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Synthesis and Catalytic Water Oxidation Activities of Ruthenium Complexes Containing Neutral Ligands
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.ORCID iD: 0000-0003-1662-5817
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
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2011 (English)In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 17, no 34, 9520-9528 p.Article in journal (Refereed) Published
Abstract [en]

Two dinuclear and one mononuclear ruthenium complexes containing neutral polypyridyl ligands have been synthesised as pre-water oxidation catalysts and characterised by (1)H and (13)C NMR spectroscopy and ESI-MS. Their catalytic water oxidation properties in the presence of [Ce(NH(4))(2)(NO(3))(6)] (Ce(IV)) as oxidant at pH 1.0 have been investigated. At low concentrations of Ce(IV) (5 mm), high turnover numbers of up to 4500 have been achieved. An (18)O-labelling experiment established that both O atoms in the evolved O(2) originate from water. Combined electrochemical study and electrospray ionisation mass spectrometric analysis suggest that ligand exchange between coordinated 4-picoline and free water produces Ru aquo species as the real water oxidation catalysts.

Place, publisher, year, edition, pages
2011. Vol. 17, no 34, 9520-9528 p.
Keyword [en]
homogeneous catalysis, isotopic labeling, neutral ligands, ruthenium, water oxidation
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-41804DOI: 10.1002/chem.201100274ISI: 000294784400033Scopus ID: 2-s2.0-80051490625OAI: oai:DiVA.org:kth-41804DiVA: diva2:445124
Note
QC 20111003Available from: 2011-10-03 Created: 2011-10-03 Last updated: 2017-12-08Bibliographically approved

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Duan, LeleSun, Licheng

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