Materials Data on Rb2Te(WO4)3 by Materials Project

Abstract

Rb2TeW3O12 crystallizes in the trigonal P31c space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 3-coordinate geometry to three equivalent O2- atoms. All Rb–O bond lengths are 3.03 Å. In the second Rb1+ site, Rb1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.93 Å) and three longer (3.20 Å) Rb–O bond lengths. W6+ is bonded to six O2- atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 31–42°. There are a spread of W–O bond distances ranging from 1.79–2.14 Å. Te4+ is bonded in a 6-coordinate geometry to three equivalent O2- atoms. All Te–O bond lengths are 1.92 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+ and one W6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+, one W6+, and one Te4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Rb1+ and two equivalent W6+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent W6+ atoms.