高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (5): 779.

• 研究快报 • 上一篇    下一篇

一种新颖的六帽Keggin型钼钒砷酸盐--(H3O)3[AsMo12O40(VO)6]·6H2O的水热合成和晶体结构

郝娜1, 李阳光1, 沈恩洪1, 王恩波1, 鹿颖1, 段颖波2   

  1. 1. 东北师范大学化学学院, 长春 130024;
    2. 东北制药总厂, 沈阳 110026
  • 收稿日期:2002-12-03 出版日期:2003-05-24 发布日期:2003-05-24
  • 通讯作者: 王恩波(1936年出生),男,教授,博士生导师,从事多金属氧酸盐材料研究.E-mail:wangenbo@public.cc.jl.cn E-mail:wangenbo@public.cc.jl.cn
  • 基金资助:

    国家自然科学基金(批准号:20171010)

Hydrothermal Synthesis and Crystal Structure of a Novel Hexacapped Keggin-type Molybdovanadoarsenate (H3O)3[AsMo12O40(VO)6]·6H2O

HAO Na1, LI Yang-Guang1, SHEN En-Hong1, WANG En-Bo1, LU Ying1, DUAN Ying-Bo2   

  1. 1. Faculty of Chemistry, Northeast Normal University, Changchun 130024, China;
    2. Northeast General Pharmaceutical Factory, Shenyang 110026, China
  • Received:2002-12-03 Online:2003-05-24 Published:2003-05-24

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摘要： 近年来,含有Keggin结构的杂多酸以其优异的结构可修饰性及其在催化、功能材料和医药等方面的潜在应用而引起人们广泛的研究兴趣.在这一领域中,众多过渡金属取代的Keggin型杂多化合物,尤其是含有钒和铝的多金属氧酸盐由于其独特的电磁特性及结构特点而倍受关注.但迄今为止,只有少数带帽Keggin型结构的杂多阴离子被报道.这些Keggin阴离子通常具有低的V/Mo.

关键词: 钼钒砷酸盐, 水热合成, 晶体结构, 六帽Keggin型结构

Abstract: Anovel molybdovanadoarsenate(H3O)3[AsMo12O4o(VO)6] · 6H2O has been hydrothermally synthesized and structurally characterized by elemental analyses, cerimetric titration, EPR, and single crystal X-ray diffraction. The compound crystallizes in the triclinic system, space group PI with a=1. 2629(3) nm, b=1. 2635(3) nm, c=l. 7672(4) nm, a=91. 01(3)°, β=89. 98(3)°, 7=90. 00(3)°, V=2. 8198(10) nm3, Z=2, R1= 0. 0955, wR2=0. 1788. The polyoxoanion exhibits a hexacapped a-Keggin-type structure, in which six (VO5) square pyramids were distributed on the surface of (AsMo12O40) unit and made the bridge-oxygen (Ob, Oc) atoms of the a-Keggin-type polyoxoanion occupied.

Key words: Molybdovanadoarsenate, Hydrothermal synthesis, Crystal structure, Hexacapped Keggin

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