Electron Effect of p-Substituent on Iron（Ⅱ） and Cobalt（Ⅱ） Pyridinebisimine Catalyst for Ethylene Polymerization  

作　　者：刘靖宇 郑毅 胡宁海 李悦生 

机构地区：[1]State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China

出　　处：《Chinese Journal of Chemistry》2006年第10期1447-1451,共5页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundationof China and China Petroleum ＆ Chemical Corporation （No. 20334030）.

摘　　要：A series of 2,6-bis（imino）pyridyl iron and cobalt complexes bearing p-substituent [2,6-（ArN=CMe）2C5H3N]- MCl2 （Ar=2,6-Me2C6H3, 2,4,6-Me3C6H2, 2,6-Me2-4-BrC6H2, 2,6-Me2-4-ClC6H2, 2,4-Me2-6-BrC6H2, 2,4-Me2-6- ClC6H2, while M=Fe, Co） have been synthesized and investigated as catalysts for ethylene polymerization in the presence of modified methylaluminoxane as a cocatalyst. The electron effect and positions of the substituent of pyridinebisimine ligands were observed to affect considerably catalyst activity and polymer property.A series of 2,6-bis（imino）pyridyl iron and cobalt complexes bearing p-substituent [2,6-（ArN=CMe）2C5H3N]- MCl2 （Ar=2,6-Me2C6H3, 2,4,6-Me3C6H2, 2,6-Me2-4-BrC6H2, 2,6-Me2-4-ClC6H2, 2,4-Me2-6-BrC6H2, 2,4-Me2-6- ClC6H2, while M=Fe, Co） have been synthesized and investigated as catalysts for ethylene polymerization in the presence of modified methylaluminoxane as a cocatalyst. The electron effect and positions of the substituent of pyridinebisimine ligands were observed to affect considerably catalyst activity and polymer property.

关 键 词：iron complex cobalt complex CATALYST ethylene polymerization 

分 类 号：O632.12[理学—高分子化学] O631.5[理学—化学]