Water oxidation catalyzed by a new tetracobalt-substituted polyoxometalate complex: [{Co4(μ-OH)(H2O)3}(Si2W19O70)]11−

Guibo Zhu; Yurii V. Geletii; Paul Kögerler; Helmut Schilder; Jie Song; Sheri Lense; Chongchao Zhao; Kenneth I. Hardcastle; Djamaladdin G. Musaev; Craig L. Hill

doi:10.1039/C1DT11211B

Wateroxidation catalyzed by a new tetracobalt-substituted polyoxometalate complex: [{Co₄(μ-OH)(H₂O)₃}(Si₂W₁₉O₇₀)]¹¹⁻†

Guibo Zhu,^a Yurii V. Geletii,^a Paul Kögerler,^b Helmut Schilder,^b Jie Song,^a Sheri Lense,^a Chongchao Zhao,^a Kenneth I. Hardcastle,^a Djamaladdin G. Musaev^c and Craig L. Hill*^a

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^a Department of Chemistry, Emory University, Atlanta, GA, USA

^b Institut für Anorganische Chemie, RWTH Aachen University, Aachen, Germany

^c Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, GA
E-mail: chill@emory.edu
Fax: (+1)404-727-6076
Tel: (+1)404-727-6611

Abstract

A new polyoxometalate of earth adundant elements [{Co₄(μ-OH)(H₂O)₃}(Si₂W₁₉O₇₀)]¹¹⁻ has been synthesized, characterized and shown to be a water oxidation catalyst. The initial catalytic complex is unstable and slowly undergoes hydrolysis. The hydrolysis products have been isolated and characterized, and their catalytic water oxidation activity is assessed.

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Wateroxidation catalyzed by a new tetracobalt-substituted polyoxometalate complex: [{Co₄(μ-OH)(H₂O)₃}(Si₂W₁₉O₇₀)]¹¹⁻†

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Water oxidation catalyzed by a new tetracobalt-substituted polyoxometalate complex: [{Co₄(μ-OH)(H₂O)₃}(Si₂W₁₉O₇₀)]¹¹⁻

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