Materials Data on Li2Cu3F8 by Materials Project

Abstract

Li2Cu3F8 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a distorted tetrahedral geometry to four F1- atoms. There are a spread of Li–F bond distances ranging from 1.81–2.16 Å. In the second Li1+ site, Li1+ is bonded in a distorted tetrahedral geometry to four F1- atoms. There are a spread of Li–F bond distances ranging from 1.81–2.12 Å. There are three inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a 5-coordinate geometry to five F1- atoms. There are a spread of Cu–F bond distances ranging from 1.85–2.23 Å. In the second Cu2+ site, Cu2+ is bonded in a square co-planar geometry to four F1- atoms. There are a spread of Cu–F bond distances ranging from 1.86–2.02 Å. In the third Cu2+ site, Cu2+ is bonded in a 5-coordinate geometry to five F1- atoms. There are a spread of Cu–F bond distances ranging from 1.85–2.20 Å. There are eight inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to one Li1+ and one Cu2+ atom. In the second F1- site, F1- is bonded in a 3-coordinate geometry to one Li1+ and two Cu2+ atoms. In the third F1- site, F1- is bonded in a bent 120 degrees geometry to one Li1+ and one Cu2+ atom. In the fourth F1- site, F1- is bonded in a bent 120 degrees geometry to one Li1+ and one Cu2+ atom. In the fifth F1- site, F1- is bonded to one Li1+ and three Cu2+ atoms to form a mixture of distorted edge and corner-sharing FLiCu3 trigonal pyramids. In the sixth F1- site, F1- is bonded to one Li1+ and three Cu2+ atoms to form a mixture of distorted edge and corner-sharing FLiCu3 trigonal pyramids. In the seventh F1- site, F1- is bonded in a 3-coordinate geometry to one Li1+ and two Cu2+ atoms. In the eighth F1- site, F1- is bonded in a bent 150 degrees geometry to one Li1+ and one Cu2+ atom.