Structure determination of the α=3, β=6 term of the (A3B2O6)α(A3B3O9)β homologous series (A = Ba, B=Rh) by a combination of powder X-ray diffraction and electron microscopy

被引：0

作者：

Boulahya, K

Hernando, M

Varela, A

González-Calbet, JM ^{[1
]}

Parras, M

Amador, U

Martínez, JL

机构：

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

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

[3] CSIC, Inst Ciencia Mat, Madrid 28049, Spain

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2002年 / 04期

关键词：

one-dimensional oxides; X-ray diffraction; electron diffraction; electron microscopy;

D O I：

10.1002/1099-0682(200203)2002:43.0.CO;2-Y

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The alpha = 3, beta = 6 term of the series (A(3)B(2)O(6))(alpha) (A(3)B(3)O(9))(beta) has been synthesized in polycrystalline form. The structural characterization by powder X-ray diffraction, electron diffraction and high-resolution electron microscopy indicates that this material is isostructural with Ba9Co8O24. In the structure, seven face-sharing octahedra alternate with a trigonal prism defining chains running parallel to the c axis of a rhombohedral unit cell (R3c), with parameters a = 1.00766(4) nm and c = 4.1571(2) nm. The structural refinement shows the presence of a small percentage of Rh vacancies leading to the composition Ba9Rh7.92O24. Pauli paramagnetic behaviour is observed. ((C) Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)

引用

页码：805 / 810

页数：6

共 29 条

[1] THE AUTOMATIC SEARCHING FOR CHEMICAL-BONDS IN INORGANIC CRYSTAL-STRUCTURES [J].