STRUCTURE AND MAGNETIC-BEHAVIOR OF BINUCLEAR COMPOUNDS CS3FES3, NA3FES3 AND NA3FESE3
STRUCTURE AND MAGNETIC-BEHAVIOR OF BINUCLEAR COMPOUNDS CS3FES3, NA3FES3 AND NA3FESE3
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DOI：
10.1016/0925-8388(92)90525-e
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发表时间：
1992-08-27
影响因子：
6.2
通讯作者：
MULLER, P
中科院分区：
文献类型：
--
作者：
BRONGER, W;RUSCHEWITZ, U;MULLER, P
由碳酸铯与铁和硫在825K的氢气中反应制备了CS3FeS3，并分离出有光泽的绿色晶体。结构研究揭示了以[Fe2S6]双四面体为特征单元的原子排列。磁化率随温度的变化与Fe(III)离子的中等自旋态(S=3/2)相一致。双核化合物Na3FeS3和Na3FeSe3也获得了相应的敏感性数据。在从单核[FeS4]络合物到1无穷大[FeS4/2]链的序列中，双核络合物中的力矩代表了从分子键到集体键的过渡。
CS3FeS3 was prepared by the reaction of caesium carbonate with iron and sulphur in a stream of hydrogen at 825 K, and isolated as glossy green crystals. Structural investigations revealed an atomic arrangement whose characteristic units are [Fe2S6] double tetrahedra. The temperature dependence of the magnetic susceptibilities is consistent with a medium spin state of the Fe(III) ions (S = 3/2). Corresponding susceptibility data were obtained for the binuclear compounds Na3FeS3 and Na3FeSe3. In the sequence from the mononuclear [FeS4] complex to the 1 infinity [FeS4/2] chain the moments in the binuclear complexes represent a connecting link showing the transition from molecular to collective bonding.