Sr2O3 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Pm-3m 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 corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, and faces with eight equivalent Sr(2)O6 octahedra. In the second Sr site, Sr(2) is bonded to six equivalent O(1) atoms to form SrO6 octahedra that share corners with six equivalent Sr(2)O6 octahedra and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. O(1) is bonded in a linear geometry to two equivalent Sr(2) and four equivalent Sr(1) atoms.
Sr2O3 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Pm-3m 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 corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, and faces with eight equivalent Sr(2)O6 octahedra. All Sr(1)-O(1) bond lengths are 3.24 Å. In the second Sr site, Sr(2) is bonded to six equivalent O(1) atoms to form SrO6 octahedra that share corners with six equivalent Sr(2)O6 octahedra and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Sr(2)-O(1) bond lengths are 2.29 Å. O(1) is bonded in a linear geometry to two equivalent Sr(2) and four equivalent Sr(1) atoms.