(Me_4N)[Mo_3(μ_3-O)(μ-Cl)_3(μ-O_2CCH_2Cl)_3Cl_3]三核钼簇合物的合成、结构及电化学研究

STUDY ON THE SYNTHESIS, CRYSTAL STRUCTURE AND ELECTROCHEMISTRY OF THE TRINUCLEAR MOLYBDENUM CLUSTER COMPOUND, (Me 4N)[Mo 3(μ 3 O)(μ Cl) 3(μ O 2CCH 2Cl) 3Cl 3]

本文测定了三核钼簇合物（Ｍｅ４Ｎ）［Ｍｏ３（μ３Ｏ）（μＣｌ）３（μＯ２ＣＣＨ２Ｃｌ）３Ｃｌ３］的晶体结构，该晶体属于正交晶系，空间群Ｐ２１２１２１，晶胞参数：ａ＝１２．６３７５（９），ｂ＝１８．８９４（４），ｃ＝１０．７３３（４），Ｍｒ＝８７１．１５，Ｚ＝４，Ｄｏ＝２．２６ｇ／ｃｍ３。晶体属离子型，其簇阴离子是由一个μ３Ｏ原子桥连于准等边三角形排布的三核钼簇骼构成，具有接近Ｃ３Ｖ的对称性。其中ＭｏＭｏ和Ｍｏ（μ３Ｏ）平均键长分别为２５７７和１９８０。同时利用循环伏安法测定了该簇合物在ＣＨ３ＣＮ溶剂中的氧化还原电位。

The crystal structure of the title cluster was determined in this paper. It belongs to the orthorhombic system, space group P 2 12 12 1, with crystal cell parameters: a =12.6375(9), b=18.894(4), c=10.733(4) , M r=871.15, Z=4, D c=2.26 g/cm 3. The results reveal that it belongs to a discrete ionic compound. Three molybdenum atoms of the cluster form a approximately equilateral triangle with Mo Mo bond length (av., 2.577). One (μ 3 O)atom is coordinated to the three Mo atoms together, forming a mono capped cluster skeleton, with Mo (μ 3 O) bond distance (av., 1.980). The symmetry of the cluster is approximately C 3v . The redox potential of the title cluster was measured by the cyclic voltammetry in acetonitrile solvent. [WT5”HZ〗