The structure of molten V2O5 has been investigated using a radial distribution function based on X-ray scattered intensity data collected at 750°C; analysis was by the correlation method. The average V-O distance of 1.75 Å in the melt is shorter than that of 1.82 Å in the crystal and the coordination number of 3.9 in the melt is smaller than that of 5.0 in the crystal. The most probable model for molten V2O5 is similar to the crystal structure of P2O5 or SiO2. Each VO4 tetrahedron is surrounded by three VO4 tetrahedra and the V-V distance of 3.44 Å is almost equal to twice the V-O distance. The estimated density of the model assuming the cristoballite-like structure is 2.4 g cm-3, while the measured density is 2.15 g cm-3.
|Number of pages||7|
|Journal||Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases|
|Publication status||Published - Dec 1 1981|
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