Materials Data on GaAsO4 by Materials Project

Abstract

GaAsO4 crystallizes in the trigonal P3_121 space group. The structure is three-dimensional. Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four equivalent AsO4 tetrahedra. There is two shorter (1.85 Å) and two longer (1.86 Å) Ga–O bond length. As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with four equivalent GaO4 tetrahedra. All As–O bond lengths are 1.72 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Ga3+ and one As5+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Ga3+ and one As5+ atom.