Structural characterization of NaMgH2F and NaMgH3

被引：89

作者：

Bouamrane, A

Laval, JP

Soulie, JP

Bastide, JP

机构：

[1] CNRS, UMR 6638, F-87060 Limoges, France

[2] Inst Natl Sci Appl Lyon, Lab Thermodynam Appl, F-69621 Villeurbanne, France

来源：

MATERIALS RESEARCH BULLETIN | 2000年 / 35卷 / 04期

关键词：

inorganic compounds; hydrides; X-ray diffraction; crystal structure;

D O I：

10.1016/S0025-5408(00)00249-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The direct reaction of hydrogen on a mixture of Na + Mg or NaF + Mg allowed for synthesis of NaMgH3 and NaMgH2F, respectively. Both phases were indexed with an orthorhombic unit cell with dimensions a = 546.34, b = 770.30, c = 541.08 pm for NaMgH3 and a = 547.59, b = 769.68, c = 540.31 pm for NaMgH2F. The crystal structures were refined by X-ray Rietveld refinement. They derive from the perovskite structure type by a Pmm --> Pnma distortion. In the hydridofluoride, H- and F- anions are equally distributed in the two anionic sites in a disordered way. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：545 / 549

页数：5

共 7 条

[1] ELABORATION OF DOUBLE HYDRIDES OF MAGNESIUM AND POTASSIUM VIA REACTION BETWEEN SOLIDS [J].