Materials Data on RbTmI3 by Materials Project

Abstract

RbTmI3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb is bonded in a 9-coordinate geometry to nine I atoms. There are a spread of Rb–I bond distances ranging from 3.78–4.03 Å. Tm is bonded to six I atoms to form edge-sharing TmI6 octahedra. There are a spread of Tm–I bond distances ranging from 3.09–3.13 Å. There are three inequivalent I sites. In the first I site, I is bonded in a 5-coordinate geometry to two equivalent Rb and three equivalent Tm atoms. In the second I site, I is bonded in a 5-coordinate geometry to three equivalent Rb and two equivalent Tm atoms. In the third I site, I is bonded in a 1-coordinate geometry to four equivalent Rb and one Tm atom.