Sr3(RuN2)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to two equivalent N(2) and four equivalent N(1) atoms. In the second Sr site, Sr(2) is bonded to two equivalent N(1) and four equivalent N(2) atoms to form distorted SrN6 octahedra that share corners with four equivalent Ru(1)N4 tetrahedra, edges with two equivalent Sr(2)N6 octahedra, and edges with four equivalent Ru(1)N4 tetrahedra. Ru(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form RuN4 tetrahedra that share corners with two equivalent Sr(2)N6 octahedra, corners with two equivalent Ru(1)N4 tetrahedra, edges with two equivalent Sr(2)N6 octahedra, and  an edgeedge with one Ru(1)N4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-54°. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 7-coordinate geometry to one Sr(2), four equivalent Sr(1), and two equivalent Ru(1) atoms. In the second N site, N(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ru(1) atoms.
Sr3(RuN2)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to two equivalent N(2) and four equivalent N(1) atoms. There is one shorter (2.64 Å) and one longer (2.78 Å) Sr(1)-N(2) bond length. There are a spread of Sr(1)-N(1) bond distances ranging from 2.78-2.93 Å. In the second Sr site, Sr(2) is bonded to two equivalent N(1) and four equivalent N(2) atoms to form distorted SrN6 octahedra that share corners with four equivalent Ru(1)N4 tetrahedra, edges with two equivalent Sr(2)N6 octahedra, and edges with four equivalent Ru(1)N4 tetrahedra. Both Sr(2)-N(1) bond lengths are 2.75 Å. There are two shorter (2.61 Å) and two longer (2.65 Å) Sr(2)-N(2) bond lengths. Ru(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form RuN4 tetrahedra that share corners with two equivalent Sr(2)N6 octahedra, corners with two equivalent Ru(1)N4 tetrahedra, edges with two equivalent Sr(2)N6 octahedra, and  an edgeedge with one Ru(1)N4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-54°. There is one shorter (2.05 Å) and one longer (2.10 Å) Ru(1)-N(1) bond length. There is one shorter (1.96 Å) and one longer (2.05 Å) Ru(1)-N(2) bond length. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 7-coordinate geometry to one Sr(2), four equivalent Sr(1), and two equivalent Ru(1) atoms. In the second N site, N(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Ru(1) atoms.