Nickel catalysts with single alkali ions for homopolymerization and copolymerization

A bimetallic catalyst complex having a structure selected from Formula (5) and Formula (6):

• wherein in Formula (5) and Formula (6):
• Ar is 2,6-dimethoxyphenyl;
• L is an optionally substituted phenyl group;
• M is Li, Na, K, or Cs;
• A− is a weakly coordinating anion;
• X, Y, and Z are each independently selected from hydrogen, an electron donating group,
• and an electron withdrawing group;
• and
• R1, R2, and R3 are each independently selected from optionally substituted aryl, optionally substituted alkyl, and optionally substituted cycloalkyl.