Spectral studies of a Cr(PNP)-MAO system for selective ethylene trimerization catalysis: searching for the active species.
Spectral studies of a Cr(PNP)-MAO system for selective ethylene trimerization catalysis: searching for the active species.
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用于选择性乙烯三聚催化的 Cr(PNP)-MAO 系统的光谱研究:寻找活性物种。
DOI:
10.1021/cs400778a
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发表时间:
2013-11-01
期刊:
影响因子:
12.9
通讯作者:
Bercaw, John E.
中科院分区:
文献类型:
--
作者:
Do, Loi H.;Labinger, Jay A.;Bercaw, John E.
Variable temperature spectroscopic, kinetic, and chemical studies were performed on a soluble CrIIICl3(PNP) (PNP = bis(diarylphosphino)alkylamine) ethylene trimerization precatalyst to map out its methylaluminoxane (MAO) activation sequence. These studies indicate that treatment of CrIIICl3(PNP) with MAO leads to first replacement of chlorides with alkyl groups, followed by alkyl abstraction, and then reduction to lower–valent species. Reactivity studies demonstrate that the majority of the chromium species detected is not catalytically active.
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影响因子:
15
作者:
Agapie, T;Schofer, SJ;Bercaw, JE
通讯作者:
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