Sr2SmWO6 is Orthorhombic Perovskite-derived structured and crystallizes in the cubic Pn-3 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to twelve equivalent O(1) atoms to form SrO12 cuboctahedra that share faces with four equivalent Sm(1)O6 octahedra and faces with four equivalent W(1)O6 octahedra. In the second Sr site, Sr(2) is bonded in a distorted rectangular see-saw-like geometry to eight equivalent O(1) atoms. Sm(1) is bonded to six equivalent O(1) atoms to form SmO6 octahedra that share corners with six equivalent W(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 24°. W(1) is bonded to six equivalent O(1) atoms to form WO6 octahedra that share corners with six equivalent Sm(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 24°. O(1) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(2), one Sm(1), and one W(1) atom.
Sr2SmWO6 is Orthorhombic Perovskite-derived structured and crystallizes in the cubic Pn-3 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to twelve equivalent O(1) atoms to form SrO12 cuboctahedra that share faces with four equivalent Sm(1)O6 octahedra and faces with four equivalent W(1)O6 octahedra. All Sr(1)-O(1) bond lengths are 3.01 Å. In the second Sr site, Sr(2) is bonded in a distorted rectangular see-saw-like geometry to eight equivalent O(1) atoms. There are four shorter (2.54 Å) and four longer (3.05 Å) Sr(2)-O(1) bond lengths. Sm(1) is bonded to six equivalent O(1) atoms to form SmO6 octahedra that share corners with six equivalent W(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 24°. All Sm(1)-O(1) bond lengths are 2.31 Å. W(1) is bonded to six equivalent O(1) atoms to form WO6 octahedra that share corners with six equivalent Sm(1)O6 octahedra and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 24°. All W(1)-O(1) bond lengths are 2.02 Å. O(1) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(2), one Sm(1), and one W(1) atom.