Patent ID: 6541584
Filing Date: 2003-04-01
Classification: C07C,C07F,C08F,Y10S

Abstract:
A bridged bis(tetrahydro-indenyl)metallocene of formula (I): wherein:M is a transition metal belonging to group 3, 4, 5, 6 or to the lanthanide or actinide groups of the Periodic Table of the Elements; the substituents X, the same or different from each other, are monoanionic sigma ligands selected from the group consisting of hydrogen, halogen, â€”R, â€”OR, â€”OSO2CF3, â€”OCOR, â€”SR, â€”NR2 and â€”PR2 groups, wherein the R substituents are linear or branched, saturated or unsaturated, C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radicals, optionally containing one or more atoms belonging to groups 13-17 of the Periodic Table of the Elements, and two R substituents may form a 5-7 membered ring; (ZR1i)j is a divalent group bridging the two tetrahydro-indenyl residues, Z being selected from the group consisting of C, Si, Ge, N and P; the substituents R1, the same or different from each other, are selected from the group consisting of hydrogen, linear or branched, saturated or unsaturated C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl and C7-C20 arylalkyl radicals, optionally containing one or more atoms belonging to groups 13-17 of the Periodic Table of the Elements; the substituents R2 and R3, the same or different from each other, are selected from the group consisting of halogen, linear or branched, saturated or unsaturated C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl and C7-C20 arylalkyl radicals, optionally containing one or more atoms belonging to groups 13-17 of the Periodic Table of the Elements, â€”OR, â€”SR, â€”NR2, N-pyrrolyl, N-indolyl, â€”PR2, â€”BR2 and â€”SiR3 groups, wherein the R substituents have the meaning reported above; or two adjacent R3 substituents form a ring having from 4 to 8 carbon atoms; p is an integer ranging from 0 to 3, being equal to the oxidation state of the metal M minus 2; i is 1 or 2; j is an integer ranging from 1 to 4; m is an integer ranging from 1 to 2; and n is an integer ranging from 0 to 8.