Patent ID: 7022785

Claim:
A catalyst comprising a complex having formula I: where M is a metal selected from Groups 3 to 10 of the Periodic Table; R 1 and R 2 are the same or different and are independently selected from hydrogen, C 1-10 alkyl, C 6-10 aryl, or C 7-15 aralkyl, each of these optionally substituted with halogen, cyano, C 1-4 alkoxy, or C 1-4 alkyl, and with the proviso that not more than 1 of R 1 or R 2 is a hydrocarbon which is branched at the imino-bonded carbon atom; R 3 , R 4 , R 5 , and R 6 are independently hydrogen, C 1-10 alkyl, C 6-10 aryl, C 7-15 aralkyl, C 1-10 alkoxy, or C 1-10 dialkylamino, each of these optionally substituted with halogen, cyano, C 1-4 alkoxy, or C 1-4 alkyl, or wherein any two adjacent R 3 through R 6 form a cyclic structure or are part of a larger ring structure, said cyclic structure and said larger ring structure optionally containing one or more heteroatoms, preferably B, N, O, S, or P; L is a neutral or charged ligand; and p is a integer such that complex I is neutral and the valency of M is satisfied.