Ferrous rather than ferric species are the active sites in bis(imino)pyridine iron ethylene polymerization catalysts

被引：75
|
作者：
Bryliakov, KP
Semikolenova, NV
Zudin, VN
Zakharov, VA
Talsi, EP
机构：
[1] Russian Acad Sci, Siberian Branch, GK Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Dept Nat Sci, Novosibirsk 630090, Russia
来源：
CATALYSIS COMMUNICATIONS | 2004年 / 5卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
ethylene; iron; mechanism; polymerization; H-1; NMR; EPR;
D O I：
10.1016/j.catcom.2003.11.010
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
H-1 NMR and EPR spectroscopic studies show that the iron centers in bis(imino)pyridine iron(II) and bis(imino)pyridine iron(III) olefin polymerization pre-catalysts LFeCl2 and LFeCl3 (L=bis(imino)pyridine) are converted upon treatment with methylaluminoxane (MAO) into ferrous complexes of the type [L(Me)Fe(II)(mu-Me)(2)AlMe2] or [LFe(II)(mu-Me)(2)AlMe2](+)[Me-MAO](-). (C) 2003 Published by Elsevier B.V.
引用
收藏
页码：45 / 48
页数：4
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