RuN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Ru(1) is bonded to six equivalent N(1) atoms to form RuN6 octahedra that share corners with eight equivalent Ru(1)N6 octahedra, corners with six equivalent N(1)Ru3N tetrahedra, and edges with two equivalent Ru(1)N6 octahedra. The corner-sharing octahedral tilt angles are 68°. N(1) is bonded to three equivalent Ru(1) and one N(1) atom to form NRu3N tetrahedra that share corners with three equivalent Ru(1)N6 octahedra, corners with thirteen equivalent N(1)Ru3N tetrahedra, and  an edgeedge with one N(1)Ru3N tetrahedra. The corner-sharing octahedral tilt angles range from 62-66°.
RuN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Ru(1) is bonded to six equivalent N(1) atoms to form RuN6 octahedra that share corners with eight equivalent Ru(1)N6 octahedra, corners with six equivalent N(1)Ru3N tetrahedra, and edges with two equivalent Ru(1)N6 octahedra. The corner-sharing octahedral tilt angles are 68°. There are two shorter (2.08 Å) and four longer (2.12 Å) Ru(1)-N(1) bond lengths. N(1) is bonded to three equivalent Ru(1) and one N(1) atom to form NRu3N tetrahedra that share corners with three equivalent Ru(1)N6 octahedra, corners with thirteen equivalent N(1)Ru3N tetrahedra, and  an edgeedge with one N(1)Ru3N tetrahedra. The corner-sharing octahedral tilt angles range from 62-66°. The N(1)-N(1) bond length is 1.34 Å.