三核钼簇合物配基置换反应: 两个三核钼簇合物[Mo3S4(DTC)4(DMF)](EtOH)和[Mo3S4(DTC)4(Py)](Py)2(H2O)的合成和晶体结构研究

通过配基置换反应合成出两个新的三核钼簇合物Mo3S4(DTC)4(DMF)](EtOH)(1)和Mo3S4-(DTC)4(Py)](Py)2(H2O)(2). 用X射线衍射法测定了这两个簇合物的晶体结构.簇合物1的空间群为PT, 晶胞参数: A=10.624(5), b=11.373(2), c=19.216(5)埃;α=87.92(2), β=79.89(3), γ=69.44(3)°; Z=2. 簇合物2的空间群为PT, 晶胞参数:a=11.505(2), b=11.945(1), c=18.974(2)埃; α=99.18(1), β=94.82(1), γ=93.84(1)°; Z=2, 结构分析结果表明, 两个簇合物的簇胳均是{Mo3S4}^4^+的三核钼原子簇, 对簇合物中配基对Mo-Mo键的影响以及配基置换反应的规律性进行了讨论.

The replacement reaction of trinuclear molybdenum clusters: Synthesis and crystal structure of two molybdenum clusters [Mo3S4(DTC)4(DMF))](EtOH) and [Mo3S4(DTC)4(Py)](Py)2(H2O)

(HDTC = Et2NCS2H) were prepared by the ligand replacement reaction. The crystal structure of the 2 clusters have been determine by x-ray diffraction method. I and II belong to space group P1, Z = 4, 2, resp. I and II are trinuclear Mo clusters with the {Mo3S44+} cluster skeleton. The influence of the Mo-Mo bond by the ligands in this kind of cluster and the regularity of ligand replacement reaction are discussed.