中文摘要：

合成了两种双吡唑亚胺镍配合物：双-N-（苯基-1-3，5-二甲基吡唑基亚甲基）苯基亚胺二溴化镍（Cat．1）和双-4-甲氧基-N-（苯基-1-3，5-二甲基毗唑基亚甲基）苯基亚胺二溴化镍（Cat．2）．研究了Cat．1／MAO和Cat．2／MAO催化体系对降冰片烯（NBE）单体聚合的催化性能，考察了各种聚合条件，如温度、Al／Ni摩尔比及催化剂浓度对降冰片烯的催化效率、单体转化率、聚合物分子量及分子量分布的影响．研究结果表明，Cat．1／MAO和Cat．2／MAO催化体系对降冰片烯聚合具有较高的催化效率，可达到10^5gPNBE／（mol Ni）数量级，所得聚降冰片烯（PNBE）的重均分子量在10^5以上，分子量分布指数在2左右．聚合产物的^1H NMR和FTIR谱分析结果表明，该聚合反应是以单体的乙烯基加成聚合机理进行的．

英文摘要：

Two bispyrazolylimine nickel complexes [ bis-N- （phenyl-1,3,5-dimethylpyrazolylmethylene） pheny- limine nickel dibromide] （Cat. 1） and [ bis-4-methoxy-N-（phenyl-1,3,5-dimethylpyrazolylmethylene） phenylimine nickel dibromide ] （Cat. 2） were synthesized. Norbornene polymerization catalyzed by Cat. 1/MAO and Cat. 2/MAO systems was investigated. The catalytic efficiency, molecular weight and molecular weight distribution were influenced by the polymerization conditions, such as the polymerization temperature, Al/Ni molar ratio and catalyst concentration. The results show that Cat. 1/MAO and Cat. 2/MAO systems displayed a high catalytic efficiency with 10^5 g PNBE/（ mol Ni） magnitude order. The molecular weights of PNBE were higher than 10^5 and the molecular weight distributions were around 2. According to ^1H NMR and the FTIR spectra, the mechanism of the norbornene polymerization is vinyl-addition type polymerization.