Polymerization catalyst activator complexes and their use in a polymerization process

A process for polymerizing olefins comprising combining one or more olefins with a catalyst system comprising a catalyst compound and an activator compound, wherein the activator compound is represented by:

• wherein each Mi is a Group 13 atom;
• each R3, R3′, R3″, and R3′″ group is independently selected from:
• C1 to C30 alkyls, C1 to C30 heteroatom containing alkyls, C1 to C30 alkoxys, halogenated C1 to C30 alkoxys, C2 to C30 alkenyls, C6 to C60 aryls, C6 to C60 aryloxys, halogenated C6 to C60 aryloxys, and C6 to C60 halogenated aryls;
• with the proviso that at least one of R3, R3′, R3″, and R3′″ is a fluorinated C6 to C60 aryl group
• R1 and R2 are independently selected from substituted or unsubstituted C1 to C100 hydrocarbylenes, aliphatic or aromatic;
• R, when present, is a substituted or unsubstituted C30 hydrocarbylene aliphatic or aromatic group;
• wherein when R is absent, R1 and R2 are bound together;
• and
• x is 0 or an integer from 1 to 100.