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Water Oxidation Catalyzed by a Dinuclear Cobalt–Polypyridine Complex
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
2014 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, no 52, 14499-14502 p.Article in journal (Refereed) Published
Abstract [en]

The dinuclear Co complex [(TPA)Co(µ-OH)(µ-O2)Co(TPA)](ClO4)3 (1, TPA=tris(2-pyridylmethyl)amine) catalyzes the oxidation of water. In the presence of [Ru(bpy)3]2+ and S2O82-, photoinduced oxygen evolution can be observed with a turnover frequency (TOF) of 1.4±0.1 mol(O2) mol(1)-1 s-1 and a maximal turnover number (TON) of 585 mol(O2)mol(1)-1. The complex is shown to act as a molecular and homogeneous catalyst and a mechanismis proposed based on the combination of EPR data and light-driven O2 evolution kinetics.

Place, publisher, year, edition, pages
2014. Vol. 53, no 52, 14499-14502 p.
Keyword [en]
dinuclear cobalt complexes, homogeneous catalysis, photocatalysis, water oxidation
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-239839DOI: 10.1002/anie.201406540ISI: 000346485800036OAI: oai:DiVA.org:uu-239839DiVA: diva2:775413
Funder
Swedish Energy AgencyKnut and Alice Wallenberg Foundation
Available from: 2015-01-02 Created: 2015-01-02 Last updated: 2017-12-05Bibliographically approved

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Mijangos, EdgarOtt, SaschaThapper, Anders

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