Mg3Ga crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to two equivalent Mg(1), six equivalent Mg(2), and four equivalent Ga(1) atoms. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to three equivalent Mg(1), six equivalent Mg(2), and three equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1) and six equivalent Mg(2) atoms.
Mg3Ga crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to two equivalent Mg(1), six equivalent Mg(2), and four equivalent Ga(1) atoms. Both Mg(1)-Mg(1) bond lengths are 3.22 Å. There are two shorter (3.02 Å) and four longer (3.10 Å) Mg(1)-Mg(2) bond lengths. There are two shorter (2.96 Å) and two longer (3.17 Å) Mg(1)-Ga(1) bond lengths. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to three equivalent Mg(1), six equivalent Mg(2), and three equivalent Ga(1) atoms. There are four shorter (3.08 Å) and two longer (3.22 Å) Mg(2)-Mg(2) bond lengths. There are two shorter (2.92 Å) and one longer (3.16 Å) Mg(2)-Ga(1) bond length. Ga(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1) and six equivalent Mg(2) atoms.