Materials Data on Li2MnF4 by Materials Project

Abstract

Li2MnF4 crystallizes in the orthorhombic Pmc2_1 space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a trigonal planar geometry to three F1- atoms. All Li–F bond lengths are 1.84 Å. In the second Li1+ site, Li1+ is bonded in a trigonal planar geometry to three F1- atoms. All Li–F bond lengths are 1.84 Å. Mn2+ is bonded to six F1- atoms to form edge-sharing MnF6 octahedra. There are a spread of Mn–F bond distances ranging from 2.13–2.17 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to one Li1+ and two equivalent Mn2+ atoms. In the second F1- site, F1- is bonded in a trigonal planar geometry to two equivalent Li1+ and one Mn2+ atom. In the third F1- site, F1- is bonded in a trigonal planar geometry to two equivalent Li1+ and one Mn2+ atom. In the fourth F1- site, F1- is bonded in a distorted trigonal planar geometry to one Li1+ and two equivalent Mn2+ atoms.