THE CRYSTAL-STRUCTURE OF A NEW BORON SELENIDE, B12SE2-XBX

被引：16

作者：

BOLMGREN, H

LUNDSTROM, T

机构：

[1] Institute of Chemistry, S-751 21 Uppsala

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 202卷

基金：

瑞典研究理事会;

关键词：

D O I：

10.1016/0925-8388(93)90520-W

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：

A new boron selenide with the approximate composition B12SeB was prepared. This compound was found to crystallize in the B6P-type structure with a = 5.9041(4) angstrom and c = 11.947(1) angstrom. The space group is R3mBAR. Boron atoms occupying two 18h positions form an icosahedral network, while selenium atoms and boron atoms occupy position 6c, and are situated in the elongated hole formed along the trigonal axis. No substitution of selenium atoms for boron atoms occurs within the icosahedra. The structure refinement was performed using the Rietveld method on X-ray powder diffraction data. The final Bragg and weighted profile R-values obtained were 0.0582 and 0.130 respectively.

引用

页码：73 / 76

页数：4

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