Single-crystal proton ENDOR studies of the [Fe4S4] 3+ cluster: determination of the spin population distribution and proposal of a model to interpret the 1H NMR …

JM Mouesca, G Rius, B Lamotte

Index: Mouesca; Rius; Lamotte Journal of the American Chemical Society, 1993 , vol. 115, # 11 p. 4714 - 4731

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Citation Number: 81

Abstract

Abstract: Proton ENDOR spectroscopy has been used in single crystals of the synthetic compound [N (CzDs)] 2 [Fe4S4-(SCH~ C~ DS)~], which is a good biomimetic model of the active sites of many four-iron-four-sulfur proteins. The eight protons of the four thiolate CH2 groups have been used in order to probe in detail the distribution of the unpaired electron spin population in a paramagnetic [Fe4S4I3+ center created by gamma irradiation in the ...