Mn2N2Se crystallizes in the monoclinic C2/m space group. Mn(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 Mn(1) atoms to form a mixture of edge and corner-sharing NMn4 trigonal pyramids. Se(1) is bonded in a 6-coordinate geometry to six equivalent Mn(1) atoms.
Mn2N2Se crystallizes in the monoclinic C2/m space group. Mn(1) is bonded in a 4-coordinate geometry to four equivalent N(1) and three equivalent Se(1) atoms. There are a spread of Mn(1)-N(1) bond distances ranging from 1.86-2.00 Å. There are two shorter (2.75 Å) and one longer (2.76 Å) Mn(1)-Se(1) bond length. N(1) is bonded to four equivalent Mn(1) atoms to form a mixture of edge and corner-sharing NMn4 trigonal pyramids. Se(1) is bonded in a 6-coordinate geometry to six equivalent Mn(1) atoms.