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[VMo3O4(O2CEt)8]2Na2(1),三斜晶系,P1空间群,a=12.977(7),b=14.070(6),c=12.338(8),α=109.81(4),β=117.20(4),γ=90.51(5)°,V=1848.83,Mr=2020.6,Dc=1.81g/cm3,Z=1,F(000),μ=12.9cm1(MoKα)对3742个可观测反射点(I>3σ(I))最终一致性因子为R=0.018,Rω=0.054。单晶结构分析表明,簇阴离子中两个[Mo3O4]4+单元通过两个"桥"金属V原子连接成一个奇特的环状结构,Mo-Mo平均键长为2.519(1),Mo…V间平均距离为3.654。簇阴离子通过Na+连成一个一维长链,Na原子与氧原子形成一个少见的五配位三角双锥结构,Na-O距离仅为2.312,Na-O间较强的相互作用以及无限长链的晶体结构很好地解释了簇合物(1)的稳定性和不溶性。
A = 12.977 (7), b = 14.070 (6), c = 12.338 (8), α = 109.81 (4), β = 117.20 (4), γ = 90.51 (5) °, V = 1848.83, Mr = 2020.6, Dc = 1.81g / cm3, Z = The final concordance factors of 3742 observable reflection points (I> 3σ (I)) with F (000) and μ = 12.9cm1 (MoKα) were R = 0.018 and Rω = 0.054. Single crystal structure analysis shows that the two [Mo3O4] 4+ units in the cluster anions are connected by a pair of “bridge” metal V atoms into a peculiar ring structure with an average Mo-Mo bond length of 2.519 (1). The average distance between V is 3.654. Cluster anions form a one-dimensional long chain through Na +. Na atom and oxygen atom form a rare five-coordinate triangular double cone structure with a Na-O distance of only 2.312, strong interaction between Na-O and infinite The long-chain crystal structure well explains the stability and insolubility of the cluster (1).