Materials Data on Rb2(WO4)3 by Materials Project

Abstract

Rb2(WO4)3 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Rb is bonded to six O atoms to form RbO6 octahedra that share corners with nine equivalent WO6 octahedra. The corner-sharing octahedra tilt angles range from 70–71°. There are three shorter (3.17 Å) and three longer (3.21 Å) Rb–O bond lengths. W is bonded to six O atoms to form WO6 octahedra that share corners with four equivalent WO6 octahedra and corners with six equivalent RbO6 octahedra. The corner-sharing octahedra tilt angles range from 40–71°. There is two shorter (1.89 Å) and four longer (1.97 Å) W–O bond length. There are two inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to one Rb and one W atom. In the second O site, O is bonded in a 2-coordinate geometry to one Rb and two equivalent W atoms.