Abstract
The structure of β AgVO3has been determined on single crystal by X ray diffraction techniques. β AgVO3crystallizes in the monoclinic system, space groupCm, witha= 18.106(3) Å,b= 3.5787(7) Å,c= 8.043(3) Å, and β = 104.44(4)°. The acentric character of the structure is discussed on the basis of the atomic positions. The β AgVO3structure reveals a rather strong three dimensional network made of the vanadium atoms and three silver atoms with their associated oxygen surroundings, [Ag3V4O12]n−n. The fourth silver cation, which assumes the electrostatic balance, appears to be inserted in a monocapped trigonal prism allowing its mobility at highest temperatures. Structural relationships between this compound and other silver vanadium oxide bronzes such as Ag2V4O11and δ AgxV2O5involves crystallographic shear mechanisms. The existence of a new silver vanadium oxide bronze is discussed.
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