Diimine complexes for olefin polymerization

A process for coupling two or more olefins, the process comprising:

• 1) introducing into a reaction vessel an activator and a catalyst of formula I:
• where
• M is a metal selected from Groups 3 to 10 of the Periodic Table;
• R1 and R2 are the same or different and are independently selected from hydrogen, C1-10 alkyl, C6-10 aryl, or C7-15 aralkyl, each of these optionally substituted with halogen, cyano, C1-4 alkoxy, or C1-4 alkyl, and with the proviso that not more than 1 of R1 or R2 is a hydrocarbon which is branched at the imino-bonded carbon atom;
• R3, R4, R5, and R6 are independently hydrogen, C1-10 alkyl, C6-10 aryl, C7-15 aralkyl, C1-10 alkoxy, or C1-10 dialkylamino, each of these optionally substituted with halogen, cyano, C1-4 alkoxy, or C1-4 alkyl, or wherein any two adjacent R3 through R6 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;
• and
• 2) introducing at least one olefin into the reaction vessel, wherein at least two molecules of olefin are coupled together.