Materials Data on Al7CoCu2 by Materials Project

Abstract

Al7CoCu2 crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. Co is bonded in a 9-coordinate geometry to nine Al atoms. There are a spread of Co–Al bond distances ranging from 2.44–2.49 Å. Cu is bonded in a 10-coordinate geometry to two equivalent Cu and eight Al atoms. Both Cu–Cu bond lengths are 2.55 Å. There are a spread of Cu–Al bond distances ranging from 2.54–2.66 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded in a 1-coordinate geometry to one Co and four equivalent Cu atoms. In the second Al site, Al is bonded in a 2-coordinate geometry to two equivalent Co atoms. In the third Al site, Al is bonded in a 4-coordinate geometry to one Co and three equivalent Cu atoms.