BaSrCaWO6 crystallizes in the tetragonal P-4n2 space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Sr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SrO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-37°. Ca(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. W(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent Sr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-37°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), one Sr(1), two equivalent Ca(1), and one W(1) atom to form a mixture of distorted corner and edge-sharing OBa2SrCa2W octahedra. The corner-sharing octahedral tilt angles range from 0-8°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Ca(1), and one W(1) atom.
BaSrCaWO6 crystallizes in the tetragonal P-4n2 space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Ba(1)-O(1) bond lengths are 2.98 Å. All Ba(1)-O(2) bond lengths are 2.79 Å. Sr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SrO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-37°. Both Sr(1)-O(1) bond lengths are 2.39 Å. All Sr(1)-O(2) bond lengths are 2.47 Å. Ca(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Ca(1)-O(1) bond lengths are 2.98 Å. All Ca(1)-O(2) bond lengths are 2.48 Å. W(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent Sr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-37°. Both W(1)-O(1) bond lengths are 1.97 Å. All W(1)-O(2) bond lengths are 1.95 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), one Sr(1), two equivalent Ca(1), and one W(1) atom to form a mixture of distorted corner and edge-sharing OBa2SrCa2W octahedra. The corner-sharing octahedral tilt angles range from 0-8°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Ca(1), and one W(1) atom.