Materials Data on AlCu4 by Materials Project

Abstract

AlCu4 crystallizes in the cubic P2_13 space group. The structure is three-dimensional. there are two inequivalent Cu sites. In the first Cu site, Cu is bonded in a 12-coordinate geometry to nine Cu and three equivalent Al atoms. There are a spread of Cu–Cu bond distances ranging from 2.53–2.67 Å. There are a spread of Cu–Al bond distances ranging from 2.56–2.68 Å. In the second Cu site, Cu is bonded in a 3-coordinate geometry to nine equivalent Cu and three equivalent Al atoms. All Cu–Al bond lengths are 2.36 Å. Al is bonded to twelve Cu atoms to form a mixture of distorted corner and face-sharing AlCu12 cuboctahedra.