Materials Data on GaHO2 by Materials Project

Abstract

GaOOH crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ga3+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing GaO6 octahedra. The corner-sharing octahedral tilt angles are 57°. There are a spread of Ga–O bond distances ranging from 1.95–2.09 Å. H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.71 Å) H–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent Ga3+ and one H1+ atom to form distorted corner-sharing OGa3H tetrahedra. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Ga3+ and one H1+ atom.