Ethylene Polymerization in the Presence of Iron(II) 2,6-Bis(imine)pyridine Complex: Structures of Key Intermediates

被引：0
作者：
E. P. Talzi
D. E. Babushkin
N. V. Semikolenova
V. N. Zudin
V. A. Zakharov
机构：
[1] Russian Academy of Sciences,Boreskov Institute of Catalysis, Siberian Division
来源：
Kinetics and Catalysis | 2001年 / 42卷
关键词：
Iron; Polymerization; Spectroscopy; Chloride; Ethyl;
D O I：
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学科分类号：
摘要：
The structures of intermediates generated by the activation of 2,6-bis[1-(2,6-dimethylphenylimino)ethyl]pyridineiron(II) chloride (1) with various cocatalysts, methylalumoxane (MAO), trimethylaluminum (TMA), and TMA in combination with B(C6F5)3and Ph3CB(C6F5)4, is studied by 1H and 2HNMR spectroscopy. The 1/AlMe3system exhibits a higher catalytic activity in ethylene polymerization than the 1/MAO system. The activity of the latter decreases sharply with a decrease in the amount of AlMe3in MAO. Neutral Fe(II) complexes rather than cationic intermediates are suggested to be active components in both catalytic systems.
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页码：147 / 153
页数：6
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