Cu3Al is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 14-coordinate geometry to eight equivalent Cu(2) and six equivalent Al(1) atoms. In the second Cu site, Cu(2) is bonded in a distorted body-centered cubic geometry to four equivalent Cu(1) and four equivalent Al(1) atoms. Al(1) is bonded in a distorted body-centered cubic geometry to six equivalent Cu(1) and eight equivalent Cu(2) atoms.
Cu3Al is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 14-coordinate geometry to eight equivalent Cu(2) and six equivalent Al(1) atoms. All Cu(1)-Cu(2) bond lengths are 2.50 Å. All Cu(1)-Al(1) bond lengths are 2.89 Å. In the second Cu site, Cu(2) is bonded in a distorted body-centered cubic geometry to four equivalent Cu(1) and four equivalent Al(1) atoms. All Cu(2)-Al(1) bond lengths are 2.50 Å. Al(1) is bonded in a distorted body-centered cubic geometry to six equivalent Cu(1) and eight equivalent Cu(2) atoms.