Mg2CdN2 crystallizes in the trigonal P-3m1 space group. Mg(1) is bonded to four equivalent N(1) atoms to form distorted MgN4 tetrahedra that share corners with six equivalent Cd(1)N6 octahedra, corners with six equivalent Mg(1)N4 tetrahedra, edges with three equivalent Cd(1)N6 octahedra, and edges with three equivalent Mg(1)N4 tetrahedra. The corner-sharing octahedral tilt angles range from 26-52°. Cd(1) is bonded to six equivalent N(1) atoms to form distorted CdN6 octahedra that share corners with twelve equivalent Mg(1)N4 tetrahedra, edges with six equivalent Cd(1)N6 octahedra, and edges with six equivalent Mg(1)N4 tetrahedra. N(1) is bonded in a 7-coordinate geometry to four equivalent Mg(1) and three equivalent Cd(1) atoms.
Mg2CdN2 crystallizes in the trigonal P-3m1 space group. Mg(1) is bonded to four equivalent N(1) atoms to form distorted MgN4 tetrahedra that share corners with six equivalent Cd(1)N6 octahedra, corners with six equivalent Mg(1)N4 tetrahedra, edges with three equivalent Cd(1)N6 octahedra, and edges with three equivalent Mg(1)N4 tetrahedra. The corner-sharing octahedral tilt angles range from 26-52°. There are three shorter (2.10 Å) and one longer (2.28 Å) Mg(1)-N(1) bond length. Cd(1) is bonded to six equivalent N(1) atoms to form distorted CdN6 octahedra that share corners with twelve equivalent Mg(1)N4 tetrahedra, edges with six equivalent Cd(1)N6 octahedra, and edges with six equivalent Mg(1)N4 tetrahedra. All Cd(1)-N(1) bond lengths are 2.62 Å. N(1) is bonded in a 7-coordinate geometry to four equivalent Mg(1) and three equivalent Cd(1) atoms.