论文部分内容阅读
文献报道的三钼簇合物大多是配位对称的,而配位不对称的(包括配位空缺或称为配位不饱和的)在化学上更有意义,但报道甚少。最近我们合成了“松散”配位的三核钼簇合物若干个,其中簇合物{Mo_3(μ_3-S)(μ-S)_3[S_2P·(OEt)_2]_4(H_2O)}(1)和{Mo_3(μ_3-X)(μ-S)_3[S_2P·(OEt)_2]_4·SC(NH_2)_2}(2 X=1/2O+1/2S),已用X射线衍射法测定了晶体结构,发现不对称配位的Mo—L键较通常的长,显得“松散”,配基L可以被其他π-型中性配基置换,在化学上
Reported in the literature most of the three molybdenum cluster coordination symmetry, and coordination asymmetry (including coordination or vacancy or coordination) chemically more meaningful, but very few reports. Recently, we synthesized a number of “loosely” coordinated tri-nuclear molybdenum clusters, in which clusters {Mo_3 (μ_3-S) (μ-S) _3 [S_2P · (OEt) _2] _4 (H_2O)} 1) and {Mo_3 (μ_3-X) (μ-S) _3 [S_2P · (OEt) _2] _4 · SC (NH_2) _2} (2 X = 1 / 2O + 1 / 2S) The crystal structure was determined and it was found that the asymmetric coordination Mo-L bond was longer than usual and appeared “loose”. Ligand L could be displaced by other π-type neutral ligands, chemically