Ba2SrSeO6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Ba(1) is bonded to twelve equivalent O(1) atoms to form BaO12 cuboctahedra that share corners with twelve equivalent Ba(1)O12 cuboctahedra, faces with six equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Sr(1)O6 octahedra, and faces with four equivalent Se(1)O6 octahedra. Sr(1) is bonded to six equivalent O(1) atoms to form SrO6 octahedra that share corners with six equivalent Se(1)O6 octahedra and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Se(1) is bonded to six equivalent O(1) atoms to form SeO6 octahedra that share corners with six equivalent Sr(1)O6 octahedra and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. O(1) is bonded in a distorted linear geometry to four equivalent Ba(1), one Sr(1), and one Se(1) atom.
Ba2SrSeO6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Ba(1) is bonded to twelve equivalent O(1) atoms to form BaO12 cuboctahedra that share corners with twelve equivalent Ba(1)O12 cuboctahedra, faces with six equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Sr(1)O6 octahedra, and faces with four equivalent Se(1)O6 octahedra. All Ba(1)-O(1) bond lengths are 3.01 Å. Sr(1) is bonded to six equivalent O(1) atoms to form SrO6 octahedra that share corners with six equivalent Se(1)O6 octahedra and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Sr(1)-O(1) bond lengths are 2.40 Å. Se(1) is bonded to six equivalent O(1) atoms to form SeO6 octahedra that share corners with six equivalent Sr(1)O6 octahedra and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Se(1)-O(1) bond lengths are 1.84 Å. O(1) is bonded in a distorted linear geometry to four equivalent Ba(1), one Sr(1), and one Se(1) atom.