The crystal structure of vanadium pentoxide

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Abstract
The crystal structure of vanadium pentoxide, V 2 O 5 , has been redetermined with three-dimensional data obtained by photographic and by counter methods, and has been refined by differential syntheses. The results are in closer agreement with those of B yström , W ilhelmi and B rotzen than with those of K etelaar . The probable space group is Pmnm and the unit-cell dimensions are a = 11.510 Å, b = 4.369 Å, c = 3.563 Å. The structure is built up from distorted trigonal bipyramidal coordination polyhedra of O around V, which share edges to form zigzag double chains along [001] and are cross-linked along [100] through shared corners, thus forming sheets in the xz plane.

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