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在国内首次采用结构相关法分析了28个晶体结构中所含44个Mo(L)_5片断。分子几何的定义见图1.五配位的化合物包括两个构型:三方双锥体(TBP)和四方单锥体(SQP)多面体中面间交角(二面角δ_(ij))的定义如图2.配位原子编号的优先次序为L_1和L_5间含有最大键角θ_(15),且d_5>d_1(d_i为键长增量,为晶体结构中实际测得的键长减去标准键长而得,标准键长的数值取自文献),L_2和L_4含有次大的键角θ_(24),另一个则标为L_3.
For the first time in China, 44 Mo (L) _5 fragments contained in 28 crystal structures were analyzed by structure-related method. The definition of molecular geometry is shown in Figure 1. The pentacoordinated compound includes two configurations: the definition of the inter-face cross (dihedral angle δ_ (ij)) in the tripartite bipyramids (TBP) and tetragonal mono-pyramidal (SQP) As shown in Figure 2. The priority order of coordination atom numbers is the maximum bond angle θ_ (15) between L_1 and L_5, and d_5> d_1 (d_i is the bond length increment, which is the actual measured bond length minus the standard in the crystal structure The keys are derived from the literature, L_2 and L_4 contain the second largest bond angle θ_ (24) and the other one is labeled as L_3.