Crystal growth of alkaline earth vanadates from hydroxide fluxes

被引：22
|
作者：
Mugavero, Samuel J., III [1 ]
Bharathy, M. [1 ]
McAlum, Jilian [1 ]
zur Loye, Hans-Conrad [1 ]
机构：
[1] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
来源：
SOLID STATE SCIENCES | 2008年 / 10卷 / 04期
基金：
美国国家科学基金会;
关键词：
barium vanadates; hydroxide flux; crystal structure; isolated VO4 tetrahedra;
D O I：
10.1016/j.solidstatesciences.2007.12.027
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
We report the crystal growth and structural characterization of four alkaline earth vanadates synthesized from alkali metal hydroxide flux reactions. The use of molten hydroxides has led to the preparation of the novel hydroxy apatites, A(5)(VO4)(3)(OH) (A = Sr, Ba), isolated from mixed NaOH/A(OH)(2) (A = Sr, Ba) flux reactions contained in sealed silver tubes. Ba-5(VO4)(3)(OH) and Sr-5(VO4)(3)(OH) crystallize in the hexagonal space group, P6(3)/m with a=10.4589(2) angstrom, c=7.8476(3) angstrom, V=743.43(3) angstrom(3) and a=10.0570(4) angstrom, c=7.4349(7) angstrom, V = 651.24(7) angstrom(3), respectively. The crystal structures consist of isolated VO4 tetrahedra separated by layers of Sr/BaOx polyhedra. In addition, we also report the crystal growth of KBaVO4 and Ba-3(VO4)(2) from hydroxide fluxes. (C) 2008 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：370 / 376
页数：7
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