Patent ID: 7507782

Claim:
A transition metal complex comprising formula (Z A )M A X k (V), wherein: M A is a transition metal of group 3 or 4 of the Periodic Table of Elements; Z A is a ligand of formula (IV) wherein A A is P; R 2A - R 10A are each, independently of one another, hydrogen, C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 6 -C 20 -aryl, alkylaryl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, NR 11A 2 , N(SiR 11A 3 ) 2 , OR 11A , OSiR 11A 3 , SiR 11A 3 or halogen, wherein the organic radicals R 2A -R 10A may also be substituted by halogens and two vicinal radicals R 2A -R 10A may also be joined to form a five- or six-membered ring, and/or two vicinal radicals R 2A -R 10A may be joined to form a heterocycle containing at least one atom from the group consisting of N, P, O or S; R 11A are each, independently of one another, hydrogen, C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 6 -C 20 -aryl, alkylaryl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part and two geminal radicals R 11A may also be joined to form a five- or six-membered ring; R 1X -R 2X are each, independently of one another, hydrogen, C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 6 -C 20 -aryl, alkylaryl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part or SiR 3X 3 , wherein the organic radicals R 1X -R 2X may also be substituted by halogens or nitrogen- and oxygen-containing groups and two radicals R 1X -R 2X may also be joined to form a five- or six-membered ring; R 3X are each, independently of one another, hydrogen, C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 6 -C 20 -aryl, alkylaryl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part and two radicals R 3X may also be joined to form a five- or six-membered ring; X are each, independently of one another, fluorine, chlorine, bromine, iodine, hydrogen, C 1 -C 10 -alkyl, C 2 -C 10 alkenyl, C 6 -C 20 -aryl, alkylaryl comprising 1-10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, NR 1X R 2X , OR 1X , SR 1X , SO 3 R 1X , OC(O)R 1X , CN, SCN, β-diketonate, CO, BF 4 − , PF 6 − or a bulky noncoordinating anion; and k is 1, 2, or 3.