中文摘要：

在室温酸性条件下，利用高负电性的表面分布有20个{Mo9O9}型纳米孔道的无机富勒烯囊状阴离子[{（Mo^Ⅵ）Mo5^ⅥO21（H2O）6}12{Mo2^ⅤO4（SO4）}30]^72-与胍基乙酸反应，得到了表面分布有20个{Mo6O6}型纳米孔道的由102个Mo及氧原子组成的[{（Mo）Mo5O21（H2O）4 SO4}12{Mo^ⅤO（H2O）}30]^12-小无机富勒烯囊状阴离子。通过单晶X射线衍射、元素分析、FTIR、UV-Vis、TG-DTA、ESR等手段对其进行了表征。该化合物属于三斜晶系，P1^-空间群，晶胞参数α=2．5377（5）nm，b=2．5932（5）nm，c=3．9547（8）nm，α=83．58（3）°，β=86．15（3）°，γ=75．55（3）°，V=25．023（9）nm^3。利用脉冲时间为5ns的532nm激光通过Z-扫描实验得到该化合物的三阶非线性折射率γ=-3．29×10^-18m^2／W，三阶非线性极化率X^（3）1．04×10^23 m^2·V^-2，表明该化合物具有较强的自散焦三阶非线性光学效应。

英文摘要：

Abstract A small spherical inorganic fullerene nano-capsule anion of a formula [{（Mo^Ⅵ）Mo5^ⅥO21（H2O）6}12{Mo2^ⅤO4（SO4）}30]^12-bearing 20 {Mo6O6}-type rings/channels built up from 102 Mo atoms and O at-oms were synthesized by reacting a highly charged spherical inorganic fullerene nano-capsule anion with the formula ^ⅥO21（H2O）6}12{Mo2^ⅤO4（SO4）}30]^72-bearing 20 {Mo9O9}-type rings/channels with guanidineacetic acid under acidic conditions at room temperature. The crystal structure of the resulted compound were characterized by X-ray single-crystal diffraction, elemental analysis, TG-DTA analysis and FTIR,UV-Vis, and ESR spectrascopies. It crystallizes in a triclinic system space group P^1,α=2.5377（5）nm,b=2.5932（5）nm,c=3.9547（8）nm,α=83.58（3）°,β=86.15（3）°,γ=75.55（3）°,V=25.023（9）nm^3.Meanwhile, its third-order nonlinear optical properties were studied using Z-scan technique with 5 ns laser pulse at λ =532nm.The third-order nonlinear susceptibility X^（3）=-1.04×10^-23m^2·Ⅴ^-2,showing strong nonlinear self-defocusing refractive effects.