Comparison of the reactivities of [Fe4S4(SPh)4]2- and [Fe2S2(SPh)4]2-

Article abstract of DOI:10.1248/cpb.41.208

The reactivities of the model complexes, [Fe₄S₄(SPh)₄]^2- (1) and [Fe₂S₂(SPh)₄]^2- (2), of nonheme iron-sulfur proteins were compared. Complex 1 catalyzed the oxidation of benzenethiol to diphenyl disulfide with the reduction of dioxygen to H₂O. Complex 2 did not catalyze it, but the reaction proceeded after an induction period during which complex 2 was converted to complex 1. In addition, complex 1 catalyzed the reduction of 1,4-dinitrobenzene to N-(4-nitrophenyl)hydroxylamine (21%) and 4-nitroaniline (16%) with the oxidation of benzenethiol to diphenyl disulfide, but complex 2 induced mainly the displacement of nitro group to phenylthio group to give 1-nitro-4-(phenylthio)benzene (92%). It was revealed that the reactivities of complex 1 and complex 2 are quite different.

Full text of DOI:10.1248/cpb.41.208

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