Cr3N4 is Hausmannite structured and crystallizes in the cubic Fd-3m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to four equivalent N(1) atoms to form corner-sharing CrN4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. In the second Cr site, Cr(2) is bonded to six equivalent N(1) atoms to form CrN6 octahedra that share corners with six equivalent Cr(1)N4 tetrahedra and edges with six equivalent Cr(2)N6 octahedra. N(1) is bonded in a distorted rectangular see-saw-like geometry to one Cr(1) and three equivalent Cr(2) atoms.
Cr3N4 is Hausmannite structured and crystallizes in the cubic Fd-3m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to four equivalent N(1) atoms to form corner-sharing CrN4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. All Cr(1)-N(1) bond lengths are 1.82 Å. In the second Cr site, Cr(2) is bonded to six equivalent N(1) atoms to form CrN6 octahedra that share corners with six equivalent Cr(1)N4 tetrahedra and edges with six equivalent Cr(2)N6 octahedra. All Cr(2)-N(1) bond lengths are 2.02 Å. N(1) is bonded in a distorted rectangular see-saw-like geometry to one Cr(1) and three equivalent Cr(2) atoms.