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化学学报
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化学学报 ›› 2001, Vol. 59 ›› Issue (2): 274-278. 上一篇    下一篇

研究论文

新型磷酸钒孔道结构化合物(H3NCH2CH2NH3)3- [ (VO)4(PO4)2 (HPO4)4]的水热 合成及结构表征

杜洪兵;廖立兵;杨赞中;马哲生;熊明   

  1. 中国地质大学材料科学与工程学院
  • 发布日期:2001-02-15

Hydrothermal synthesis and structure characterization of a novel open-framework vanadium phosphate (H3NCH2CH2NH3)3 [ (VO)4(PO4)2(HPO4) 4

Du Hongbing;Liao Libing;Yang Zanzhong;Ma Zhesheng;Xiong Ming   

  • Published:2001-02-15

PDF

486

被引次数

38

以有机分子乙二胺作为模板剂合成了新型磷酸钒孔道化合物(H3NCH2CH2NH3)3^-[(VO)4(PO4)2(HPO4)4，并通过X射线单晶衍射实验进行了结构表征，晶体学数据为：C2/c,a=1.8505(9)nm,b=0.7089(4)nm,c=2.3304(10)nm,β=96.43(3)°,V-3.038(3)nm^3,Z=8,R=0.067,Rw^b=0.1635,该化合物具有非常独特和规整的二维孔道骨架结构，进一步的晶体化学研究表明该化合物为一新的VPO物相。

关键词: 磷酸盐, 钒化合物, 钒酰络合物, 孔道, 晶体结构, 水热法, 模板, 结构表征

A novel ehtylenediamine templated open- framework vanadium phosphate (H3NCH2CH2NH3)3- [ (VO)4(PO4)2(HPO4)4 has been hydrothemally synthesized and characterized by single-crystal X-ray diffraction. Green needle- like compound crystallized in monoclinic space group C2/c with a=1.8505(9) nm,b=0.7089(4) nm, c=2.3304(10) nm, β=96.43 (3)°, V-3.038(3) nm^3,Z=8, R=0.067 for 1912 unique reflections, The structure consists of layers constructed of corner- sharing V(Ⅳ) octahedra, V( Ⅳ) trigonal bipyramids, (PO4)^3- and (HPO4)^2- tetrahedra, which are held together by hydrogen bonding interaction to form the tunnels paralleled to the c axis and the (110) direction. Studies of crystal structure and crystal chemistry shows that this compound is a new VPO phase with an unique and topotactic two dimensional open framework structure.

Key words: PHOSPHATE, VANADIUM COMPOUNDS, VANADYL COMPLEX, HOLE CHANNELS, CRYSTAL STRUCTURE, HYDRO-THERMAL METHOD, FORMWORK, STRUCTURE CHARACTERISTICS

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