Materials Data on Li15Au4 by Materials Project

Abstract

Li15Au4 crystallizes in the cubic I-43d space group. The structure is three-dimensional. there are two inequivalent Li sites. In the first Li site, Li is bonded in a 3-coordinate geometry to two equivalent Li and three equivalent Au atoms. There are one shorter (2.78 Å) and one longer (2.86 Å) Li–Li bond lengths. There are a spread of Li–Au bond distances ranging from 2.68–2.86 Å. In the second Li site, Li is bonded to eight equivalent Li and four equivalent Au atoms to form distorted LiLi8Au4 cuboctahedra that share corners with eight equivalent AuLi12 cuboctahedra, edges with eight equivalent LiLi8Au4 cuboctahedra, and faces with four equivalent AuLi12 cuboctahedra. All Li–Au bond lengths are 2.92 Å. Au is bonded to twelve Li atoms to form distorted AuLi12 cuboctahedra that share corners with six equivalent LiLi8Au4 cuboctahedra, edges with six equivalent AuLi12 cuboctahedra, faces with three equivalent LiLi8Au4 cuboctahedra, and faces with five equivalent AuLi12 cuboctahedra.