Materials Data on GeWO4 by Materials Project

Abstract

WGeO4 crystallizes in the orthorhombic Pnna space group. The structure is three-dimensional. W4+ is bonded to six O2- atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 32°. There are a spread of W–O bond distances ranging from 1.88–2.04 Å. Ge4+ is bonded in a rectangular see-saw-like geometry to four equivalent O2- atoms. There are two shorter (1.97 Å) and two longer (2.30 Å) Ge–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one W4+ and two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent W4+ atoms.