A New Dinuclear Ruthenium Complex as an Efficient Water Oxidation Catalyst
2009 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 48, no 7, 2717-2719 p.Article in journal (Refereed) Published
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.
oxygen-evolving complex, photosystem-ii, dimanganese complex, molecular, dioxygen, ru complexes, blue dimer, ligands, mechanisms, evolution, model
IdentifiersURN: urn:nbn:se:kth:diva-18320DOI: 10.1021/ic802052uISI: 000264759500004ScopusID: 2-s2.0-64349096014OAI: oai:DiVA.org:kth-18320DiVA: diva2:336366
QC 201005252010-08-052010-08-052012-03-20Bibliographically approved