have been confirmed by low-temperature X-ray diffraction analysis. The methyl complex p-MePhC(NSiMe3)2Ni(Me)(Py) (13) is not stable and rapidly decomposes, forming the complex [p-MePhC(NSiMe3)]2Ni(Py) (14). Complex 3 activated with MAO has been shown to be an efficient catalytic system for the norbornene vinyl-type polymerization. The activity of the catalyst and the molecular weights of the resulting
新型中性
镍络合物PhC(NSiMe 3)2 Ni(acac)(3),PhC(NSiMe 3)2 Ni(acac)(TME
DA)(4),[PhC(NSiMe 3)2 ] 2 Ni 2(5) ,[PhC(NSiMe 3)2 ] 2 Ni·Li 2 Br 2(TME
DA)2(6),(TME
DA)2 Ni(7),p -MePhC(NSiMe 3)2 Ni(acac)(8),p-MePhC(NSiMe 3)2 Ni(acac)(TME
DA)(9),[ p -MePhC(NSiMe 3)2 ] 2 Ni(10),NiMe 2 Py 2(11)和[ p -MePhC(NSiMe 3)已经合成并表征了] 2 Ni(Py)(14)。所有配合物的固态分子结构已通过低温X射线衍射分析得到证实。甲基络合物p -MePhC(NSiMe 3)2 Ni(Me)(Py)(13)不稳定且迅速分解,形成复合物[ p -MePhC(NSiMe