Chemically Reversible Four-Electron Oxidation and Reduction Utilizing Two Inorganic Functional Groups

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• 作者：Michael Nippe ; Samuel M. Goodman ; Charles G. Fry ; John F. Berry
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：March 9, 2011
• 年：2011
• 卷：133
• 期：9
• 页码：2856-2859
• 全文大小：766K
• 年卷期：v.133,no.9(March 9, 2011)
• ISSN：1520-5126

文摘

Four-electron oxidation of the quadruply bonded W₂(II,II) compound W₂(2,2鈥?dipyridylamide)₄, 1, results in the formation of a novel, diamagnetic ditungsten terminal oxo compound [W₂O(2,2鈥?dipyridylamide)₄]²⁺, 2. In contrast to the chemical inertness of mononuclear tungsten oxo species, 2 undergoes a four-electron reduction including oxygen-atom transfer in reactions with excess tri-tert-butylphosphine in acetonitrile to recover 1. This unusual chemically reversible multielectron reactivity is ascribed to the cooperation of W鈭扥 and W鈭扺 multiple bonding.