A NOVEL MEANS OF SYNTHESIS FOR VANADIUM BRONZES - CRYSTAL-STRUCTURE OF BETA-AG0.33V2O5 - REFINEMENT OF THE CRYSTAL-STRUCTURE OF EPSILON-CU0.76V2O5

被引:14
作者
HAEIERDANZ, ML [1 ]
MULLER, U [1 ]
机构
[1] UNIV MARBURG,FACHBEREICH CHEM,W-3550 MARBURG,GERMANY
来源
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1993年 / 619卷 / 02期
关键词
SILVER VANADIUM BRONZE; COPPER VANADIUM BRONZE; SYNTHESIS; CRYSTAL STRUCTURE;
D O I
10.1002/zaac.19936190211
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Ag0.33V2O5 and Cu0.76V2O5 were obtained by heating equimolar mixtures of AgI + V2O5 (700-degrees-C) and CuI + V2O5 (525-degrees-C), respectively, in sealed quartz glass ampoules. In each case, one of the well-formed crystals served for an X-ray structure analysis. Ag0.33V2O5 has the structure known of the beta phase of the vanadium bronzes, i. e. layers of edge-sharing, distorted VO6 octahedra are liked by certain common octahedron vertices, the Ag atoms randomly occupy two positions with occupation probabilities of 0.5. CU0.76V2O5 has the previously determined structure of the epsilon phase, however, its space group is not cm hut C2/m.
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页码:287 / 292
页数:6
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