POWDER NEUTRON-DIFFRACTION STUDY OF PYROLUSITE, BETA-MNO2

被引：90

作者：

BOLZAN, AA ^{[1
]}

FONG, C ^{[1
]}

KENNEDY, BJ ^{[1
]}

HOWARD, CJ ^{[1
]}

机构：

[1] AUSTRALIAN NUCL SCI & TECHNOL ORG,MENAI,NSW 2234,AUSTRALIA

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 1993年 / 46卷 / 06期

关键词：

D O I：

10.1071/CH9930939

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The powder neutron diffraction pattern of pyrolusite, beta-MnO2 [P4(2)/mnm, No. 136, a = 4.4041(1), c = 2.8765(1) angstrom], has been refined by the Rietveld method to give values for both the oxygen position parameter u = 0.3046(1) and the anisotropic thermal parameters. The data confirm the MnO6 octahedra to be elongated with two long [1.894(1) angstrom] and four short [1.882(2) angstrom] Mn-O bond distances. The effect of the stereochemistry on the thermal vibrations is discussed.

引用

页码：939 / 944

页数：6

共 18 条

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