Materials Data on Rb2Te by Materials Project

Abstract

Rb2Te crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded to six equivalent Te2- atoms to form RbTe6 octahedra that share corners with twelve equivalent RbTe6 octahedra, corners with twelve equivalent RbTe5 trigonal bipyramids, edges with six equivalent RbTe6 octahedra, faces with two equivalent RbTe6 octahedra, and faces with six equivalent RbTe5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 51–52°. There are a spread of Rb–Te bond distances ranging from 4.08–4.10 Å. In the second Rb1+ site, Rb1+ is bonded to five equivalent Te2- atoms to form RbTe5 trigonal bipyramids that share corners with twelve equivalent RbTe6 octahedra, corners with eight equivalent RbTe5 trigonal bipyramids, edges with six equivalent RbTe5 trigonal bipyramids, and faces with six equivalent RbTe6 octahedra. The corner-sharing octahedra tilt angles range from 30–60°. There are a spread of Rb–Te bond distances ranging from 3.54–4.09 Å. Te2- is bonded in a 11-coordinate geometry to eleven Rb1+ atoms.