Patent ID: 7105672

Claim:
A catalyst of formula: wherein: each of R 1 –R 7 is independently —H, -halo, —NO 2 , —CN, —(C 1 –C 30 )hydrocarbyl, —O(C 1 –C 30 )hydrocarbyl, —N((C 1 –C 30 )hydrocarbyl) 2 , —Si((C 1 –C 30 )hydrocarbyl) 3 , —(C 1 –C 30 )heterohydrocarbyl, -aryl, or -heteroaryl, each of which is unsubstituted or substituted with one or more —R 8 groups; or two R 1 –R 7 join to form a cyclic group; R 8 is -halo, —(C 1 –C 30 )hydrocarbyl, —O(C 1 –C 30 )hydrocarbyl, —NO 2 , —CN, —Si((C 1 –C 30 )hydrocarbyl) 3 , —N((C 1 –C 30 )hydrocarbyl) 2 , —(C 1 –C 30 )heterohydrocarbyl, -aryl, or -heteroaryl; T is —CR 9 R 10 — wherein R 9 and R 10 are defined as for R 1 above; E is a Group 16 element; M is a metal selected from the group consisting of group 3–6 elements; m is the oxidation state of the M; X is R 1 excluding —H, wherein X is bonded to M; Y is a neutral ligand datively bound to M; and n is an integer ranging from 0 to 5.