Cr2N2Se crystallizes in the monoclinic C2/m space group. Cr(1) is bonded in a 4-coordinate geometry to four equivalent N(1) and three equivalent Se(1) atoms. N(1) is bonded to four equivalent Cr(1) atoms to form a mixture of corner and edge-sharing NCr4 tetrahedra. Se(1) is bonded in a 6-coordinate geometry to six equivalent Cr(1) atoms.
Cr2N2Se crystallizes in the monoclinic C2/m space group. Cr(1) is bonded in a 4-coordinate geometry to four equivalent N(1) and three equivalent Se(1) atoms. There are three shorter (1.93 Å) and one longer (2.00 Å) Cr(1)-N(1) bond length. All Cr(1)-Se(1) bond lengths are 2.78 Å. N(1) is bonded to four equivalent Cr(1) atoms to form a mixture of corner and edge-sharing NCr4 tetrahedra. Se(1) is bonded in a 6-coordinate geometry to six equivalent Cr(1) atoms.