SmCuAl crystallizes in the hexagonal P-62m space group. Sm(1) is bonded in a 11-coordinate geometry to one Cu(1), four equivalent Cu(2), and six equivalent Al(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 9-coordinate geometry to three equivalent Sm(1) and six equivalent Al(1) atoms. In the second Cu site, Cu(2) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent Al(1) atoms. Al(1) is bonded in a 12-coordinate geometry to six equivalent Sm(1), two equivalent Cu(1), two equivalent Cu(2), and two equivalent Al(1) atoms.
SmCuAl crystallizes in the hexagonal P-62m space group. Sm(1) is bonded in a 11-coordinate geometry to one Cu(1), four equivalent Cu(2), and six equivalent Al(1) atoms. The Sm(1)-Cu(1) bond length is 2.97 Å. All Sm(1)-Cu(2) bond lengths are 2.95 Å. There are two shorter (3.24 Å) and four longer (3.28 Å) Sm(1)-Al(1) bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 9-coordinate geometry to three equivalent Sm(1) and six equivalent Al(1) atoms. All Cu(1)-Al(1) bond lengths are 2.60 Å. In the second Cu site, Cu(2) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent Al(1) atoms. All Cu(2)-Al(1) bond lengths are 2.82 Å. Al(1) is bonded in a 12-coordinate geometry to six equivalent Sm(1), two equivalent Cu(1), two equivalent Cu(2), and two equivalent Al(1) atoms. Both Al(1)-Al(1) bond lengths are 2.83 Å.