Materials Data on VAsO5 by Materials Project

Abstract

VOAsO4 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two VOAsO4 sheets oriented in the (0, 1, 0) direction. V5+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of V–O bond distances ranging from 1.60–1.99 Å. As5+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.72 Å) and one longer (1.74 Å) As–O bond length. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V5+ and one As5+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one V5+ and one As5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one V5+ and one As5+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one V5+ and one As5+ atom.