In Search of a Versatile Pathway to ansa-Chromocene Complexes. Synthesis and Characterization of the Highly Unstable ansa-Chromocene Carbonyl Complex Me2C(C5H4

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• 作者：Philippe Perrotin ; Pamela J. Shapiro ; Mark Williams ; Brendan Twamley
• 刊名：Organometallics
• 出版年：2007
• 出版时间：March 26, 2007
• 年：2007
• 卷：26
• 期：7
• 页码：1823 - 1826
• 全文大小：74K
• 年卷期：v.26,no.7(March 26, 2007)
• ISSN：1520-6041

文摘

In an effort to develop a general synthetic route toansa-chromocene complexes with diverse ligand frameworks,we investigated ansa-magnesocene compounds as an alternative,potentially more versatile ligand source than ansa-calcocenecompounds. The first single-carbon-bridged ansa-chromocenecompound, Me₂C(C₅H₄)₂CrCO, was isolated from the reactionbetween Me₂C(C₅H₄)₂Mg and CrCl₂ in THF under an atmosphere of carbon monoxide. This new ansa-chromocene compound is considerably more air-sensitive and less chemicallystable than its ethanediyl-bridged counterparts.