STRUCTURAL CHEMISTRY OF A(VOPO4)2.NH2O (A = ALKALI, ALKALINE-EARTH, AND TRANSITION-METALS)

被引:28
作者
LII, KH
机构
[1] Institute of Chemistry, Academia Sinica, Taipei
关键词
VANADIUM PHOSPHATE; SYNTHESIS; STRUCTURE;
D O I
10.1002/jccs.199200090
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Crystals of layered phosphate hydrates A(VOPO4)2.nH2O(A = metal cation) have been grown under hydrothermal conditions. All compounds except trihydrates Pb(VOPO4)2.3H2O and Ni(VOPO4)2 . 3H2O consist of layers of vanadium phosphorus oxide with metal cations and water molecules between the layers. The layer is a four-connected net in which corner-sharing vanadium oxygen polyhedra and phosphate tetrahedra alternate. Most phases crystallize in crystal symmetry lower than those prepared from redox intercalation reactions. Their crystal structures and the structural relationships with VOPO4 . 2H2O are discussed.
引用
收藏
页码:569 / 576
页数:8
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