Intramolecular Exchange of Coordinated and Dangling Phosphine Groups in Pentacarbonyl[(diphenylphosphino)(di-p-tolylphosphino)methane]tungsten(0)

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• 作者：Richard L. Keiter ; Deliang Chen ; Geoffrey A. Holloway ; Ellen A. Keiter ; Yi Zang ; M. Todd Huml ; Jonathan Filley ; Douglas E. Brandt
• 刊名：Organometallics
• 出版年：2012
• 出版时间：June 25, 2012
• 年：2012
• 卷：31
• 期：12
• 页码：4619-4622
• 全文大小：248K
• 年卷期：v.31,no.12(June 25, 2012)
• ISSN：1520-6041

文摘

Equilibrium constants and rates have been determined for the isomerization of the linkage isomers (OC)₅W[魏¹-PPh₂CH₂P(p-tolyl)₂] (5) and (OC)₅W[魏¹-P(p-tolyl)₂CH₂PPh₂] (6). It is proposed that this intramolecular exchange involves a nucleophilic attack of the pendant phosphine on a cis carbonyl group, followed by ring opening and a 1,2-shift.