Expanded anionic compounds comprising hydroxyl or quiescent reactive functionality and catalyst activators therefrom

A cocatalyst or cocatalyst component, comprising a compound corresponding to the formula:

• (A*+a)b(Z*J*′j)−cd and one of the following formulas:
• wherein A* is a cation of from 1 to 80 atoms, not counting hydrogen atoms, said A* having a charge +a,
• wherein R4, independently each occurrence, is hydrogen or a hydroxyhydrocarbyl, halo, hydrocarbyl, halocarbyl, halohydrocarbyl, silylhydrocarbyl, or silyl group of up to 30 atoms not counting hydrogen, or a quiescent reactive group,
• J*′ independently each occurrence is a Lewis acid of from 1 to 80 atoms, not counting hydrogen atoms, coordinated to at least one Lewis base site of Z*, and optionally two or more such J*′ groups may be joined together in a moiety having multiple Lewis acidic functional groups,
• j is a number from 2 to 12 and
• a, b, c, and d are integers from 1 to 3, with the proviso that a×b is equal to c×d, and provided further that one or more of A*, Z* or J*′comprises a hydroxyl group or a polar group containing a quiescent reactive functional group.