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Fe-S complexes containing five-membered heterocycles: novel models for the active site of hydrogenases with unusual low reduction potential
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2007 (English)In: Dalton Transactions, ISSN 1477-9226, E-ISSN 1477-9234, no 8, p. 896-902Article in journal (Refereed) Published
Abstract [en]

Three biomimetic 2Fe2S complexes [{(mu-SCH2)(2)NCH2(2-C4H3O)}](Fe-2(CO)(6)) (6a), [{(mu-SCH2)(2) NCH2(2-C4H3S)}](Fe-2(CO)(6)) (6b) and [{(mu-SCH2)(2)NCH2(5-Br-2-C4H2S)}Fe-2(CO)(6)] (6c) were prepared as models for the active site of Fe-only hydrogenase by the convergent process from [(mu-S-2)Fe-2(CO)(6)] and N,N-bis(hydromethyl)-2-furan and thiophene. The structures of these complexes were identified spectroscopically and crystallographically. The electrochemical behavior of the complexes 6a and 6c was unique as they showed catalytic proton reduction with a low reduction potential at -1.13 and -1.09 V vs Fc/Fc(+), respectively, in the presence of HClO4.

Place, publisher, year, edition, pages
2007. no 8, p. 896-902
Keyword [en]
coupled electron-transfer, only hydrogenases, iron hydrogenase, desulfovibrio-desulfuricans, electrochemical properties, photosystem-ii, proton, evolution, oxidation, coordination
Identifiers
URN: urn:nbn:se:kth:diva-16434DOI: 10.1039/b615037cISI: 000244691200013Scopus ID: 2-s2.0-33847069181OAI: oai:DiVA.org:kth-16434DiVA, id: diva2:334476
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Sun, Licheng

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