Materials Data on Li5Cu3F14 by Materials Project

Abstract

Li5Cu3F14 crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a body-centered cubic geometry to eight equivalent F1- atoms. All Li–F bond lengths are 2.49 Å. In the second Li1+ site, Li1+ is bonded in a 4-coordinate geometry to eight F1- atoms. There are a spread of Li–F bond distances ranging from 2.02–2.57 Å. There are two inequivalent Cu3+ sites. In the first Cu3+ site, Cu3+ is bonded to six F1- atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles are 45°. All Cu–F bond lengths are 1.87 Å. In the second Cu3+ site, Cu3+ is bonded to six F1- atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles are 45°. There is two shorter (1.90 Å) and four longer (1.93 Å) Cu–F bond length. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted single-bond geometry to four equivalent Li1+ and one Cu3+ atom. In the second F1- site, F1- is bonded in a 4-coordinate geometry to three Li1+ and one Cu3+ atom. In the third F1- site, F1- is bonded in a 2-coordinate geometry to two equivalent Li1+ and two Cu3+ atoms.