Synthesis, Characterization and Ethylene Oligomerization Studies of Nickel Complexes Bearing 2-Benzimidazolylpyridine Derivatives
作者:Peng Hao、Shu Zhang、Wen-Hua Sun、Qisong Shi、Sherrif Adewuyi、Xiaoming Lu、Peizhou Li
DOI:10.1021/om070049e
日期:2007.4.1
(Et2AlCl), all the nickel complexes exhibited good catalytic activities for ethylene oligomerization, and the nickel(II) complexes bearing 2-(1-methyl-2-benzimidazole)-6-(1-aryliminoethyl)pyridines showed good activities up to 5.87 × 105 g mol-1(Ni) h-1 atm-1. The various reaction parameters were investigated in detail, and the results revealed that both the steric and electronic effects of ligands strongly
2-(2-苯并咪唑)-6-甲基吡啶,2-(1-甲基-2-苯并咪唑)-6-乙酰吡啶和2-(1-甲基-2-苯并咪唑)-6-连接的一系列镍配合物合成(1-芳基乙基)吡啶,并通过IR光谱和元素分析进行检查。它们的分子结构通过单晶X射线衍射分析确定。在用二乙基氯化铝(Et 2 AlCl)活化后,所有镍配合物均表现出良好的乙烯低聚催化活性,并且带有2-(1-甲基-2-苯并咪唑)-6-(1-芳基乙基)的镍(II)配合物。吡啶在5.87×10 5 g mol -1(Ni)h -1 atm -1下显示出良好的活性。详细研究了各种反应参数,结果表明,配位体的空间和电子效应都强烈影响其镍配合物的催化活性以及不同的配位方式。
Iron(II) and Cobalt(II) 2-(Benzimidazolyl)-6-(1-(arylimino)ethyl)pyridyl Complexes as Catalysts for Ethylene Oligomerization and Polymerization
作者:Wen-Hua Sun、Peng Hao、Shu Zhang、Qisong Shi、Weiwei Zuo、Xiubo Tang、Xiaoming Lu
DOI:10.1021/om0700819
日期:2007.5.1
A series of iron(II) (7a−11a) and cobalt(II) (7b−11b) 2-(1-methyl-2-benzimidazolyl)-6-(1-(arylimino)ethyl)pyridyl complexes were synthesized, as well as bidentate iron(II) and cobalt(II) complexes ligated by 2-(2-benzimidazolyl)-6-methylpyridine, 2-(carboethoxyl)-6-(2-benzimidazolyl)pyridine, and 2-(1-methyl-2-benzimidazolyl)-6-acetylpyridine. All organic compounds were fully characterized by NMR and