Materials Data on NaV2O5 by Materials Project

Abstract

NaV2O5 crystallizes in the orthorhombic Pmn2_1 space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.50–2.80 Å. There are two inequivalent V+4.50+ sites. In the first V+4.50+ site, V+4.50+ is bonded to five O2- atoms to form a mixture of distorted corner and edge-sharing VO5 trigonal bipyramids. There are a spread of V–O bond distances ranging from 1.64–1.99 Å. In the second V+4.50+ site, V+4.50+ is bonded to five O2- atoms to form a mixture of distorted corner and edge-sharing VO5 trigonal bipyramids. There are a spread of V–O bond distances ranging from 1.66–2.02 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Na1+ and one V+4.50+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and three V+4.50+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+ and two V+4.50+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Na1+ and one V+4.50+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+ and three V+4.50+ atoms.