SYNTHESIS, STRUCTURE, AND X-RAY-ABSORPTION SPECTRA OF LIXNBO2 AND NAXNBO2 (X-LESS-THAN-OR-EQUAL-TO-1)

被引：18
|
作者：
ROTH, HF
MEYER, G
HU, ZW
KAINDL, G
机构：
[1] UNIV HANNOVER,INST ANORGAN CHEM,CALLINSTR 9,D-30167 HANNOVER,GERMANY
[2] FREIEN UNIV BERLIN,INST EXPTL PHYS,D-14195 BERLIN,GERMANY
[3] SONDERFORSCHUNGSBEREICH 173,HANNOVER,GERMANY
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1993年 / 619卷 / 08期
关键词：
TERNARY NIOBIUM OXIDES; SYNTHESIS; CRYSTAL STRUCTURES; X-RAY ABSORPTION NEAR-EDGE STRUCTURE (XANES) STUDIES;
D O I：
10.1002/zaac.19936190808
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The two series of compounds, LixNbO2 and NaxNbO2, were synthesized from LiNbO2 and NaNbO2 with oxidizing agents. From neutron diffraction, it is concluded that the Li position is fully occupied for x = 1. Even though the long-range crystal symmetry does not seem to change for x < 1, as monitored by Guinier X-ray powder patterns, the Nb-L(III) XANES spectra exhibit significant spectral variations with x which reflect changes in the unoccupied d-density of states.
引用
收藏
页码：1369 / 1373
页数：5
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