RIETVELD ANALYSIS OF NAXWO3+X/2.YH2O, WHICH HAS THE HEXAGONAL TUNGSTEN BRONZE STRUCTURE

被引:44
作者
REIS, KP
PRINCE, E
WHITTINGHAM, MS
机构
[1] SUNY BINGHAMTON,DEPT CHEM,BINGHAMTON,NY 13902
[2] NATL INST STAND & TECHNOL,MAT SCI & ENGN LAB,GAITHERSBURG,MD 20899
[3] SUNY BINGHAMTON,MAT RES CTR,BINGHAMTON,NY 13902
关键词
D O I
10.1021/cm00020a016
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
Powder neutron diffraction and Rietveld analysis were used to investigate the crystal structures of hydrated and deuterated samples of NaxWO3+x/2.yH2O (x approximately 0.17, y approximately 0.23). The compound, which crystallizes with the symmetry of space group P6/mmm, is related to the hexagonal tungsten bronze structure but differs from it due to the presence of sodium and oxygen along the hexagonal tunnel. Some of the oxygens appear in the structure as water molecules. The oxygen is disordered along the z axis in the hexagonal cavity with sodium in the hexagonal window.
引用
收藏
页码:307 / 312
页数:6
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