Materials Data on Cs2AgBiBr6 by Materials Project

Abstract

Cs2AgBiBr6 is alpha Rhenium trioxide-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional and consists of two bismuth molecules, two silver molecules, and one CsBr3 framework. In the CsBr3 framework, Cs1+ is bonded to six Br1- atoms to form corner-sharing CsBr6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Cs–Br bond distances ranging from 3.27–3.30 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a linear geometry to two equivalent Cs1+ atoms. In the second Br1- site, Br1- is bonded in a linear geometry to two equivalent Cs1+ atoms. In the third Br1- site, Br1- is bonded in a linear geometry to two equivalent Cs1+ atoms.