Materials Data on LiAg2F4 by Materials Project

Abstract

LiAg2F4 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. Li1+ is bonded to six F1- atoms to form distorted LiF6 octahedra that share corners with four equivalent LiF6 octahedra and edges with eight equivalent AgF6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are a spread of Li–F bond distances ranging from 1.89–2.67 Å. Ag+1.50+ is bonded to six F1- atoms to form AgF6 octahedra that share corners with six equivalent AgF6 octahedra, edges with four equivalent LiF6 octahedra, and edges with four equivalent AgF6 octahedra. The corner-sharing octahedra tilt angles range from 13–14°. There are a spread of Ag–F bond distances ranging from 2.19–2.46 Å. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded to one Li1+ and four equivalent Ag+1.50+ atoms to form a mixture of distorted corner and edge-sharing FLiAg4 square pyramids. In the second F1- site, F1- is bonded in a distorted square co-planar geometry to two equivalent Li1+ and two equivalent Ag+1.50+ atoms.