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A New Dinuclear Ruthenium Complex as an Efficient Water Oxidation Catalyst
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic 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 Ce-IV as the chemical oxidant was found to be ca. 1700. The mass spectroscopic analysis of the isotopomer distribution in oxygen evolved from O-18-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.
Keyword [en]
oxygen-evolving complex, photosystem-ii, dimanganese complex, molecular, dioxygen, ru complexes, blue dimer, ligands, mechanisms, evolution, model
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-18320DOI: 10.1021/ic802052uISI: 000264759500004Scopus ID: 2-s2.0-64349096014OAI: oai:DiVA.org:kth-18320DiVA: diva2:336366
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Duan, LeleSun, Licheng

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