SYNTHESIS AND CRYSTAL-STRUCTURE OF CA(VO)2(PO4)2

被引:50
作者
LII, KH [1 ]
CHUEH, BR [1 ]
KANG, HY [1 ]
WANG, SL [1 ]
机构
[1] NATL TSING HUA UNIV,DEPT CHEM,HSINCHU 300,TAIWAN
关键词
D O I
10.1016/0022-4596(92)90290-C
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A new phosphate, Ca(VO)2(PO4)2, was synthesized hydrothermally and its structure was determined from single-crystal X-ray diffraction data. It crystallizes in the noncentrosymmetric orthorhombic space group Fdd2 with a = 11.795(4), b = 15.784(6), c = 7.190(4)Å, Z = 8, and R = 0.0346. The structure consists of infinite chains of trans-corner-sharing VO6 octahedra cross-linked by phosphate groups to form a 3-dimensional network. These chains have alternating short and long V{single bond}O bonds. The network contains intersecting channels where the Ca2+ cations are located. The structure is compared with those of the AVOPO4 (A =alkali metal) family. © 1992 Academic Press, Inc. All rights reserved.
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页码:72 / 77
页数:6
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