Materials Data on Rb3ZnBr5 by Materials Project

Abstract

Rb3ZnBr5 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 in a 9-coordinate geometry to nine Br1- atoms. There are a spread of Rb–Br bond distances ranging from 3.48–4.11 Å. In the second Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Rb–Br bond distances ranging from 3.42–3.82 Å. Zn2+ is bonded in a tetrahedral geometry to four Br1- atoms. There are three shorter (2.43 Å) and one longer (2.46 Å) Zn–Br bond lengths. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded to six Rb1+ atoms to form distorted face-sharing BrRb6 octahedra. In the second Br1- site, Br1- is bonded in a 1-coordinate geometry to five Rb1+ and one Zn2+ atom. In the third Br1- site, Br1- is bonded in a distorted single-bond geometry to five Rb1+ and one Zn2+ atom. In the fourth Br1- site, Br1- is bonded in a distorted single-bond geometry to five Rb1+ and one Zn2+ atom.