Experimental Evidence for Large Ring Metallacycle Intermediates in Polyethylene Chain Growth Using Homogeneous Chromium Catalysts

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• 作者：Atanas K. Tomov ; Juan J. Chirinos ; David J. Jones ; Richard J. Long ; and Vernon C. Gibson
• 刊名：Journal of the American Chemical Society
• 出版年：2005
• 出版时间：July 27, 2005
• 年：2005
• 卷：127
• 期：29
• 页码：10166 - 10167
• 全文大小：61K
• 年卷期：v.127,no.29(July 27, 2005)
• ISSN：1520-5126

文摘

Deuterio-ethylene labeling studies on two homogeneous chromium ethylene oligomerization catalysts show that chain propagation proceeds via metallacyclic intermediates; reactions performed in the presence of 1-nonene show no incorporation of the higher olefin, strongly implicating the involvement of large ring metallacycles.