Materials Data on Al7Cu2Rh by Materials Project

Abstract

RhCu2Al7 crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. Rh is bonded in a 9-coordinate geometry to nine Al atoms. There are a spread of Rh–Al bond distances ranging from 2.52–2.56 Å. Cu is bonded in a 8-coordinate geometry to two equivalent Cu and eight Al atoms. Both Cu–Cu bond lengths are 2.59 Å. There are a spread of Cu–Al bond distances ranging from 2.55–2.63 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded in a 2-coordinate geometry to two equivalent Rh atoms. In the second Al site, Al is bonded in a 1-coordinate geometry to one Rh and four equivalent Cu atoms. In the third Al site, Al is bonded in a 4-coordinate geometry to one Rh and three equivalent Cu atoms.