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以Fe(SR)_6为桥的系列钼铁硫双立方烷化合物(Et_4N)_4[(MoFe_3S_4(SR)_3)_2Fe(SR)_6],R=ph,o—tol,m—tol和p—tol的磁极矩和~1H—NMR数据作了报导和分析,并与类似的化合物作比较,讨论了它们的电子结构和磁结构。在类立方烷单元[MoFe_3S_4]中未配对电子有明显的离域性,过渡金属原子之间有很强的反铁磁偶合作用。整个分子形成三个基本上相互独立的磁性中心。
A series of molybdenum iron sulfur bis-cubic compounds (Fe_3S_4 (SR) _3) _2Fe (SR) _6] bridged with Fe (SR) tol magnetic moment and ~ 1H-NMR data reported and analyzed, and compared with similar compounds to discuss their electronic structure and magnetic structure. The unpaired electrons in the quaternary alkane unit [MoFe_3S_4] have obvious delocalization and strong anti-ferromagnetic coupling between the transition metal atoms. The whole molecule forms three essentially independent magnetic centers.