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Visible light-driven electron transfer and hydrogen generation catalyzed by bioinspired 2Fe2S complexes
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2008 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 47, no 7, 2805-2810 p.Article in journal (Refereed) Published
Abstract [en]

Complexes [{(mu-SCH2)(2)NCH2C6H5){Fe(CO)(2)L-1){Fe(CO)(2)L-2}] (L-1 = CO, L-2 = P(Pyr)(3), 2; L-1 = L-2 = P(Pyr)(3), 3) were prepared, which have the lowest reduction potentials for the mono- and double-CO-displaced diiron complexes reported so far. Hydrogen evolution, driven by visible light, was successfully observed for a three-component system, consisting of a ruthenium polypyridine complex, the biomimetic model complex 2 or 3, and ascorbic acid as both electron and proton donor in CH3CN/H2O. The electron transfer from photogenerated Ru(bPY)(3)(+) to 2 or 3 was detected by laser flash photolysis. Under optimal conditions, the total turnover number for hydrogen evolution was 4.3 based on 2 and 86 based on Ru(bPY)(3)(2+) in a three-hour photolysis.

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2008. Vol. 47, no 7, 2805-2810 p.
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URN: urn:nbn:se:kth:diva-17429DOI: 10.1021/ic702010wISI: 000254603900074Scopus ID: 2-s2.0-42449137463OAI: oai:DiVA.org:kth-17429DiVA: diva2:335473
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QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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