Acta Crystallographica Section B: Structural Science p. 572 - 577 (1992)
Update date:2022-08-16
Topics:
Barabanenkov, Yu. A.
Zakharov, N. D.
Zibrov, I. P.
Filonenko, V. P.
Werner, P.
A new type of tungsten oxide was synthesized from a mixture of W and WO3 by a solid-phase sintering method under high-pressure conditions.The crystal structure of the new oxide WO1.09 was investigated by selected-area electron diffraction and high-resolution transmission electron microscopy (HRTEM).It has the following unit-cell parameters: a=17.16, b=10.32, c=3.78 Angstroem, V=669 Angstroem3, Z=44, ρ=21 (3) g cm-3, and belongs to the space group Cmm2.The W positions were determined from computer-processed HRTEM structure images.The R-factor minimization procedure was used to refine cationic sites; R'=14.5percent.It is shown that the crystal structure is formed by edge sharing WO3 octahedrally and tetrahedrally coordinated W cations.
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