Protonation equilibrium and hydrogen production by a dinuclear cobalt-hydride complex reduced by cobaltocene with trifluoroacetic acid

Sukanta Mandal, Shinya Shikano, Yusuke Yamada, Yong Min Lee, Wonwoo Nam, Antoni Llobet, Shunichi Fukuzumi

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69 Scopus citations

Abstract

A dinuclear Co complex with bis(pyridyl)pyrazolato (bpp-) and terpyridine (trpy) ligands, [CoIII2(trpy) 2(μ-bpp)(OH)(OH2)]4+ (14+), undergoes three-electron reduction by cobaltocene in acetonitrile to produce 1+, which is in the protonation equilibrium with the Co IICoIII-hydride 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.

Original languageEnglish
Pages (from-to)15294-15297
Number of pages4
JournalJournal of the American Chemical Society
Volume135
Issue number41
DOIs
StatePublished - 16 Oct 2013

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