Materials Data on RbLiF2 by Materials Project
RbLiF2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are a spread of Rb–F bond distances ranging from 2.87–3.17 Å. Li1+ is bonded to four F1- atoms to form a mixture of corner and edge-sharing LiF4 tetrahedra. There are a spread of Li–F bond distances ranging from 1.84–1.92 Å. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted bent 120 degrees geometry to four equivalent Rb1+ and two equivalent Li1+ atoms. In the second F1- site, F1- is bonded in a distorted linear geometry to four equivalent Rb1+ and two equivalent Li1+ atoms. In the third F1- site, F1- is bonded in a 2-coordinate geometry to four equivalent Rb1+ and two equivalent Li1+ atoms.