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Influence of tertiary phosphanes on the coordination configurations and electrochemical properties of iron hydrogenase model complexes: Crystal structures of (mu-S2C3H6)Fe-2(CO)(6-n)L-n (L = PMe2Ph, n=1, 2; PPh3 P(OEt)(3), n=1)
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2005 (English)In: European Journal of Inorganic Chemistry, ISSN 1434-1948, E-ISSN 1099-1948, no 12, 2506-2513 p.Article in journal (Refereed) Published
Abstract [en]

A series of mono- and disubstituted diiron complexes [(mu-pdt)-Fe-2(CO)(5)L] [pdt = 1,3-propanedithiolato; L = PMe3 (2), PMe2Ph (3), PPh3 (4), P(OEt)(3) (5)] and [(mu-pdt)Fe-2(CO)(4)L-2] [L = PMe2Ph (6), PPh3 (7), P(OEt)3 (8)] were prepared as Fe-only hydrogenase-active-site models by controllable CO displacement of [(mu-pdt)Fe-2(CO)(6)] by tertiary phosphanes. The coordination configurations of 3-6 were characterized by X-ray crystallography. Disubstituted diiron complex 6 features an apical/apical coordination mode, instead of the typical transoid basal/basal configuration. The electrochemistry of 2-6 and 8 was studied by cyclic voltammetry to evaluate the effects of different tertiary phosphane ligands on the redox properties of the iron atoms of model complexes.

Place, publisher, year, edition, pages
2005. no 12, 2506-2513 p.
Keyword [en]
binuclear iron complexes, bioinorganic chemistry, carbonyl displacement, Fe-only hydrogenase, P ligands, fe-only hydrogenase, metal-carbonyl derivatives, active-site models, ditertiary phosphine, exchange, ligand, activation, catalysis, monoxide, stibine
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-14856DOI: 10.1002/ejic.200400947ISI: 000230068200028ScopusID: 2-s2.0-21244494006OAI: diva2:332897

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Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2014-12-03Bibliographically approved

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Sun, Licheng C.
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