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通过配基置换反应合成出两个新的三核钼簇合物[Mo_3S_4(DTC)_4(DMF)](EtOH(1)和[Mo_3S_4-(DTC)_4(Py)](Py)_2(H_2O)(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PI,晶胞参数:a=10.624(5),b=11.373(2),c=19.216(5)A;α=87.92(2),β=79.89(3),r=69.44(3);Z=2。簇合物2的空间群为PI,晶胞参数:a=11.505(2),b=11.945(1),c=18.974(2)A;α=99.18(1),β=94.82(1),r=93.84(1)°;Z=2。结构分析结果表明,两个簇合物的簇胳均是{Mo_3S_4}~(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。
Two novel trinuclear molybdenum clusters [Mo_3S_4 (DTC) _4 (DMF)] (EtOH (1) and [Mo_3S_4- (DTC) _4 (Py)] (Py) _2 The crystal structure of these two clusters was determined by X-ray diffraction. The space group of cluster 1 was PI with unit cell parameters: a = 10.624 (5), b = 11.373 (2) α = 87.92 (2), β = 79.89 (3), r = 69.44 (3); Z = 2. The space group of cluster 2 is PI and the unit cell parameters are as follows: a = 11.505 Α = 99.18 (1), β = 94.82 (1), r = 93.84 (1) °, and Z = 2. The results of structural analysis show that, The clusters of the two clusters are {Mo_3S_4} ~ (4+) triple-core molybdenum clusters. The effects of the ligands on the Mo-Mo bonds and the regularities of ligand displacement reactions are discussed .