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A New Dinuclear Ruthenium Complex as an  Efficient for Water Oxidation Catalyst
Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
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2009 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 48, no 7, 2717-2719 p.Article in journal (Refereed) Published
Abstract [en]

A dinuclear ruthenium complex, which acts as a molecular catalyst for water oxidation, has been synthesized and characterized. The electronic and electrochemical properties were studied by UV−vis spectroscopy and cyclic voltammetry. The oxidation potentials of the complex are significantly lowered by introducing a negatively charged carboxylate ligand, in comparison with those of the reported complexes that have neutral ligands. The catalytic activity of the complex toward water oxidation using Ce(NH4)2(NO3)6 as a chemical oxidant was investigated by means of an oxygen electrode and mass spectrometry. The turnover number of this catalyst with CeIV as the chemical oxidant was found to be ca. 1700. The mass spectroscopic analysis of the isotopomer distribution in oxygen evolved from 18O-labeled water indicates that O atoms in the evolved oxygen originate from water

Place, publisher, year, edition, pages
2009. Vol. 48, no 7, 2717-2719 p.
National Category
Physical Chemistry
Research subject
Physical Chemistry
URN: urn:nbn:se:su:diva-34776DOI: 10.1021/ic802052uISI: 000264759500004OAI: diva2:286544
Available from: 2010-01-14 Created: 2010-01-12 Last updated: 2011-07-06Bibliographically approved

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Åkermark, TorbjörnEriksson, LarsÅkermark, Björn
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Department of Physical, Inorganic and Structural Chemistry
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