CrN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Cr(1) is bonded to six equivalent N(1) atoms to form CrN6 octahedra that share corners with eight equivalent Cr(1)N6 octahedra, corners with six equivalent N(1)Cr3N tetrahedra, and edges with two equivalent Cr(1)N6 octahedra. The corner-sharing octahedral tilt angles are 68°. N(1) is bonded to three equivalent Cr(1) and one N(1) atom to form NCr3N tetrahedra that share corners with three equivalent Cr(1)N6 octahedra, corners with thirteen equivalent N(1)Cr3N tetrahedra, and  an edgeedge with one N(1)Cr3N tetrahedra. The corner-sharing octahedral tilt angles are 66°.
CrN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Cr(1) is bonded to six equivalent N(1) atoms to form CrN6 octahedra that share corners with eight equivalent Cr(1)N6 octahedra, corners with six equivalent N(1)Cr3N tetrahedra, and edges with two equivalent Cr(1)N6 octahedra. The corner-sharing octahedral tilt angles are 68°. There are four shorter (2.04 Å) and two longer (2.05 Å) Cr(1)-N(1) bond lengths. N(1) is bonded to three equivalent Cr(1) and one N(1) atom to form NCr3N tetrahedra that share corners with three equivalent Cr(1)N6 octahedra, corners with thirteen equivalent N(1)Cr3N tetrahedra, and  an edgeedge with one N(1)Cr3N tetrahedra. The corner-sharing octahedral tilt angles are 66°. The N(1)-N(1) bond length is 1.35 Å.