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Diiron Complexes with a [2Fe3S] Core Related to the Active Site of [FeFe]H2ases

Abstract : Six-membered heterocycles, 1,4-dithiane and 1,4-thioxane, were treated with [Fe2(CO)6(μ-pdt)] (pdt = propanedithiolate) in order to synthesise [2Fe3S] complexes with well positioned heteroatoms as potential base. Monosubstituted compounds of general formula [Fe2(CO)5L(μ-pdt)] (L = 1,4-dithiane, 1,4-thioxane) were mainly obtained and characterised by 1H NMR, IR, elemental analysis and X-ray diffraction studies. Electrochemical behaviour of these monosubstituted derivatives was investigated by cyclic voltammetry. An original tetranuclear cluster with a [4Fe8S] core was also isolated as a minor product and structurally characterised.
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Kévin Charreteur, Jean-François Capon, Frederic Gloaguen, François Y. Pétillon, Philippe P. Schollhammer, et al.. Diiron Complexes with a [2Fe3S] Core Related to the Active Site of [FeFe]H2ases. European Journal of Inorganic Chemistry, 2011, 2011 (7), pp.1038 - 1042. ⟨10.1002/ejic.201000984⟩. ⟨hal-01577032⟩



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