Synthesis and Characterization of a Palladium Complex Supported by Bidentate Ligand and Catalysis of the Vinyl Polymerization of Norbornene

摘要

The title complex N,O-bis{[2-[(2,4-dimethylphenyl)imino]-5-methoxyl]-phenol}-palladium(Ⅱ) (C32H32N2O4Pd) has been synthesized by the reaction of 2-[(2,4-dimethyl-phenyl)imino]-5-methoxyl-phenol with Pd(CH3COO)2,and characterized by elemental analysis,IR spectrum and single-crystal X-ray diffraction analysis.The crystal belongs to the monoclinic system,space group P21/c with a =12.058(2),b =8.3624(17),c =14.735(3) (A),β =107.66(3)°,V =1415.7(5)(A)3,C32H32N2O4Pd,Mr =615,Z--2,Dc =1.443 Mg/m3,μ =0.695 mm-1,F(000) =632,T =293(2) K,the final R =0.0514 and wR =0.1356 (I＞ 2σ(I)).Under the co-catalysis of methylaluminoxane (MAO),the palladium compound exhibited favorable catalytic activity for the polymerization of norbomene(NB).