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Na_6V_(10)O_(28)·12H_2O的合成与结构
引用本文:徐家宁,吴锵金.Na_6V_(10)O_(28)·12H_2O的合成与结构[J].结构化学,1996,15(3):253-259.
作者姓名:徐家宁  吴锵金
作者单位:吉林大学化学系,中国科学院福建物质结构研究所
基金项目:国家自然科学基金委员会和结构化学国家重点实验室资助
摘    要:合成并测定了十钒酸盐Na_6V_(10)O_(28)·12H_2O的单晶结构。晶体属单斜晶系,P2_1/n群空间,a=12.019(2),b=17.154(2),c=18.178(6),β=106.29(2)°,V=3579(1),M_r=1287.5,F(000)=2560,μ=25,44cm ̄(-1),Z=4,D_c=2.38g·cm(-3)。结构由重原子法解出,全矩阵最小二乘法修正至R=0.064,R_w=0.083。V_(10)簇阴离子可以看成由10个VO_6变形八面体形成,其中氧原子有4种类型:端氧、二桥氧、三桥氧和六桥氧。结果表明,阳离子相同但结晶水的数目不同时,十钒酸盐的晶系和空间群不同。

关 键 词:十钒酸盐,合成,单晶结构

Synthesis and Crystal Structure of Na_6V_(10)O_(28)·12H_2O
Xu Jia-Ning,Yang Guo-Yu, Sun Hao-Ran, Wang Tie-Gang, Xu Ji-Qing.Synthesis and Crystal Structure of Na_6V_(10)O_(28)·12H_2O[J].Chinese Journal of Structural Chemistry,1996,15(3):253-259.
Authors:Xu Jia-Ning  Yang Guo-Yu  Sun Hao-Ran  Wang Tie-Gang  Xu Ji-Qing
Abstract:The title compound was synthesized from the system of NaOH-H_2MoO_4-HCl-V_2O_5.The crystals are monoclinic with space group P2_1/n and have a unit cell with a=12.019 (2) ,b=17.154(2),c= 18.178(6),β=106. 29(2)°,V=3579(1), M_r=1287.5,F(000) =2560,μ=25.44 cm ̄(-1),Z=4,D_c= 2. 38 g·cm ̄(-3). The structure was solved by heavy atomic method and refined by full-matrix least-squares method to R= 0. 064,R_w=0.083. The cluster anion is formed by 10 distorted VO_6 octahedra and there are four types of oxygen atoms: apical oxygen and three kinds of bridge oxygen atoms which are coordinated to two,three and six vanadium atoms respectively.
Keywords:decavanadate  synthesis  crystal structure  
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