SITE DETERMINATION OF OXYGEN IN B6O BY OXYGEN K-ALPHA X-RAY-EMISSION SPECTROSCOPY

被引：28

作者：

KAWAI, J

MAEDA, K

HIGASHI, I

TAKAMI, M

HAYASI, Y

UDA, M

机构：

[1] TOHOKU UNIV,DEPT APPL PHYS,SENDAI,MIYAGI 980,JAPAN

[2] WASEDA UNIV,SCH SCI & ENGN,DEPT MAT SCI & ENGN,SHINJUKU KU,TOKYO 169,JAPAN

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.42.5693

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An electron-excited x-ray-emission spectrum of oxygen K is presented for boron suboxide B6O (isostructural with B13C2). The spectrum is compared with those calculated by the discrete-variation X (DV-X) method with various O-O distances as an adjustable parameter in the fixed icosahedral B12 framework. The observed spectrum is reproduced well when the O-O distance is in the range 2.5 3.5. This O-O bond length is more than twice as long as that of a free O2 molecule. The oxygen atom is located very close to the center of the boron triangle (closed three-center bond). These results support the structure determined by x-ray structural analysis. © 1990 The American Physical Society.

引用

页码：5693 / 5701

页数：9

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