OsN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Os(1) is bonded to six equivalent N(1) atoms to form OsN6 octahedra that share corners with eight equivalent Os(1)N6 octahedra, corners with six equivalent N(1)Os3N tetrahedra, and edges with two equivalent Os(1)N6 octahedra. The corner-sharing octahedral tilt angles are 66°. N(1) is bonded to three equivalent Os(1) and one N(1) atom to form NOs3N tetrahedra that share corners with three equivalent Os(1)N6 octahedra, corners with thirteen equivalent N(1)Os3N tetrahedra, and  an edgeedge with one N(1)Os3N tetrahedra. The corner-sharing octahedral tilt angles range from 63-67°.
OsN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Os(1) is bonded to six equivalent N(1) atoms to form OsN6 octahedra that share corners with eight equivalent Os(1)N6 octahedra, corners with six equivalent N(1)Os3N tetrahedra, and edges with two equivalent Os(1)N6 octahedra. The corner-sharing octahedral tilt angles are 66°. There are two shorter (2.07 Å) and four longer (2.11 Å) Os(1)-N(1) bond lengths. N(1) is bonded to three equivalent Os(1) and one N(1) atom to form NOs3N tetrahedra that share corners with three equivalent Os(1)N6 octahedra, corners with thirteen equivalent N(1)Os3N tetrahedra, and  an edgeedge with one N(1)Os3N tetrahedra. The corner-sharing octahedral tilt angles range from 63-67°. The N(1)-N(1) bond length is 1.41 Å.