Protonation Equilibrium and Hydrogen Production by a Dinuclear Cobalt鈥揌ydride Complex Reduced by Cobaltocene with Trifluoroacetic Acid

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• 作者：Sukanta Mandal ; Shinya Shikano ; Yusuke Yamada ; Yong-Min Lee ; Wonwoo Nam ; Antoni Llobet ; Shunichi Fukuzumi
• 刊名：Journal of the American Chemical Society
• 出版年：2013
• 出版时间：October 16, 2013
• 年：2013
• 卷：135
• 期：41
• 页码：15294-15297
• 全文大小：284K
• 年卷期：v.135,no.41(October 16, 2013)
• ISSN：1520-5126

文摘

A dinuclear Co complex with bis(pyridyl)pyrazolato (bpp^{鈥?/sup>) and terpyridine (trpy) ligands, [CoIII₂(trpy)₂(渭-bpp)(OH)(OH₂)]4+ (14+), undergoes three-electron reduction by cobaltocene in acetonitrile to produce 1+, which is in the protonation equilibrium with the CoIICoIII鈥揾ydride complex, and the further protonation of the hydride by trifluoroacetic acid yields hydrogen quantitatively. The kinetic study together with the detection of the CoIICoIII-hydride complex revealed the mechanism of the hydrogen production by the reaction of 1+ with trifluoroacetic acid.}