Co7As2O12: A new cobalt arsenate with a spinelloid-type structure

被引：5

作者：

Barbier, J

机构：

[1] McMaster University, Department of Chemistry, Hamilton

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1997年 / 212卷 / 06期

关键词：

D O I：

10.1524/zkri.1997.212.6.445

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A new cobalt arsenate, Co7As2O12, has been synthesized under hydrothermal conditions. Its crystal structure has been determined by single crystal X-ray diffraction: Imma space group, n = 5.832(1) Angstrom, b = 18.041(4) Angstrom, c = 8.441(2) Angstrom, Z = 4, wR(F-2) = 0.096 for 2176 independent reflections. Co(7)AS(2)O(12) is isostructural with the spinelloid phase Il and with the mineral manganostibite, Mn7SbAsO12. Its fully ordered cation distribution on the octahedral and tetrahedral sites of the oxygen cubic close-packing, (Co5As)([6]) [(Co2As)O-[4](10)]O-2, has been rationalized in terms of a bond-valence analysis of the structure.

引用

页码：445 / 449

页数：5

共 41 条

[1] THE SYSTEM NIAL2O4-NI2SIO4 AT HIGH-PRESSURES AND TEMPERATURES - SPINELLOIDS WITH SPINEL-RELATED STRUCTURES [J].