Terminal Ligand Assignments Based on Trends in Metal−Ligand Bond Lengths of Cubane-Type [Fe4S4]2+,+ Clusters
Terminal Ligand Assignments Based on Trends in Metal−Ligand Bond Lengths of Cubane-Type [Fe4S4]2+,+ Clusters
复制标题
基于古巴烷型 [Fe4S4]2+,+ 簇金属-配体键长趋势的末端配体分配
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
R. H. Holm
中科院分区：
文献类型：
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作者：
B. Segal;H. Hoveyda;R. H. Holm
总结了L = Cl-和RS-的[Fe4S4L4]2-，3-立方烷型簇中Fe−L键距离的变化趋势。制备了化合物（Et4N）3[Fe4S4(SH)4]·Et4NCl，并对其进行了结构表征。该簇和先前报道的（Ph4P）2[Fe4S4(SH)4]的Fe−SH键长度落在烷基和烯硫酸酯末端配体簇的范围内。在1,2-二氯乙烷/THF缓慢结晶后，化合物（Pr4N）2[Fe4S4(SH)4]发生氯代取代形成（Pr4N）2[Fe4S4Cl4]，可以通过其Fe - Cl距离来识别。最近归因于（Pr4N）2[Fe4S4(SH)4]的x射线结构是（Pr4N）2[Fe4S4Cl4]。
Trends in Fe−L bond distances in [Fe4S4L4]2-,3- cubane-type clusters with L = Cl- and RS- are summarized. The compound (Et4N)3[Fe4S4(SH)4]·Et4NCl was prepared and structurally characterized. The Fe−SH bond lengths of this cluster and previously reported (Ph4P)2[Fe4S4(SH)4] fall in the ranges for clusters with alkyl- and arenethiolate terminal ligands. Upon slow crystallization from 1,2-dichloroethane/THF, the compound (Pr4N)2[Fe4S4(SH)4] undergoes chloride substitution to form (Pr4N)2[Fe4S4Cl4], which may be identified by its Fe−Cl distance. An X-ray structure recently attributed to (Pr4N)2[Fe4S4(SH)4] is that of (Pr4N)2[Fe4S4Cl4].