HYDROTHERMAL SYNTHESIS AND CRYSTAL-STRUCTURE OF [NI(H2O)4][VO(PO4)]2, A NICKEL(II) VANADYL(IV) PHOSPHATE

被引:26
|
作者
HAUSHALTER, RC [1 ]
SOGHOMONIAN, V [1 ]
CHEN, Q [1 ]
ZUBIETA, J [1 ]
机构
[1] SYRACUSE UNIV,DEPT CHEM,SYRACUSE,NY 13244
关键词
D O I
10.1006/jssc.1993.1243
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The new M2+/V4+/P/O phase [Ni(H2O)4][VO(PO4)]2 was prepared by hydrothermal synthesis and characterized by X-ray crystallography and thermogravimetric analysis. Crystal data: tetragonal space group I 4/mmm, a = 6.251(1)Å, c = 13.338(3)Å, V = 521.2(3)Å3, Z = 2, Dcalc = 2.845 g/cm3; structure solution and refinement based on 176 reflections with I0 ≥ 3σ(I0) (MoKα radiation, λ = 0.71073Å) converged at R = 0.0564. The structure consists of {VO(PO4)} layers, constructed from VO5 square pyramids and PO4 tetrahedra, linked by NiO6 octahedra. The structure is distinct from that of Ni0.5[VO(PO4)] · 1.5H2O, which exhibits a three-dimensional network structure with tunnels accommodating the aquo ligands. © 1993 Academic Press, Inc.
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页码:512 / 519
页数:8
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