一例夹心型混合价锑钼酸盐的合成、结构及性质  

Synthesis,Structure and Properties of a Sandwich-Type Polyoxomolybdate Containing Mixed-Valence Antimony

作　　者：杨宗斐 牟秋水 王亚平 马鹏涛[1] 王敬平[1] 牛景杨[1] YANG Zong-Fei;MU Qiu-Shui;WANG Ya-Ping;MA Peng-Tao;WANG Jing-Ping;NIU Jing-Yang(Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering,College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China)

机构地区：[1]河南大学化学化工学院

出　　处：《无机化学学报》2019年第11期2101-2107,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21371048,21671056);河南省自然科学基金(No.134300510035)资助项目

摘　　要：以(NH4)6Mo7O24·4H2O、Sb2O3和Sb2O5等为原料,利用常规水溶液法合成了一例结构新颖的含有混合价锑的杂多钼酸盐:[(CH3)4N]8Na41H17[(SbⅢ3O3)(SbⅤMo6O24)2]6·162H2O(1),并通过元素分析、红外光谱、热重分析和X射线单晶衍射等分析手段对化合物1进行了表征。化合物1含有夹心型的多酸阴离子簇[(Sb3O3)(SbMo6O24)2]11-,并进一步通过Na+连接形成二维结构。此外,我们还研究了该化合物的变色性质。当该化合物的粉末被加热或氙灯(300W)照射时,其颜色由淡黄色变为青黄色或棕褐色。A novel heteropolymolybdate containing mixed-valence antimony [(CH3)4N]8Na41H17[(SbⅢ3O3)(SbⅤMo6O24)2]6 ·162H2O (1) has been successfully synthesized by reaction of (NH4)6Mo7O24·4H2O, Sb2O3 and Sb2O5 in a conventional aqueous method. This structure was structurally characterized by single-crystal X-ray diffraction, TG analysis, PXRD and IR spectrum. The results show that compound 1 contains a sandwich polyoxoanion [(Sb3O3)(SbMo6O24)2]11-, and further forms a two-dimensional structure through Na+ connection. In addition, compound 1 also exhibits intriguing allochroic properties. It can change color from yellowy to cyan yellow/sepia when heated or irradiated by Xe lamp (full wave-band, P=300 W). CCDC: 1952793.

关 键 词：多金属氧簇 夹心型 晶体结构 变色性质 

分 类 号：O614.531[理学—无机化学]