Synthesis, Structure and Norbornene Polymerization Catalyzed by Bis{(2-benzhydryl-4,6-dimethylphenyl)-(3,5-di-tert-butyl-2-methylbenzylidene)-amine-N,O}nickel(II)

The title complex bis{(2-benzhydryl-4,6-dimethyl-phenyl)-(3,5-di-tert-butyl-2-me-thylbenzylidene)- amine-N, O} nickel has been synthesized by the reaction of (2-benzhydryl-4,6dimethyl- phenyl)-(3,5-di-tert-butyl-2-methyl-benzylidene)-amine with Ni(CH3COO)(2)center dot 4H(2)O, and characterized by IR spectrum and single-crystal X-ray diffraction analysis. The crystal belongs to the monoclinic system, space group P2(1)/c with a = 12.373(4), b = 18.434(7), c = 27.814(10) angstrom, beta = 92.291(6)degrees, V = 6339(4) angstrom(3), C72H80N2NiO2, M-r = 1064.09, Z = 4, D-c = 1.115 g/cm(3), mu = 0.350 mm(-1), F(000) = 2280, the final R = 0.0846 and wR = 0.2926 (I > 2 sigma(I)). This title compound was used as homogeneous catalysis of polymerization of norbornene, and the complex exhibited good catalytic activity to catalyze norbornene polymerization using MAO as a cocatalyst.