Redox properties of iron-sulphur-nitrosyl complexes: Exploratory electrochemistry of mononuclear, dinuclear and tetranuclear complexes
作者:Joseph A. Crayston、Christopher Glidewell、Ronald J. Lambert
DOI:10.1016/s0277-5387(00)83981-9
日期:——
complexes [Fe2(SR)2(NO)4] (R = alkyl), to provide successively [Fe2(SR)2(NO)4]− and [Fe2(SR)2(NO)4]2−. The paramagnetic complexes [Fe2(SR)2(NO)4]−, which can also be prepared by chemical reduction of neutral [Fe2(SR)2(NO)4], have been characterized by ESR spectroscopy: the complexes [Fe2(SR)2(NO)4]2−, which are isoelectronic with the substitution-labile cobalt complexes [Co2(SR)2(NO)4], undergo ready
摘要循环伏安法显示中性配合物[Fe2(SR)2(NO)4](R =烷基)的两个可逆的单电子还原,依次提供[Fe2(SR)2(NO)4]-和[Fe2 (SR)2(NO)4] 2-。顺磁性配合物[Fe2(SR)2(NO)4]-,也可以通过化学还原中性[Fe2(SR)2(NO)4]制备,已通过ESR光谱表征:配合物[Fe2(与取代不稳定的钴配合物[Co2(SR)2(NO)4]等电的SR)2(NO)4] 2-易于与磷配体反应。双阴离子[Fe2S2(NO)4] 2-也表现出两个可逆的单电子还原,但对于[Fe2(S2O3)2(NO)4] 2-而言,只有第一个还原是可逆的。四核络合物[Fe4S3(NO)7]-经过三个可逆的单电子还原,生成[Fe4S3(NO)7] x-(x = 2、3和4)。对于所有这些复合体,氧化反应是复杂且不可逆的。中性顺磁性络合物[Fe(NO)(S2CNR2)2](R =烷基)均显