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

doi:10.1021/ja408080z

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

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

82 Scopus citations

Abstract

A dinuclear Co complex with bis(pyridyl)pyrazolato (bpp^-) and terpyridine (trpy) ligands, [Co^III₂(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 ^IICo^III-hydride complex, and the further protonation of the hydride by trifluoroacetic acid yields hydrogen quantitatively. The kinetic study together with the detection of the Co^IICo^III-hydride complex revealed the mechanism of the hydrogen production by the reaction of 1⁺ with trifluoroacetic acid.

Original language	English
Pages (from-to)	15294-15297
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	135
Issue number	41
DOIs	https://doi.org/10.1021/ja408080z
State	Published - 16 Oct 2013

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

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.",

author = "Sukanta Mandal and Shinya Shikano and Yusuke Yamada and Lee, {Yong Min} and Wonwoo Nam and Antoni Llobet and Shunichi Fukuzumi",

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language = "English",

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T1 - Protonation equilibrium and hydrogen production by a dinuclear cobalt-hydride complex reduced by cobaltocene with trifluoroacetic acid

AU - Mandal, Sukanta

AU - Shikano, Shinya

AU - Yamada, Yusuke

AU - Lee, Yong Min

AU - Nam, Wonwoo

AU - Llobet, Antoni

AU - Fukuzumi, Shunichi

PY - 2013/10/16

Y1 - 2013/10/16

N2 - 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.

AB - 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.

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U2 - 10.1021/ja408080z

DO - 10.1021/ja408080z

M3 - Article

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AN - SCOPUS:84886919658

SN - 0002-7863

VL - 135

SP - 15294

EP - 15297

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 41

ER -

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

Abstract

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