Mg2CrN3 crystallizes in the orthorhombic Cmc2_1 space group. Mg(1) is bonded to one N(2) and three equivalent N(1) atoms to form distorted MgN4 tetrahedra that share corners with five equivalent Cr(1)N4 tetrahedra and corners with seven equivalent Mg(1)N4 tetrahedra. Cr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form CrN4 tetrahedra that share corners with two equivalent Cr(1)N4 tetrahedra and corners with ten equivalent Mg(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 4-coordinate geometry to three equivalent Mg(1) and one Cr(1) atom. In the second N site, N(2) is bonded to two equivalent Mg(1) and two equivalent Cr(1) atoms to form corner-sharing NMg2Cr2 tetrahedra.
Mg2CrN3 crystallizes in the orthorhombic Cmc2_1 space group. Mg(1) is bonded to one N(2) and three equivalent N(1) atoms to form distorted MgN4 tetrahedra that share corners with five equivalent Cr(1)N4 tetrahedra and corners with seven equivalent Mg(1)N4 tetrahedra. The Mg(1)-N(2) bond length is 2.07 Å. There are two shorter (2.08 Å) and one longer (2.14 Å) Mg(1)-N(1) bond length. Cr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form CrN4 tetrahedra that share corners with two equivalent Cr(1)N4 tetrahedra and corners with ten equivalent Mg(1)N4 tetrahedra. Both Cr(1)-N(1) bond lengths are 1.74 Å. There is one shorter (1.84 Å) and one longer (1.85 Å) Cr(1)-N(2) bond length. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 4-coordinate geometry to three equivalent Mg(1) and one Cr(1) atom. In the second N site, N(2) is bonded to two equivalent Mg(1) and two equivalent Cr(1) atoms to form corner-sharing NMg2Cr2 tetrahedra.