GdMgGa crystallizes in the hexagonal P-62m space group. Mg(1) is bonded to two equivalent Ga(1) and two equivalent Ga(2) atoms to form a mixture of distorted corner and edge-sharing MgGa4 tetrahedra. Gd(1) is bonded in a 5-coordinate geometry to one Ga(1) and four equivalent Ga(2) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Gd(1) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Gd(1) atoms.
GdMgGa crystallizes in the hexagonal P-62m space group. Mg(1) is bonded to two equivalent Ga(1) and two equivalent Ga(2) atoms to form a mixture of distorted corner and edge-sharing MgGa4 tetrahedra. Both Mg(1)-Ga(1) bond lengths are 2.85 Å. Both Mg(1)-Ga(2) bond lengths are 2.83 Å. Gd(1) is bonded in a 5-coordinate geometry to one Ga(1) and four equivalent Ga(2) atoms. The Gd(1)-Ga(1) bond length is 3.12 Å. All Gd(1)-Ga(2) bond lengths are 3.12 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Gd(1) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Gd(1) atoms.