Materials Data on RbBiF4 by Materials Project

Abstract

RbBiF4 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Rb1+ is bonded in a body-centered cubic geometry to eight F1- atoms. There are two shorter (2.61 Å) and six longer (2.90 Å) Rb–F bond lengths. Bi3+ is bonded in a distorted body-centered cubic geometry to eight F1- atoms. There are six shorter (2.38 Å) and two longer (2.61 Å) Bi–F bond lengths. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a 4-coordinate geometry to two equivalent Rb1+ and two equivalent Bi3+ atoms. In the second F1- site, F1- is bonded to four equivalent Rb1+ atoms to form corner-sharing FRb4 tetrahedra. In the third F1- site, F1- is bonded to four equivalent Bi3+ atoms to form distorted corner-sharing FBi4 tetrahedra.