hexane. Removal of the hexane 
resulted in the isolation of the desired product as a yellow oil (7.24 g, 
84.5 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.077 (s, 3H), -0.053 (s, 
3H), 1.05 (s, 9H), 2.15 (s, 3H), 3.41 (s, 1H), 6.31 (s, 1H), 7.14-7.64 (m, 
5H). 
Preparation of Li.sub.2 
[(3-methylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 Et.sub.2 
O 
(3-methylindenyl)(t-butylamino)dimethylsilane (7.24 g, 0.0279 moles) was 
stirred in diethylether (75 mL) as n-BuLi (0.0586 moles, 23.40 mL of 2.5 M 
solution in hexane) was added slowly. This mixture was then allowed to 
stir for 16 hours. After the reaction period the volatiles were removed 
and the residue washed with hexane and then collected as a solid via 
filtration which was used without further purification or analysis (7.01 
g, 76.9 percent). 
Preparation of (3-methylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride 
Li.sub.2 [(1-methylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 
Et.sub.2 O (7.01 g, 0.0214 moles) was slowly added as a solid to a slurry 
of TiCl.sub.3 (THF).sub.3 (7.94 g, 0.0214 moles) in THF (75 mL). This 
mixture was allowed to stir for 45 minutes. PbCl.sub.2 (2.98 g, 0.0107 
moles) was then added to the mixture which was then allowed to stir for an 
additional 45 minutes. After the reaction period the volatiles were 
removed and the residue extracted and filtered using toluene. The toluene 
was then removed and the residue slurried in hexane and then collected as 
a red-brown crystalline solid by filtration. A second crop was obtained by 
concentrating and cooling the filtrate followed by a second filtration. 
The crops were then combined and determined to be the desired product 
(4.67 g, 57.9 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.36 (s, 3H), 0.55 (s, 3H), 
1.32 (s, 9H), 2.37 (s, 3H), 6.08 (s, 1H), 6.97 (t, 1H), 7.11 (t, 1H), 7.27 
(d, 1H), 7.55 (d, 1H). 
Example 5 
Preparation of (3-methylindenyl)dimethyl(t-butylamido)silanetitanium 
dimethyl 
[(3-methylindenyl)dimethyl(t-butylamido)saline]TiCl.sub.2 (0.500 g, 0.00132 
moles) was stirred in diethylether (35 mL) as MeMgl (0.00292 moles, 1.00 
mL 3.0 M solution in diethylether) was added dropwise. This mixture was 
then allowed to stir for 35 minutes. After the reaction period the 
volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the volatiles followed by a repeat of the filtration 
again using hexane resulted in the isolation of the desired product as a 
yellow oil after the removal of the hexane (0.230 g, 51.3 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.16 (s, 3H), 0.38 (s, 
3H), 0.57 (s, 3H), 0.70 (s, 3H), 1.46 (s, 9H), 2.34 (s, 3H), 5.83 (s, 1H), 
6.91 (t, 1H), 7.11 (t, 1H), 7.46 (d, 1H). 
Example 6 
Preparation of (2,3-dimethylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride 
Preparation of 2,3-Dimethylindene 
To a stirred solution of 15.02 g (103 mmoles) of (+/-)-2-methyl-1-indanone 
in 200 mL of anhydrous diethyl ether at -78.degree. C. under an argon 
atmosphere was injected 50 mL of a 3.0 M methylMgl solution in ether (150 
mmoles MeMgl). The reaction was allowed to slowly warm to room temperature 
over three hours and then it was heated at 35.degree. C. for 1 hour. The 
reaction was poured into 1L of water, and concentrated HCl was slowly 
added until a pH of 1 was achieved. The mixture was transferred to a 
separatory funnel and shaken vigorously. The layers were separated, and 
the aqueous layer was extracted with ether. The combined organic layers 
were washed with water (1.times.500 mL), with aqueous NaHCO.sub.3 
(1.times.500 mL), and with saturated aqueous NaCl (1.times.500 mL). The 
organic layer was dried over anhydrous MgSO.sub.4 and filtered. GC showed 
that some alcohol was still present so the mixture was stirred with 
approximately 100 ml of 10 weight percent aqueous HCl for 1 hour. The 
mixture was transferred to a separatory funnel, and the layers were 
separated. The organic phase was washed with water (1.times.200 mL), with 
aqueous NaHCO.sub.3 (1.times.300 mL), and with saturated aqueous NaCl 
(1.times.250 mL). Drying over MgSO.sub.4 followed by filtration and 
solvent removal yielded 14.7 g (99 percent) of 1,2-Dimethylindene. 
.sup.1 H NMR (300 MHz, CDCl.sub.3, TMS); .delta.7.4-7.0 (m, 4H, aromatic), 
3.23 (s, 2H, allylic CH.sub.2), 2.04 (s, 3H, CH.sub.3), 2.01 (s, 3H, 
CH.sub.3). 
.sup.13 C NMR (75 MHz, CDCl.sub.3): .delta.147.1, 141.9, 137.3, 132.1, 
125.7, 123.3, 122.6, 117.6, 42.2, 13.6, 10.0. 
GC-MS: calculated for C.sub.11 H.sub.12 144.09, found 144.10. 
Preparation of Lithium-2,3-Dimethylindenide 
2,3-Dimethylindene (24.11 g, 0.1659 moles) was stirred in hexane (400 mL) 
as n-BuLi (0.20 moles, 80.0 mL of 2.5 M solution in hexane) was added 
dropwise. The mixture was then allowed to stir for 16 hours at room 
temperature during which time a solid precipitated. After the reaction 
period the solid was collected via suction filtration as a white powder 
which was used without further purification or analysis (20.64 g, 82.3 
percent). 
Preparation of (2,3-dimethylindenyl)(t-butylamine)dimethylsilane 
Chloro(t-butylamino)dimethylsilane (6.48 g, 0.039 moles) was stirred in THF 
(100 mL) as lithium-2,3-dimethylindenide (5.61 g, 0.037 moles) in THF (25 
mL) was added dropwise. This mixture was allowed to stir for 16 hours at 
room temperature. After the reaction period the volatiles were removed and 
the residue extracted and filtered using hexane. Removal of the hexane 
resulted in the isolation of the desired product as a yellow oil (9.64 g, 
94.7 percent). 
.sup.1 H NMR (300 MHZ, CDCl.sub.3, TMS): .delta.-0.062 (s, 3H), 0.043 (s, 
3H), 0.58 (s, 1H), 1.18 (s, 9H), 2.09 (s, 3H), 2.18 (s, 3H), 3.33 (s, 1H), 
7.07-7.28 (m, 3H), 7.44 (d, .sup.3 J.sub.HH =7.4 Hz, 1H). 
.sup.13 C NMR (75 MHz, CDCl.sub.3): .delta.0.0040, 0.90, 10.38, 15.39, 
33.96, 49.66, 50.60, 117.73, 122.22, 122.88, 124.42, 130.45, 140.38, 
144.14, 146.47. 
Preparation of Li.sub.2 
[(2,3-dimethylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 
Et.sub.2 O 
(2,3-dimethylindenyl)(t-butylamino)dimethylsilane (7.28 g, 0.0266 moles) 
was stirred in diethylether (80 mL) as n-BuLi (0.0559 moles, 22.4 mL of 
2.5 M solution in hexane) was added slowly. This mixture was then allowed 
to stir for 16 hours. After the reaction period the volatiles were removed 
and the residue washed with hexane and then collected as a solid via 
filtration which was used without further purification or analysis (8.34 
g, 92.0 percent). 
Preparation of (2,3-dimethylindenyl)dimethyl(t-butylamido)silane-titanium 
dichloride 
Li.sub.2 
[(2,3-dimethylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 
Et.sub.2 O (8.34 g, 0.0245 moles) was slowly added as a solid to a slurry 
of TiCl.sub.3 (THF).sub.3 (9.07 g, 0.0245 moles) in THF (75 mL). This 
mixture was allowed to stir for 30 minutes. PbCl.sub.2 (3.40 g, 0.0123 
moles) was then added to the mixture which was then allowed to stir for an 
additional 30 minutes. After the reaction period the volatiles were 
removed and the residue extracted and filtered using toluene. The toluene 
was then removed and the residue slurried in hexane and then collected as 
a solid by filtration. A second crop was obtained by concentrating and 
cooling the filtrate followed by a second filtration. The crops were then 
combined and determined to be the desired product (2.87 g, 30.0 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.48 (s, 3H), 0.60 (s, 3H, 
1.33 (s, 9H), 2.09 (s, 3H), 2.26 (s, 3H), 6.94-7.15 (m, 2H), 7.28 (d, 1H), 
7.63 (d, 1H). 
Example 7 
Preparation of (2,3-dimethylindenyl)dimethyl(t-butylamido)silanetitanium 
dimethyl 
(2,3-dimethylindenyl)dimethyl(t-butylamido)silane TiCl.sub.2 (0.750 g, 
0.00191 moles) was stirred in diethylether (50 mL) as methylMgl (0.00402 
moles, 1.34 mL 3.0 M solution in diethylether) was added dropwise. This 
mixture was then allowed to stir for 30 minutes. After the reaction period 
the volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the volatiles followed by a repeat of the filtration 
again using hexane resulted in the isolation of the desired product as a 
yellow oil after the removal of the hexane (0.620 g, 92.1 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.13 (s, 3H), 0.50 (s, 
3H), 0.60 (s, 3H), 0.66 (s, 3H), 1.47 (s, 9H), 1.93 (s, 3H), 2.24 (s, 3H), 
6.93 (t, 1H), 7.12 (t, 1H), 7.39 (d, 1H), 7.55 (d, 1H). 
Example 8 
Preparation of 
(2,3-dimethylindenyl)dimethyl(cyclo-dodecylamido)silanetitanium dichloride 
Preparation of Li.sub.2 
[(2,3-dimethylindenyl)(cyclododecylamido)dimethyl-silane]0.75 Et.sub.2 O 
(2,3-dimethylindenyl)(cyclododecylamido)dimethylsilane (5.47 g, 0.0142 
moles) was stirred in diethylether (25 mL) as n-BuLi (0.030 moles, 11.94 
mL of 2.5 M solution in hexane) was added slowly. This mixture was then 
allowed to stir for 16 hours. After the reaction period the volatiles were 
removed and the residue washed with hexane and then collected as a solid 
via filtration which was used without further purification or analysis 
(5.47 g, 85.2 percent). 
Preparation of 
(2,3-dimethylindenyl)dimethyl(cyclododecylamido)-silanetitanium dichloride 
Li.sub.2 
[(2,3-dimethylindenyl)(cyclododecylamido)dimethylsilane].circle-solid.3/4E 
t.sub.2 O (5.47 g, 0.0121 moles) was slowly added as a solid to a slurry of 
TiCl.sub.3 (THF).sub.3 (4.48 g, 0.0121 moles) in THF (75 mL). This mixture 
was allowed to stir for 45 minutes. PbCl.sub.2 (1.68 g, 0.00604 moles) was 
then added to the mixture which was then allowed to stir for an additional 
45 minutes. After the reaction period the volatiles were removed and the 
residue extracted and filtered using toluene. The toluene was then removed 
and the residue slurried in hexane and then collected as a red-brown 
crystalline solid by filtration. A second crop was obtained by 
concentrating and cooling the filtrate followed by a second filtration. 
The crops were then combined and determined to be the desired product 
(0.457 g, 7.6 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.52 (s, 3H), 0.63 (s, 3H), 
1.15-1.91 (m, 23H), 2.11 (s, 3H), 2.23 (s, 3H), 5.31 (m, 1H), 6.83-7.12 
(m, 2H), 7.29 (d, 1H), 7.63 (d, 3H). 
Example 9 
Preparation of 
(2,3-dimethylindenyl)dimethyl(cyclo-dodecylamido)silanetitanium dimethyl 
(2,3-dimethylindenyl)dimethyl(cyclododecylamido)silane TiCl.sub.2 (0.200 g, 
0.000400 moles) was stirred in diethylether (50 mL) as methylMgl (0.00084 
moles, 0.28 mL 3.0 M solution in diethylether) was added dropwise. This 
mixture was then allowed to stir for 30 minutes. After the reaction period 
the volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the volatiles followed by a repeat of the filtration 
again using hexane resulted in the isolation of the desired product as an 
orange crystalline solid after the removal of the hexane (0.134 g, 73.2 
percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.11 (s, 3H), 0.53 (s, 
3H), 0.61 (s, 3H), 0.65 (s, 3H), 1.10-1.90 (m, 23H), 1.98 (s, 3H), 2.26 
(s, 3H), 5.12-5.25 (m, 1H), 6.91 (t, 1H), 7.09 (t, 1H), 7.45 (d, 1H), 7.58 
(d, 1H). 
Example 10 
Preparation of (2-ethylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride 
Preparation of 2-Ethylindene 
2-Bromoindene (8.1235 g, 0.04211 moles) and Ni(dppp)Cl.sub.2 (0.1536 g, 
2.83.times.10.sup.-4 moles) were stirred in diethylether (100 mL) at 
-78.degree. C. under a nitrogen atmosphere as ethylMgBr (0.045 moles, 
15.00 mL of 3.0 M solution in diethylether) was added. The dry-ice bath 
was then removed and the reaction mixture allowed to warm to room 
temperature. The reaction mixture started off as a heterogeneous brick-red 
color and then turned to a homogeneous yellow/gold solution and then back 
to the heterogeneous brick-red mixture during the course of the warm-up. 
Gas chromatographic analysis after 2 hours of stirring at room temperature 
showed that the reaction was substantially quantitative. After the 
reaction period the mixture was poured onto ice and then extracted with 1 
M HCL (1.times.100 mL) and 1 M NaHCO.sub.3 (1.times.100 mL) and then dried 
with MgSO.sub.4 and filtered. The desired product was isolated as a light 
yellow oil (5.65 g, 93.1 percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3, TMS): .delta.1.31 (t, .sup.3 J.sub.HH 
=7.4 Hz, 3H), 2.59 (q, .sup.3 J.sub.HH =7.4 Hz, 2H), 3.39 (s, 2H), 6.59 
(s, 1H), 7.16-7.38 (m, 3H), 7.46 (d, .sup.3 J.sub.HH =7.4 Hz, 1H). 
.sup.13 C NMR (75 MHz, CDCl.sub.3): .delta.13.65, 24.63, 41.23, 119.96, 
123.47, 123.60, 125.25, 126.29, 143.12, 145.76, 152.47. 
GC-MS: Calculated for C.sub.11 H.sub.12 144.22, found 144.10. 
Preparation of Lithium-2-Ethylindenide 
2-Ethylindene (7.10 g, 0.049 moles) was stirred in hexane (100 mL) as 
n-BuLi (0.050 moles, 25.00 mL of 2.0 M solution in cyclohexane) was added 
dropwise. The mixture was then allowed to stir for 16 hours at room 
temperature during which time a solid precipitated. After the reaction 
period the solid was collected via suction filtration as a light yellow 
powder which was used without further purification or analysis (5.21 g, 
70.5 percent). 
Preparation of (2-ethylindenyl)(t-butylamine)dimethylsilane 
Chloro(t-butylamino)dimethylsilane (6.0038 g, 0.03623 moles) was stirred in 
THF (100 mL) as lithium-2-ethylindenide (4.96 g, 0.033 moles) in THF (25 
mL) was added dropwise. This mixture was allowed to stir for 16 hours at 
room temperature. After the reaction period the volatiles were removed and 
the residue extracted and filtered using hexane. Removal of the hexane 
resulted in the isolation of the desired product as a yellow oil (8.64 g, 
95.7 percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3): .delta.0.067 (s, 3H), 0.085 (s, 3H), 
1.18 (s, 9H), 1.25 (t, .sup.3 J.sub.HH =7.5 Hz, 3 H), 2.46-2.54 (m, 1H), 
2.54-2.82 (m, 1H), 3.47 (s, 1H), 6.57 (s, 1H), 7.04-7.45 (m, 4H). 
Preparation of Li.sub.2 
[(2-ethylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 Et.sub.2 
O 
(2-ethylindenyl)(t-butylamino)dimethylsilane (7.24 g, 0.026 moles) was 
stirred in diethylether (50 mL) as n-BuLi (0.0556 moles, 22.2 mL of 2.50 M 
solution in hexane) was added slowly. This mixture was then allowed to 
stir for 16 hours. After the reaction period the volatiles were removed 
and the residue washed with hexane and then collected as a solid via 
filtration which was used without further purification or analysis (6.79 
g, 75.2 percent). 
Preparation of (2-ethylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride 
Li.sub.2 [(2-ethylindenyl)(t-butylamido)dimethylsilane].circle-solid.0.75 
Et.sub.2 O (6.79 g, 0.0199 moles) was slowly added as a solid to a slurry 
of TiCl.sub.3 (THF).sub.3 (7.37 g, 0.0199 moles) in THF (75 mL). This 
mixture was allowed to stir for 45 minutes. PbCl.sub.2 (2.76 g, 0.00995 
moles) was then added to the mixture which was then allowed to stir for an 
additional 45 minutes. After the reaction period the volatiles were 
removed and the residue extracted and filtered using toluene. The toluene 
was then removed and the residue slurried in hexane and then collected as 
a red-brown crystalline solid by filtration. A second crop was obtained by 
concentrating and cooling the filtrate followed by a second filtration. 
The crops were then combined and determined to be the desired product 
(3.15 g, 40.6 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.45 (s, 3H), 0.57 (s, 3H), 
1.19 (t, 3H), 1.34 (s, 9H), 2.43-2.70 (m, 2H), 6.81 (s, 1H), 6.90-7.09 (m, 
2H), 7.28 (d, 1H), 7.62 (d, 1H). 
Example 11 
Preparation of (2-ethylindenyl)dimethyl(t-butylamido)silanetitanium 
dimethyl 
(2-ethylindenyl)dimethyl(t-butylamido)silane TiCl.sub.2 (0.500 g, 0.00128 
moles) was stirred in diethylether (50 mL) as MeMgl (0.00269 moles, 0.900 
mL 3.0 M solution in diethylether) was added dropwise. This mixture was 
then allowed to stir for 30 minutes. After the reaction period the 
volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the volatiles followed by a repeat of the filtration 
again using hexane resulted in the isolation of the desired product as a 
yellow oil after the removal of the hexane (0.310 g, 69.2 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.11 (s, 3H), 0.49 (s, 
3H), 0.57 (s, 3H), 0.83 (s, 3H), 1.14 (t, 3H), 1.47 (s, 9H), 2.20-2.34 (m, 
1H), 2.36-2.51 (m, 1H), 6.83 (s, 1H), 6.85-6.94 (m, 1H), 7.03-7.12 (m, 
1H), 7.46 (d, 1H), 7.53 (d, 1H). 
Example 12 
Preparation of (2-propylindenyl)dimethyl(t-butylamido)silanetitanium 
dichloride 
Preparation of 2-Propylindene 
To an oven-dried 250 mL round bottom flask containing a magnetic stir bar 
and equipped with a reflux condenser and vacuum adapter was added 
2-bromoindene (15.0 g, 76.9 mmol) and Ni(dppp)Cl.sub.2 (0.42 g, 0.77 mmol) 
(dppp=1,3-bis(diphenyl-phosphino)propane). The flask was stoppered and 
evacuated. Deoxygenated anhydrous diethyl ether (150 mL) was added via 
cannula under argon at -78.degree. C. The reaction was stirred under argon 
without exterior cooling as 42 mL of a 2.0 M propylmagnesium chloride in 
ether solution was added via syringe (84 mmol propylmagnesium chloride). 
The reaction was placed in a dry ice/acetone bath when a vigorous reflux 
was achieved. The dry ice/acetone bath was removed after 2 minutes, and 
the reaction was stirred at room temperature under argon for 90 minutes. 
The reaction was carefully poured into water and 10 weight percent aqueous 
HCl was added until the mixture was acidic. The mixture was extracted with 
ether (3.times.200 mL), and the combined organic layers were washed with 
water (1.times.250 mL), with aqueous sodium bicarbonate (1.times.250 mL), 
and with aqueous saturated sodium chloride solution (1.times.250 mL). 
Drying over anhydrous sodium sulfate followed by filtration and solvent 
removal yielded 12.14 g (99.7 percent) of the desired product. 
.sup.1 H NMR (300 MHz, CDCl.sub.3, TMS): .delta.7.4-7.0 (m, 4H), 6.48 (s, 
1H), 3.26 (s, 2H), 2.43 (t, .sup.3 J.sub.HH =7.4 Hz, 2H), 1.61 (s, .sup.3 
J.sub.HH =7.4 Hz, 2H), 0.96 (t, .sup.3 J.sub.HH =7.4 Hz, 3H). 
.sup.13 C NMR (75 MHz, CDCl.sub.3), .delta.150.17, 145.46, 142.83, 126.03, 
125.96, 123.30, 123.10, 119.64, 40.81, 33.23, 22.15, 13.95. 
GC-MS: Calculated for C.sub.12 H.sub.14 158.11, found 158.05. 
Preparation of Lithium-2-Propylindenide 
2-Propylindene (11.0 g, 0.069 moles) was stirred in hexane (500 mL) as 
n-BuLi (0.076 moles, 30.6 mL of 2.5 M solution in hexane) was added 
dropwise. The mixture was then allowed to stir for 16 hours at room 
temperature during which time a solid precipitated. After the reaction 
period the solid was collected via suction filtration as a light yellow 
powder which was used without further purification or analysis (10.8 g, 
94.3 percent). 
Preparation of (2-propylindenyl)(t-butylamino)dimethylsilane 
Dimethylsilyl(t-butylamino)chloride (3.03 g, 0.018 moles) was stirred in 
THF (100 mL) as lithium-2-propylindenide (3.00 g, 0.018 moles) in THF (20 
mL) was added dropwise. This mixture was allowed to stir for 16 hours at 
room temperature. After the reaction period the volatiles were removed and 
the residue extracted and filtered using hexane. Removal of the hexane 
resulted in the isolation of the desired product as a yellow oil (4.67 g, 
89.0 percent). This compound was used without further purification or 
analysis. 
Preparation of Li.sub.2 
[(2-propylindenyl)(t-butylamido)dimethylsilane].cndot.3/4 Et.sub.2 O 
(2-propylindenyl)(t-butylamino)dimethylsilane (4.67 g, 0.0162 moles) was 
stirred in diethylether (75 mL) as n-BuLi(0.0341 moles, 13.70 mL of 2.50 M 
solution in hexane) was added slowly. This mixture was then allowed to 
stir for 16 hours. After the reaction period the volatiles were removed 
and the residue washed with hexane and then collected as a solid via 
filtration which was used without further purification or analysis (4.92 
g, 85.3 percent). 
Preparation of (2-propylindenyl)dimethyl(t-butylamido)silanetitanium 
Dichloride 
Li.sub.2 [(2-propylindenyl)(t-butylamido)dimethylsilane].cndot.3/4 Et.sub.2 
O (4.92 g, 0.0138 moles) was slowly added as a solid to a slurry of 
TiCl.sub.3 (THF).sub.3 (5.12 g, 0.0138 moles) in THF (75 mL). This mixture 
was allowed to stir for 45 minutes. PbCl.sub.2 (1.92 g, 0.00691 moles) was 
then added to the mixture which was then allowed to stir for an additional 
45 minutes. After the reaction period the volatiles were removed and the 
residue extracted and filtered using toluene. The toluene was then removed 
and the residue slurried in hexane and then collected as a red-brown 
crystalline solid by filtration. A second crop was obtained by 
concentrating and cooling the filtrate followed by a second filtration. 
The crops were then combined and determined to be the desired product 
(2.20 g 39.4 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.49 (s, 3 H), 0.58 (s, 3 
H), 0.80 (t, 3 H), 1.35 (s, 9 H), 1.47-1.64 (m, 2 H), 2.51-2.73 (m, 2 H), 
6.83 (s, 1 H), 6.93 (t, 1 H), 7.05 (t, 1 H), 7.29 (d, 1 H), 7.63 (d, 1 H) 
EXAMPLE 13 
Preparation of (2-propylindenyl)dimethyl(t-butylamido)silanetitanium 
Dimethyl 
(2-propylindenyl)dimethyl(t-butylamido)silane TiCl.sub.2 (0.500 g, 0.00124 
moles) was stirred in diethylether (50 mL) as MeMgl (0.00260 moles, 0.870 
mL 3.0 M solution in diethylether) was added dropwise. This mixture was 
then allowed to stir for 30 minutes. After the reaction period the 
volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the volatiles followed by a repeat of the filtration 
again using hexane resulted in the isolation of the desired product as a 
yellow oil after the removal of the hexane (0.340 g, 75.6 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): d-0.11 (s, 3 H), 0.52 (s, 3 H), 
0.57 (s, 3 H), 0.85 (t, 3 H), 1.48 (s, 9 H), 1.56-1.70 (m, 2 H) 2.20-2.32 
(m, 1 H), 2.40-2.52 (m, 1 H), 6.84 (s, 1 H), 6.90 (t, 1 H), 7.08 (t, 1 H), 
7.46 (d, 1 H), 7.53 (d, 1 H). 
EXAMPLE 14 
Preparation of 
(2-methyl-4-phenylindenyl)dimethyl(t-butylamido)silanetitanium Dichloride 
Preparation of (2-methyl-4-phenylindenyl)(t-butylamino)dimethylsilane 
2-methyl-4-phenylindene (synthesized substantially according to the 
technique reported in U.S. Pat. No. 5,329.033) (3.00 g, 0.014 moles) in 
THF (10 mL) was added dropwise to a stirring solution of KH (0.601 g, 
0.0150 moles) in THF (50 mL). This mixture was allowed to stir for 16 
hours. The solution was then filtered and added dropwise to a solution of 
dimethylsilyl(t-butylamino)chloride (2.41 g, 0.0145 moles) in THF (75 mL). 
This mixture was allowed to stir for 16 hours. After the reaction period 
the volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the volatiles resulted in the isolation of the desired 
product as a light yellow oil (4.00 g, 82.0 percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3): .delta.-0.0056 (s, 3 H), 0.18 (s, 3 H), 
1.21 (s, 9 H), 1.46 (s, 1 H), 2.29 (s, 3 H), 3.50 (s, 1 H), 6.73 (s, 1 H), 
7.11-7.61 (m, 8 H). 
Preparation of 
(2-methyl-4-phenylindenyl)dimethyl(t-butylamido)-silanetitanium Dichloride 
(2-methyl-4-phenylindenyl)(t-butylamino)dimethylsilane (1.13 g, 0.00338 
moles) was stirred in diethylether (50 mL) as n-BuLi (0.00676 moles, 2.71 
mL of 2.50 M solution on hexane) was added dropwise. This solution was 
allowed to stir for 3 hours and then added dropwise to a slurry of 
TiCl.sub.3 (THF).sub.3 (1.25 g, 0.00338 moles) in THF (75 mL). This 
solution was then allowed to stir for 3 hours. Methylene chloride (0.50 
mL) was then added to the solution which was allowed to stir for an 
additional 30 minutes. After the reaction period the volatiles were 
removed and the residue extracted and filtered using hexane. The removal 
of the hexane resulted in the isolation of a dark residue which was then 
redissolved in THF (50 mL) and stirred with PbCl.sub.2 (1.0186 g, 0.003663 
moles) for 30 minutes. After the reaction period the volatiles were 
removed and the mixture extracted and filtered using hexane. Concentration 
of this solution and subsequent cooling to -78.degree. C. resulted in the 
isolation of the desired product as a red/brown crystalline solid (0.8493 
g, 55.5 percent) 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.43 (s, 3 H), 0.60 (s, 3 
H), 1.36 (s, 9 H), 2.09 (s, 3 H), 6.98-7.29 (m, 7 H), 7.61 (d, 1 H), 7.67 
(d, 1 H) 
EXAMPLE 15 
Preparation of 
(2-methyl-4-phenylindenyl)dimethyl(t-butylamido)silanetitanium Dimethyl 
(2-methyl-4-indenyl)dimethyl(t-butylamido)silane TiCl.sub.2 (0.254 g, 
0.000563 moles) was stirred in toluene (50 mL) at 0.degree. C. as MeMgBr 
(0.00113 moles, 0.38 mL of 3.0 M solution in diethylether) was added 
dropwise. This mixture was then allowed to stir for 16 hours. After the 
reaction period the volatiles were removed and the residue extracted and 
filtered using hexane. Removal of the hexane result in the isolation of 
the desired product as an amorphous solid (0.149 g, 64.3 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.029 (s, 3 H), 0.48 (s, 3 
H), 0.61 (s, 3 H), 0.86 (s, 3 H), 1.49 (s, 9 H), 1.96 (s, 3 H), 6.90-7.35 
(m, 7 H), 7.53 (d, 1 H), 7.67 (d, 1 H) 
EXAMPLE 16 
Preparation of (.eta..sup.5 
-2,3,4,6,7-pentamethylindenyl)dimethyl-(t-butylamido)silanetitanium 
Dichloride 
Preparation of E-1-(2,3,5,6-tetramethylphenyl)-2-methyl-2-buten-1-ol 
Lithium mesitylene (7.55 g, 0.0588 moles) was slurried in diethylether (50 
mL) at 0.degree. C. as trans-2-methyl-2-butenol (5.04 g, 0.0588 moles) was 
added dropwise. This solution was then allowed to stir for 16 hours at 
room temperature. After the reaction period the mixture was poured onto 
ice water, the organic layer separated and washed with water, and then 
dried over MgSO.sub.4. Filtration and removal of the volatiles followed by 
recrystallization from hexane resulted in the isolation of the desired 
product (5.88 g, 57.4 percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3, TMS): .delta.1.40-1.66 (m, 6 H), 1.82 
(br, 1 H), 2.25 (s, 3 H), 2.31 (s, 6 H), 5.41-5.51 (m, 1 H), 6.81 (s, 1 H) 
GC-MS: Calculated for C.sub.14 H.sub.20 O 204.32, found 204.15. 
Preparation of 1,2,4,5,7-pentamethylindene 
Preparation of E-1-(2,3,5,6-tetramethylphenyl)-2-methyl-2-buten-1-ol (1.50 
g, 0.00734 moles) in hexane (20 mL) was added dropwise to concentrated 
H.sub.2 SO.sub.4 (20 mL) at 0.degree. C. The resulting red solution was 
then allowed to warm to room temperature and then quenched by adding the 
solution dropwise to a solution of Na.sub.2 CO.sub.3 (300 mL of 1.89 M 
solution) at 0.degree. C. The organic layer was then separated and the 
aqueous layer extracted with pentane (3.times.100 mL). The organic layers 
were then combined and dried over MgSO.sub.4 followed by filtration and 
solvent removal resulting in the isolation of the desired product (1.22 g, 
89.7 percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3): .delta.1.55 (s, 3 H), 2.04 (s, 3 H), 
2.24 (s, 3 H), 2.28 (s, 3 H), 2.46 (s, 3 H), 3.07 (s, 2 H), 6.75 (s, 1 H) 
Preparation of Lithium-2,3,4,5,7-pentamethylindenide 
1,2,4,5,7-pentamethylindene (1.22 g, 0.00655 moles) was stirred in pentane 
(250 mL) as n-BuLi (0.00655 moles, 2.61 mL of 2.50 M solution in hexane) 
was added dropwise. The mixture was then allowed to stir for 48 hours at 
room temperature during which time a solid precipitated. After the 
reaction period the solid was collected via suction filtration which was 
used without further purification or analysis (1.07 g, 85.6 percent). 
Preparation of (2,3,4,6,7-pentamethylindenyl)(t-butylamino)dimethyl-silane 
Choloro(t-butylamino)dimethylsilane (0.922 g, 0.0556 moles) was stirred in 
THF (50 mL) as lithium-2,3,4,6,7-pentamethylindenide (1.07 g, 0.0556 
moles) in THF (20 mL) was added dropwise. This mixture was then refluxed 
for 30 minutes and then allowed to stir to room temperature. After the 
reaction period the volatiles were removed and the residue extracted and 
filtered using hexane. Removal of the hexane resulted in the isolation of 
the desired product as (1.76 g, 99.9 percent). 
GC-MS: Calculated for C.sub.20 H.sub.33 NSi 315.58, found 315.25. 
Preparation of Li.sub.2 
[(2,3,4,6,7-pentamethylindenyl)(t-butylamido)-dimethylsilane].cndot.0.75 
Et.sub.2 O 
(2,3,4,6,7-pentamethylindenyl)(t-butylamino)dimethylsilane (1.76 g, 0.00558 
moles) was stirred in diethylether (35 mL) as n-BuLi (0.0112 moles, 4.46 
mL of 2.50 M solution in hexane) was added slowly. This mixture was then 
allowed to stir for 16 hours. After the reaction period the volatiles were 
removed and the residue washed with hexane and then collected as a solid 
via filtration which was used without further purification or analysis 
(1.32 g, 72.1 percent). 
Preparation of 
(2,3,4,6,7-pentamethylindenyl)dimethyl(t-butylamido)-silanetitanium 
Dichloride 
Li.sub.2 
[(2,3,4,6,7-pentamethylindenyl)(t-butylamido)dimethylsilane].cndot.0.75 
Et.sub.2 O (1.32 g, 0.0403 moles) was slowly added as a solid to a slurry 
of TiCl.sub.3 (THF).sub.3 (1.49 g, 0.0403 moles) in THF (75 mL). This 
mixture was allowed to stir for 45 minutes. PbCl.sub.2 (0.560 g, 0.00201 
moles) was then added to the mixture which was then allowed to stir for an 
additional 45 minutes. After the reaction period the volatiles were 
removed and the residue extracted and filtered using pentane. The pentane 
extract was then concentrated and cooled to -20.degree. C., followed by 
the collection of the desired product as a red/brown microcrystalline 
material via filtration (0.33 g, 19 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.56 (s, 3 H), 0.62 (s, 3 
H), 1.39 (s, 9 H), 2.10 (s, 3 H), 2.16 (s, 3 H), 2.30 (s, 3 H), 2.37 (s, 3 
H), 2.53 (s, 3 H), 6.71 (s, 1 H) 
EXAMPLE 17 
Preparation of 
(2,3,4,6,7-pentamethylindenyl)dimethyl(t-butylamido)silanetitanium 
Dimethyl 
(2,3,4,6,7-pentamethylindenyl)dimethyl(t-butylamido)silane TiCl.sub.2 
(0.243 g, 0.000562 moles) was stirred in diethylether (30 mL) as MeMgl 
(0.00112 moles, 0.380 mL 3.00 M solution in diethylethen was added 
dropwise. This mixture was then allowed to stir for 30 minutes. After the 
reaction period the volatiles were removed and the residue extracted and 
filtered using pentane. Removal of the pentane resulted in the isolation 
of the desired product as a yellow solid (0.181 g, 82.3 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.14 (s, 3 H), 0.57 (s, 3 
H), 0.61 (s, 3 H), 0.63 (s, 3 H), 1.50 (s, 9 H), 1.99 (s, 3 H), 2.14 (s, 3 
H), 2.23 (s, 3 H), 2.38 (s, 3 H), 2.46 (s, 3 H), 6.66 (s, 1 H). 
EXAMPLE 18 
Preparation of (2,3-dimethylindenyl)dimethyl(t-butylamido)silanetitanium 
(III) 2-(N,N-dimethyl)aminobenzyl 
In the drybox 0.543 g (1.5 mmol) of TiCl.sub.3 (THF).sub.3 was stirred in 
approximately 60 ml of THF. Dilithium 
(N-t-butylamido)(dimethyl)(2,3-dimethylindenyl)silane (3/4 Et.sub.2 O) 
(0.50 g, 1.5 mmol) was added as a solid while stirring. Stirring was 
continued for 15 minutes, then 0.207 g (1.5 mmol) of lithium 
(2-N,N-dimethylamino)benzyl was added and stirring continued for 30 more 
minutes. The THF was then removed under reduced pressure. Hexane was added 
to the residue. The brown/red precipitate was collected via filtration and 
washed with cold hexane. The solid product was dried under reduced 
pressure to yield 0.593 g (89.2 percent) of product. 
EXAMPLE 19 
Preparation of (2,3-dimethylindenyl)dimethyl(adamantyl-amido)silanetitanium 
Dichloride 
Preparation of Lithium-1-adamantanamide 
1-Adamantanamine (14.1 g, 0.0931 moles) was stirred in hexane (300 mL) as 
n-BuLi (0.0978 moles, 39.0 ml of 2.50 M solution in hexane) was added 
dropwise. The mixture was allowed to stir for 16 hours at room temperature 
during which time a solid precipitated. After the reaction period the 
solid was collected via suction filtration as a white solid which was used 
without further purification or analysis (13.4 g, 91.9 percent). 
Preparation of (1-acamantylamino)chlorodimethylsilane 
In the drybox 20.53 g of dichlorodimethylsilane (20.5 g, 0.159 moles) was 
stirred in THF (150 mL) as lithium-1-adamantanamide (10.0 g, 0.064 moles) 
in THF (100 mL) was added slowly as a slurry. This mixture was allowed to 
stir for 2.5 hours at room temperature. After the reaction period the 
volatiles were removed and the residue extracted and filtered using 
hexane. Removal of the hexane resulted in the isolation of the desired 
product as a white solid (14.3 g, 92.1 percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3): .delta.0.46 (s, 6 H), 1.28 (br, 1 H), 
1.62 (s, 6 H), 1.74 (s, 6 H), 2.04 (s, 3 H). 
.sup.-- C NMR (75 MHz, CDCl.sub.3): .delta.4.97, 30.12, 36.41, 46.74, 
50.67. 
Preparation of (2,3-dimethylindenyl)(1-adamantylamino)dimethylsilane 
(1-adamantylamino)chlorodimethylsilane (5.48 g, 0.0225 moles) was stirred 
in THF (100 mL) as lithium 2.3-dimethylindenide (3.40 g, 0.0225 moles) in 
THF (25 mL) was added dropwise. This mixture was allowed to stir for 8 
hours. After the reaction period the volatiles were removed and the 
residue extracted and filtered using hexane. Removal of the hexane 
resulted in the isolation of the desired product as a solid. (7.69 g, 97.0 
percent). 
.sup.1 H NMR (300 MHz, CDCl.sub.3): .delta.-0.053 (s, 3 H), 0.022 (s, 3 H), 
1.61 (s, 6 H), 1.66 (s, 6 H), 2.03 (s, 3 H), 2.08 (s, 3 H), 2.18 (s, 3 H), 
3.33 (s, 1 H), 7.04-7.27 (m, 3 H), 7.45 (d, .sup.3 J.sub.HH =7.4 Hz, 1 H). 
The proton for the amine could not be resolved from the rest of the 
spectrum. 
Preparation of Dilithio 
[(2,3-dimethylindenyl)(1-adamantylamido)-dimethylsilane] 
(2,3-dimethylindene)(1-adamantylamino)dimethylsilane (7.69 g, 0.0218 moles) 
was stirred in hexane (150 mL) as n-BuLi (0.0436 moles, 17.4 mL of 2.50 M 
solution in hexane) was added slowly. This mixture was then allowed to 
stir for 16 hours. After the reaction period the mxiture was filtered and 
the desired product isolated as a pale yellow powder which was used 
without further purification or analysis (7.68 g, 96.6 percent). 
Preparation of 
(2,3-dimethylindenyl)dimethyl(1-adamantylamido)silane-titanium Dichloride 
Dilithio (2,3-dimethylindenyl)(1-adamantylamido)dimethylsilane (7.68 g, 
0.0211 moles) in THF (50 mL) was added dropwise to a slurry of TiCl.sub.3 
(THF).sub.3 (7.81 g, 0.0211 moles) in THF (100 mL). This mixture was 
allowed to stir for three hours. PbCl.sub.2 (3.18 g, 0.0114 moles) was 
then added to the mixture which was then allowed to stir for an additional 
hour. After the reaction period the volatiles were removed and the residue 
extracted and filtered using toluene. The toluene was then removed and the 
residue slurried in hexane and then cooled to -15.degree. C. The desired 
product was then collected as a red-brown crystalline solid by filtration 
(7.70 g, 77.9 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.0.55 (s, 3 H), 0.67 (s, 3 
H), 1.49 (q, .sup.3 J.sub.HH =10.6 Hz, 6 H), 1.93 (s, 3 H), 2.02 (s, 6 H), 
2.14 (s, 3 H), 2.30 (s, 3 H), 7.01 (t, .sup.3 J.sub.HH =7.2 Hz, 1 H), 7.13 
(t, .sup.3 J.sub.HH =8.3 Hz, 3 H), 7.31 (d, .sup.3 J.sub.HH =8.5 Hz, 1 H), 
7.69 (d, .sup.3 J.sub.HH =8.6 Hz, 1 H). 
EXAMPLE 20 
Preparation of (2,3-dimethylindenyl)dimethyl)1-adamantylamidosilanetitanium 
Dimethyl 
(2,3-dimethylindenyl)dimethyl(1-adamantylamido)silanetitanium dichloride 
(0.300 g, 0.000640 moles) was stirred in THF (60 mL) as MeMgBr (0.00192 
moles, 1.40 mL of a 1.40 M solution in toluene/THF) was added dropwise. 
This mixture was then allowed to stir for 1 hour. After the reaction 
period the volatiles were removed and the residue extracted and filtered 
using hexane. Removal of the hexane resulted in the isolation of the 
desired product as a yellow solid (0.228 g, 83.2 percent). 
.sup.1 H NMR (300 MHz, C.sub.6 D.sub.6): .delta.-0.079 (s, 3 H), 0.57 (s, 3 
H), 0.66 (s, 3 H), 0.71 (s, 3 H), 1.61 (br s, 6 H), 1.98 (s, 3 H), 2.03 
(br s, 3 H), 2.11 (s, 6 H), 2.27 (s, 3 H), 6.96 (t, .sup.3 J.sub.HH =7.4 
Hz, 1 H), 7.09-7.21 (m, 1 H), 7.41 (d, .sup.3 J.sub.HH =8.2 Hz, 1 H), 7.60 
(d, .sup.3 J.sub.HH =8.3 Hz, 1 H). 
Polymrizations 
A two-liter Parr reactor was charged with 740 g of Isopar-E.TM. mixed 
alkanes solvent (available from Exxon Chemicals Inc.) and 118 g of 
1-octene comonomer. Hydrogen was added as a molecular weight control agent 
by differential pressure expansion from a 75 mL addition tank at 25 psi 
(2070 kPa). The reactor was heated to the polymerization temperature of 
140.degree. C. and saturated with ethylene at 500 psig (3.4 MPa). 2.0 
.mu.mol each of catalyst and cocatalyst at 0.005 M solutions in toluene 
were premixed in the drybox. After the desired premix time, the solution 
was transferred to a catalyst addition tank and injected into the reactor. 
The polymerization conditions were maintained for 15 minutes with ethylene 
on demand. The resulting solution was removed from the reactor, and a 
hindered phenol antioxidant (Irganox.TM. 1010 from Ciba Geigy Corporation) 
was added to the resulting solution. Polymers formed were dried in a 
vacuum oven set at 120.degree. C. for 20 hours. Results are contained in 
Table 1. 
TABLE 1 
______________________________________ 
Run Complex Cocatalyst 
MI (dg/min).sup.3 
______________________________________ 
1 Ex. 2 TPFPB.sup.2 
0.4 
2 Ex. 5 " 0.8 
3 Ex. 7 " 0.8 
4 Ex. 11 " 1.1 
5 Ex. 13 " 1.2 
6 Ex. 15 " 3.3 
7 Ex. 17 " 1.0 
8 Ex. 20 " 0.9 
9* TTTD.sup.1 " 4.5 
______________________________________ 
*Comparative, not an example of the invention 
.sup.1. (tetramethylcyclopentadienyl)dimethyl(tbutylamido)silanetitanium 
dimethyl 
.sup.2. trispentafluorophenylborane 
.sup.3. melt index, I.sub.2, measured in accordance with ASTM D1238 
(190/2.16) 
Efficiencies in runs 1-8 of the above polymerizations average approximately 
80 percent of those attained in comparative run 9. The results of the 
above polymerixations indicate that significantly higher molecular weight 
polymers are formed by the use of the present, substituted indenyl 
containing metal complexes compared to previously known constrained 
geometry or amidosilane bridge monocyclopentadienyl based metal complexes 
at the same reaction conditions. Such a result is highly desirable, 
particularly in a solution polymerizaton reaction, due to the fact that 
the operator is now able to obtain a given molecular weight polymer at a 
higher reaction temperature, thereby increasing productivity and reducing 
processing costs. Moreover, previously unattainable, low melt index, high 
comonomer content, high molecular weight, ethylene/.alpha.-olefin 
copolymers, especially EP and EPDM copolymers can be readily produced 
using such catalyst systems. 
EXAMPLE 21 
Preparation of 
(2,3,4,6-tetramethylindenyl)dimethyl(t-butylamido)silanetitanium Dimethyl 
Preparation of 2,4,6-Trimethylindanone 
m-Xylene (34.1 g, 0.32 moles) and 2-bromoisobutyryl bromide (73.9 g, 0.32 
moles) were stirred in methylene chloride (500 mL) at 0.degree. C. as 
AlCl.sub.3 (108.98 g, 0.82 moles) was added slowly as a solid under a 
nitrogen flow over a 20 minute period of time. The reaction was then 
allowed to stir at 0.degree. C. for 1 hour and then for 16 hours at 
20.degree. C. After the reaction period the mixture was poured on crushed 
ice and then filtered through diatomaceous earth (Celite.TM. brand). The 
mixture was then extracted with 1 M HCl (2.times.100 mL), 1 M NaHCO.sub.3 
(1.times.100 mL), and H.sub.2 O (1.times.100 mL) and the organic layer 
dried over MgSO.sub.4. Filtration followed by removal of the volatiles 
resulted in the isolation of a yellow oil. Vacuum distillation resulted in 
the isolation of the desired product as a pale yellow oil (50.4 g, 89.9 
percent yield). 
Preparation of 2,3,4,6-Tetramethylindene 
2,4,6-Trimethylindanone (30.0 g, 0.17 moles) was stirred in diethylether 
(300 mL) at 0.degree. C. as MeMgl (0.24 moles, 80.00 mL of 3.0 M solution 
in diethylether) was added dropwise. This mixture was stirred for another 
30 minutes at 0.degree. C. and then at 20.degree. C. for an additional 3 
hours. After the reaction period the mixture was poured on crushed ice, 
acidified with HCl, and extracted with 1 M HCl (2.times.100 mL), 1 M 
NaHCO.sub.3 (1.times.100 mL), and then H.sub.2 O (1.times.100 mL). Drying 
over MgSO.sub.4 followed by filtration and solvent removal resulted in the 
isolation of a light brown oil. Vacuum distillation resulted in the 
isolation of the desired product as a pale yellow oil (28.0 g, 94.3 
percent yield). 
Preparation of Lithium 2,3,4,6-Tetramethylindenide 
2,3,4,6-Tetramethylindene (11.12 g, 64.52 mmol) was stirred in hexane (250 
mL) as nBuLi (70 mmol, 28 mL of 2.5 M solution in hexane) was added 
slowly. This mixture was allowed to stir overnight. After the reaction 
period the desired product was isolated as an off-white solid via 
filtration and used without further purification or analysis (10.98 g, 
95.5 percent yield). 
Preparation of Dimethylsilyl(2,3,4-tetramethylindenyl)chloride 
Lithium 2,3,4,6-trimethylindenide (10.98 g, 61.6 moles) in THF (50 mL) was 
added dropwise to a solution of Me.sub.2 SiCl.sub.2 (25.4 g, 0.2 moles) in 
THF (50 mL) at 0.degree. C. This mixture was then allowed to stir at 
20.degree. C. for 16 hours. After the reaction period the volatiles were 
removed and the residue extracted and filtered using hexane. Removal of 
the hexane resulted in the isolation of the desired compound as a pale 
yellow oil (16.1 g, 99.4 percent yield). 
Preparation of Dimethylsilyl(2,3,4,6-tetramethylindenyl)(t-butylamine) 
Dimethylsilyl(2,3,4,6-tetramethylindenyl)Cl (16.1 g, 60.8 mmol) was stirred 
in hexane (200 mL) as NEt.sub.3 (6.51 g, 64.4 mmol) was added followed by 
t-butylamine (5.61 g, 76.8 mmol). This mixture was allowed to stir for 24 
hours. After the reaction period the mixture was filtered and the desired 
product isolated as a pale yellow oil following the removal of the 
volatiles (18.24 g, 99.5 percent yield). 
Preparation of Dilitium (N-t-Butylamido)(dimethyl) 
(2,3,4,6-tetramethylindenyl)silane 
In the drybox 7.4 g (25.4 mmol) of (N-t-Butylamino)(dimethyl) 
(2,3,4,6-tetramethylindenyl) silane was dissolved in 300 ml of hexane. To 
this solution 24.5 ml (70.6 mmol) of nBuLi (2.00 M) was added dropwise. 
Upon complete addition of the nBuLi the solution was stirred for 12 hours 
after which the solvent was removed under reduced pressure to give 7.79 g 
(100 percent yield) of a yellow-orange powder. 
Preparation of 
[(N-t-Butylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane] Titanium 
Dichloride 
In the drybox 9.21 g (24.8 mmol) of TiCl.sub.3 (THF).sub.3 was dissovled in 
75 ml of THF. To this solution 7.79 g (24.8 mmol) of dilithium 
(N-t-Butylamido) (dimethyl)(2,3,4,6-tetramethylindenyl)silane was added as 
a solid while stirring. The solution was then stirred for 45 minutes. 
After this time period 3.45 g of PbCl.sub.2 (12.4 mmol) was added and the 
solution stirred for 45 minutes. The THF was then removed under reduced 
pressure. The residue was then extracted with toluene, the solution 
filtered, and the toluene removed under reduced pressure. The residue was 
then triturated with hexane and the solution volume reduced whereupon a 
red precipitate was formed and collected via filtration and washed with 
cold hexane. The solid product was dried under vacuum to yield 5.63 g (53 
percent yield) of product. 
EXAMPLE 22 
Preparation of 
[(N-t-Butylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane] Titanium 
Dimethyl 
In the drybox .400 g of 
[(N-t-Butylamido)(dimethyl)(2,3,4,6-tetramethylindenyl) silane]titanium 
dichloride (0.9 mmol) was suspended in 50 ml of Et.sub.2 O. To this 
suspension 0.67 ml of MeMgl (3.0 M) was added dropwise while stirring over 
a 20 minute period. After the addition MeMgl was completed, the solution 
was stirred for 40 minutes. Then the Et.sub.2 O was removed under reduced 
pressure and the residue extracted with hexane, the solution filtered, the 
filtrate evaporated to dryness under reduced pressure to give 0.28 g (77 
percent yield) of product. 
EXAMPLE 23 
Preparation of 
[(N-cyclohexylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)-silane]titanium 
Dimethyl 
Preparation of Dimethylsilyl(2,3,4,6-tetramethylindenyl)(cyclohexylamine) 
Dimethylsilyl(2,3,4,6-tetramethylindenyl)Cl (9.95 g, 37.8 mmol) was stirred 
in hexane (200 mL) as NEt.sub.3 (4.1 g, 40.6 mmol) was added followed by 
cyclohexylamine (4.05 g, 40.8 mmol). This mixture was allowed to stir for 
24 hours at 20.degree. C. After the reaction period the mixture was 
filtered and the desired product isolated as a pale yellow oil following 
the removal of the volatiles (10.98 g, 89.3 percent yield). 
Preparation of Dilitium (N-cyclohexylamido)(dimethyl) 
(2,3,4,6-tetramethylindenyl)silane 
In the drybox 4.0 g (12.6 mmol) of (N-cyclohexylamino)(dimethyl) 
(2,3,4,6-tetramethylindenyl) silane was dissolved in 300 ml of hexane. To 
this solution 12.6 ml (25.2 mmol) of nBuLi (2.00 M) was added dropwise at 
20.degree. C. Upon complete addition of the nBuLi the solution was stirred 
for 12 hours after which the solvent was removed under reduced pressure to 
give 4.12 g (96 percent yield) of a yellow-orange powder. 
Preparation of 
[(N-cyclohexylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane] Titanium 
Dichloride 
In the drybox 4.63 g (12.5 mmol) of TiCl.sub.3 (THF).sub.3 was dissolved in 
75 ml of THF. To this solution 4.12 g (12.5 mmol) of dilithium 
(N-cyclohexylamido) (dimethyl)(2,3,4,6-tetramethylindenyl)silane was added 
as a solid while stirring at 20.degree. C. The solution was then stirred 
for 45 minutes. After this time period 1.73 g of PbCl.sub.2 (6.25 mmol) 
was added and the solution stirred for 45 minutes. The THF was then 
removed under reduced pressure. The residue was then extracted with 
toluene, the solution filtered, and the toluene removed under reduced 
pressure. The residue was then triturated with hexane and the solution 
volume reduced whereupon a red precipitate was formed and collected via 
filtration and washed with cold (0.degree. C.) hexane. The solid product 
was dried under vacuum to yield 1.70 g (31 percent yield) of product. 
EXAMPLE 24 
Preparation of 
[(N-cyclohexylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane]titanium 
Dimethyl 
In the drybox 0.300 g of 
[(N-t-cyclohexylamino)(dimethyl)(2,3,4,6-tetramethylindenyl) 
silane]titanium dichloride (0.675 mmol) was suspended in 50 ml of Et.sub.2 
O at 20.degree. C. To this suspension 0.45 ml of MeMgl (3.0 M) was added 
dropwise while stirring over a 20 minute period. After the addition MeMgl 
was completed, the solution was stirred for 40 minutes. Then the Et.sub.2 
O was removed under reduced pressure and the residue extracted with 
hexane, the solution filtered, the filtrate evaporated to dryness under 
reduced pressure to give 0.27 g (100 percent yield) of product. 
EXAMPLE 25 
Preparation of 
[(N-t-Butylamido)(dimethyl)(2-propylindenyl)silane]titanium(II)-(1,4-diphe 
nyl-1,3-butadiene) 
In a 100 ml flask 0.500 g of 
(N-t-butylamido)(dimethyl)(2-propylindenyl)silane]titanium dichloride 
(1.23 mmol, from Example 12) was stirred with 0.225 g of 
1,4-diphenyl-1,3-butadiene (1.23 mmol) in 70 ml of hexane. To this 
solution 1.0 ml of 2.5M nBuLi (in hexane) was added and the mixture 
refluxed for 1h. After cooling the solution to room temperature, the 
solution was filtered. The filter residue was then washed with hexane. The 
hexane was then removed from the filtrate under reduced pressure to give 
0.460 g (69 percent yield) of product. 
EXAMPLE 26 
Preparation of 
[(N-cyclohexylamido)(dimethyl)(2,3-methylindenyl)silane]-titanium(II)(1,4- 
diphenyl-1,3-butadiene) 
In a 100 ml flask 0.300 g of 
(N-cyclohexylamido)(dimethyl)(2,3-methylindenyl)silane)titanium dichloride 
(0.720 mmol, from Example 23) was stirred with 0.149 g of 
1,4-diphenyl-1,3-butadiene (0.720 mmol) in 70 ml of hexane at 0.degree. C. 
To this solution 0.577 ml of 2.5M nBuLi (in hexane) was added and the 
mixture refluxed for 2h. After cooling the solution to 20.degree. C., the 
solution was filtered. The filter residue was then washed with hexane. The 
hexane was then removed from the filtrate under reduced pressure to give 
0.109 g (27 percent yield) of product. 
Polymerization Runs 
A two-liter Parr reactor was charged with 740 g of mixed alkanes solvent 
(Isopar.TM.-E) and 118 g of 1-octene comonomer. Hydrogen was added as a 
molecular weight control agent by differential pressure expansion from an 
.about.75 ml addition tank at 25 psi (2070 Kpa). The reactor was heated to 
the polymerization temperature of 140.degree. C. and saturated with 
ethylene at 500 psig (3.4 Mpa). 2.0 mmol each of catalyst and cocatalyst 
at 0.005M solutions in toluene were premixed in the drybox. After the 
desired premix time, the solution was transferred to a catalyst addition 
tank and injected into the reactor. The polymerization conditions were 
maintained for 15 minutes with ethylene on demand. The resulting solution 
was removed from the reactor, and a hindered phenol anti-oxidant 
(Irganox.TM. 1010 from Ciba Geigy Corp.) was added to the resulting 
solution. Polymers formed were dried in a vacuum oven set at 120.degree. 
C. for about 20 hours. Results are contained in Table 2 
TABLE 2 
______________________________________ 
Catalyst Cocatalyst 
Melt Index 
______________________________________ 
Example 22.sup.1 
B(C.sub.6 F.sub.5).sub.3 
0.67 
Example 22.sup. 
" 0.49 
Example 24.sup.2 
" 0.40 
Example 24.sup. 
" 0.46 
Example 25.sup.3 1.54 
______________________________________ 
.sup.1 
[(Nt-Butylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane]Titanium 
Dimethyl 
.sup.2 
[(Ncyclohexylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane]Titanium 
Dimethyl 
.sup.3 [(Nt-Butylamino)(dimethyl)(2-propylindenyl)silane]titanium 
(1,4diphenyl-1,3-butadiene) 
EXAMPLE 27 
Preparation of 
[(N-isopropylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane] Titanium 
Dimethyl 
Preparation of Dimethylsilyl(2,3,4,6-tetramethylindenyl)(isopropylamine) 
Dimethylsilyl(2,3,4,6-tetramethylindenyl)Cl (22.29 grams, 84.17 mmol) was 
stirred in THF as i-PrNH.sub.2 (28.68 mL, 336.7 mmol) was added. The 
mixture was stirred for 16 hours. The volatiles were removed under reduced 
pressure. The residue was extracted with hexane and filtered through a 
diatomaceous earth filter aid on a 10-15 mm glass frit. The hexane was 
removed under reduced pressure to afford the product as a yellow oil. 
Yield; 17.23 grams, 71 percent. 
Preparation of 
[(N-isopropylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane]titanium 
Dichloride 
In the drybox 17.23 grams (59.93 mmol) of 
dimethylsilyl(2,3,4,6-tetramethylindenyl)(isopropylamine) was dissolved in 
350 mL of hexane in a 500 mL round-bottom schlenk flask. Tow equivalents 
of n-BuLi (47.94 mL, 2.5 M in hexanes) were then added via syringe. The 
reaction was stirred for twelve hours. The solvent was removed under 
reduced pressure to afford a orange powder. The powder was dissolved in 
250 mL of THF. TiCl.sub.3 (THF).sub.3 (22.2 grams, 59.93 mmol) was added 
as a solid. After 15 minutes, CH.sub.2 Cl.sub.2 (2.48 mL, 29.97 mmol) was 
added. After two hours, the solvent was removed under reduced pressure. 
The residue was extracted with toluene and filtered through a diatomaceous 
earth filter aid on a 10-15 mm glass frit. The toluene was removed under 
reduced pressure. The residue was slurried in hexane and filtered over a 
10-15 mm glass frit. The residue was dried under reduced pressure to 
afford a red powder. Yield; 12.3 grams, 51 percent. 
Preparation of 
[(N-isopropylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane]titanium 
Dimethyl 
In the drybox, 
[(N-isopropylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane]titanium 
dichloride (6.92 grams, 17.12 mmol) was suspended in 150 mL of Et.sub.2 O 
in a 250 mL round bottom flask. Two equivalents of a 3.0 M THF solution of 
MeMgCl (11.41 mL, 34.23 mmol) were added. The mixture was stirred for one 
hour. The volatiles were removed under reduced pressure. The residue was 
extracted with hexane and filtered through a diatomaceous earth filter aid 
on a 10-15 mm glass frit. The hexane was removed under reduced pressure to 
afford a orange powder. Yield; 5.8 grams, 93 percent. 
EXAMPLE 28 
Preparation of 
[(N-isopropylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane]titanium 
(1,4-diphenyl-1,3-butadiene) 
In the drybox, 0.50 grams (1.24 mmol) of 
[(N-isopropylamido)(dimethyl)(2,3,4,6-tetramethylindenyl)silane] titanium 
dichloride was slurried in 60 mL of cyclohexane in a 100 mL round-bottom 
schlenk flask. 1,4-Diphenyl-1,3-butadiene (0.255 grams, 1.24 mmol) was 
added as a solid. Two equivalents of n-BuLi (0.989 mL, 2.5 M in hexanes) 
were then added via syringe. The flask was fitted with a condenser and 
heated to reflux for one hour. Upon cooling, the reaction was filtered 
through a diatomaceous earth filter aid (Celite.TM.) on a 10-15 mm glass 
frit. The salts and filter aid were washed with 50 mL of pentane. The 
solvent was removed under reduced pressure to afford a red/brown powder. 
Yield; 300 mg, 45 percent. 
Polymerization 
Polymerization experiments were performed using a 3.8 liter stirred reactor 
charged with 1440 g of Isopar E.TM. (mixed alkanes; available from Exxon 
Chemicals Inc.), 132 g of 1-octene, and 10 mMol of hydrogen. The reactor 
was heated to 130.degree. C. and saturated with ethylene to 450 psig (4.5 
Mpa). The catalyst was prepared in a drybox by syringing together 5.0 mmol 
(1.0 mL, 0.005 M) of the metal complex, 15.0 mmol (1.0 mL, 0.015 M) of 
cocatalyst, trispentafluorophenylborane (TPFPB), and 50.0 mmol (1.0 mL, 
0.05 M) of modified scavenger, methylaluminoxane (from Akzo-Nobel), with 
additional Isopar E.TM. to give a total volume of 17 mL. The catalyst 
solution was then transferred by syringe to a catalyst addition loop and 
injected into the reactor over approximately 4 minutes using a flow of 
high pressure solvent. The polymerization was allowed to proceed for 10 
minutes while feeding ethylene on demand to maintain a pressure of 445 
psig (4.5 Mpa). The polymer solution was then poured from the reactor into 
a nitrogen-purged glass kettle containing approximately 15 mL of 
isopropanol. A 20 mL aliquot of a stabilizer solution prepared by 
dissolving 6.66 g of Irgaphos.TM. 168 and 3.33 g of Irganox.TM. 1010 in 
500 mL of toluene was added. The polymer solution was poured into a tray, 
air dried overnight, then thoroughly dried in a vacuum oven for two days. 
Results of polymerizations using the metal complexes of the invention and 
a comparative are contained in Table 3 
TABLE 3 
______________________________________ 
Run Complex Cocatalyst 
MI (dg/min).sup.3 
______________________________________ 
1 Ex. 27 TPFPB.sup.2 
0.25 
2 Ex.28 " 0.22 
3* TTTD.sup.1 " 4.8 
______________________________________ 
*Comparative, not an example of the invention. 
.sup.1. (tetramethylcyclooentadienyl)dimethyl(tbutylamido)silanetitanium 
dimethyl 
.sup.2. trispentafluorophenylborane 
.sup.3. melt index, I.sub.2, of the polymer measured in accordance with 
ASTM D1238 (190/2.16) 
As may be seen by comparison of the above results, the catalysts according 
to the present invention produce a polymer product that has a 
significantly lower melt index under comparable conditions, thereby 
signifying a significantly greater catalytic activity unded comparative 
polymerization conditions.