The oxycarbonate Ba3Co2O6(CO3)0.60 with a 2H-ABO3-related structure

被引：19

作者：

Boulahya, K

Amador, U

Parras, M

González-Calbet, JM ^{[1
]}

机构：

[1] Univ Complutense, Fac Ciencias Quim, Dept Quim Inorgan, E-28040 Madrid, Spain

[2] Univ San Pablo, Fac Ciencias Expt & Tecn, Dept Quim Inorgan & Mat, Madrid 28668, Spain

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 04期

关键词：

D O I：

10.1021/cm991122x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The crystal structure Of Ba3Co2O6(CO3)(0.60) has been determined by means of X-ray, neutron and electron diffraction, and high-resolution electron microscopy. This compound has a hexagonal symmetry (space group P (6) over bar) and lattice parameters a = 0.9683(1) and c = 0.95180(8) nm related to the 2H-ABO(3) by means of the expression a = a(2H)(3)(1/2) and c = 2c(2H) It can be described from the ordered intergrowth of two blocks, [Ba2Co2O6](delta-) and [Ba(CO3)(0.60)](delta+), alternating along the a-axis. The first block corresponds to two 2H-like rods and the second one can be related to the BaCO3 aragonite-type structure. Neutron diffraction data elucidate the relative orientation of carbonate groups along c-axis in the aragonite-like blocks.

引用

页码：966 / 972

页数：7

共 16 条

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