Sm2Ru2O7 crystallizes in the tetragonal I4_1/amd space group. Sm(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Ru(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form corner-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sm(1) atoms to form OSm4 tetrahedra that share corners with four equivalent O(2)Sm2Ru2 tetrahedra, corners with four equivalent O(1)Sm4 tetrahedra, corners with eight equivalent O(3)Sm2Ru2 tetrahedra, edges with two equivalent O(2)Sm2Ru2 tetrahedra, and edges with four equivalent O(3)Sm2Ru2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Sm(1) and two equivalent Ru(1) atoms to form distorted OSm2Ru2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(2)Sm2Ru2 tetrahedra, corners with eight equivalent O(3)Sm2Ru2 tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with four equivalent O(3)Sm2Ru2 tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Ru(1) atoms to form distorted OSm2Ru2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(2)Sm2Ru2 tetrahedra, corners with eight equivalent O(3)Sm2Ru2 tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, edges with two equivalent O(2)Sm2Ru2 tetrahedra, and edges with two equivalent O(3)Sm2Ru2 tetrahedra.
Sm2Ru2O7 crystallizes in the tetragonal I4_1/amd space group. Sm(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Both Sm(1)-O(1) bond lengths are 2.23 Å. Both Sm(1)-O(2) bond lengths are 2.49 Å. All Sm(1)-O(3) bond lengths are 2.51 Å. Ru(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form corner-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. Both Ru(1)-O(2) bond lengths are 2.02 Å. All Ru(1)-O(3) bond lengths are 2.01 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sm(1) atoms to form OSm4 tetrahedra that share corners with four equivalent O(2)Sm2Ru2 tetrahedra, corners with four equivalent O(1)Sm4 tetrahedra, corners with eight equivalent O(3)Sm2Ru2 tetrahedra, edges with two equivalent O(2)Sm2Ru2 tetrahedra, and edges with four equivalent O(3)Sm2Ru2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Sm(1) and two equivalent Ru(1) atoms to form distorted OSm2Ru2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(2)Sm2Ru2 tetrahedra, corners with eight equivalent O(3)Sm2Ru2 tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with four equivalent O(3)Sm2Ru2 tetrahedra. In the third O site, O(3) is bonded to two equivalent Sm(1) and two equivalent Ru(1) atoms to form distorted OSm2Ru2 tetrahedra that share corners with two equivalent O(1)Sm4 tetrahedra, corners with four equivalent O(2)Sm2Ru2 tetrahedra, corners with eight equivalent O(3)Sm2Ru2 tetrahedra,  an edgeedge with one O(1)Sm4 tetrahedra, edges with two equivalent O(2)Sm2Ru2 tetrahedra, and edges with two equivalent O(3)Sm2Ru2 tetrahedra.