ErCdGa crystallizes in the hexagonal P-62m space group. Er(1) is bonded in a 11-coordinate geometry to six equivalent Cd(1), one Ga(2), and four equivalent Ga(1) atoms. Cd(1) is bonded in a 12-coordinate geometry to six equivalent Er(1), two equivalent Cd(1), two equivalent Ga(1), and two equivalent Ga(2) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 9-coordinate geometry to three equivalent Er(1) and six equivalent Cd(1) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Er(1) and three equivalent Cd(1) atoms.
ErCdGa crystallizes in the hexagonal P-62m space group. Er(1) is bonded in a 11-coordinate geometry to six equivalent Cd(1), one Ga(2), and four equivalent Ga(1) atoms. There are two shorter (3.19 Å) and four longer (3.42 Å) Er(1)-Cd(1) bond lengths. The Er(1)-Ga(2) bond length is 3.03 Å. All Er(1)-Ga(1) bond lengths are 3.05 Å. Cd(1) is bonded in a 12-coordinate geometry to six equivalent Er(1), two equivalent Cd(1), two equivalent Ga(1), and two equivalent Ga(2) atoms. Both Cd(1)-Cd(1) bond lengths are 3.09 Å. Both Cd(1)-Ga(1) bond lengths are 2.73 Å. Both Cd(1)-Ga(2) bond lengths are 2.82 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 9-coordinate geometry to three equivalent Er(1) and six equivalent Cd(1) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Er(1) and three equivalent Cd(1) atoms.