CRYSTAL-STRUCTURE OF THE ORTHOPHOSPHATE RBBAPO4

被引:11
作者
ELAMMARI, L [1 ]
ELOUADI, B [1 ]
机构
[1] UNIV KARLSRUHE,INST KRISTALLOG,W-7500 KARLSRUHE,GERMANY
关键词
D O I
10.1016/0925-8388(92)90651-O
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
RbBaPO4 single-crystals were prepared by the flux method. The X-ray diffraction patterns show that this compound crystallizes in the orthorhombic system with Pnma space group and the following unit cell parameters: a = 7.812(2) angstrom, b = 5.740(1) angstrom, c = 10.056(2) angstrom, Z = 4. RbBaPO4 is isostructural with KBaPO4 which derives from the glaserite, where potassium and sodium are substituted by rubidium and barium respectively. The structure is formed by regular PO43- tetrahedra surrounding the Rb+ and Ba2+ cations in ten-fold and nine-fold coordinations respectively.
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页码:99 / 101
页数:3
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