MgIr2 is Hexagonal Laves structured and crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded in a 12-coordinate geometry to three equivalent Ir(1) and nine equivalent Ir(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to six equivalent Mg(1) and six equivalent Ir(2) atoms to form a mixture of corner, face, and edge-sharing IrMg6Ir6 cuboctahedra. In the second Ir site, Ir(2) is bonded to six equivalent Mg(1), two equivalent Ir(1), and four equivalent Ir(2) atoms to form a mixture of corner, face, and edge-sharing IrMg6Ir6 cuboctahedra.
MgIr2 is Hexagonal Laves structured and crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded in a 12-coordinate geometry to three equivalent Ir(1) and nine equivalent Ir(2) atoms. All Mg(1)-Ir(1) bond lengths are 3.04 Å. There are six shorter (3.00 Å) and three longer (3.05 Å) Mg(1)-Ir(2) bond lengths. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to six equivalent Mg(1) and six equivalent Ir(2) atoms to form a mixture of corner, face, and edge-sharing IrMg6Ir6 cuboctahedra. All Ir(1)-Ir(2) bond lengths are 2.61 Å. In the second Ir site, Ir(2) is bonded to six equivalent Mg(1), two equivalent Ir(1), and four equivalent Ir(2) atoms to form a mixture of corner, face, and edge-sharing IrMg6Ir6 cuboctahedra. There are two shorter (2.50 Å) and two longer (2.67 Å) Ir(2)-Ir(2) bond lengths.