Ni2Â +-template mechanism to the nonsymmetrical Salen-type Schiff-base Ni2Â + complex with effective catalysis on styrene polymerization

Through the Ni2 +-template mechanism to nonsymmetrical Salen-type Schiff-base Ni2 + complexes, the representative complex 1 as the catalyst exhibits a good catalytic activity up to 1.03 × 106 g·mol− 1 h− 1 on the solution polymerization of styrene.52