BaSrCaWO6 crystallizes in the orthorhombic P222 space group. There are four inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form distorted BaO12 cuboctahedra that share faces with four equivalent Sr(1)O6 octahedra and faces with four equivalent W(1)O6 octahedra. In the second Ba site, Ba(2) is bonded in a distorted q6 geometry to four equivalent O(4), four equivalent O(5), and four equivalent O(6) atoms. In the third Ba site, Ba(3) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(3) atoms. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(6) atoms. Sr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form SrO6 octahedra that share corners with six equivalent W(1)O6 octahedra and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 23-37°. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a square co-planar geometry to four equivalent O(5) atoms. In the second Ca site, Ca(2) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(6) atoms. In the third Ca site, Ca(3) is bonded in a 4-coordinate geometry to four equivalent O(3) and four equivalent O(4) atoms. In the fourth Ca site, Ca(4) is bonded in a rectangular see-saw-like geometry to four equivalent O(2) atoms. W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share corners with six equivalent Sr(1)O6 octahedra and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 23-37°. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Ba(2), one Sr(1), one Ca(1), and one W(1) atom. In the second O site, O(6) is bonded in a 3-coordinate geometry to one Ba(2), one Ba(4), one Sr(1), one Ca(2), and one W(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(4), one Sr(1), and one W(1) atom. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to one Ba(1), one Sr(1), one Ca(4), and one W(1) atom. In the fifth O site, O(3) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(3), one Sr(1), one Ca(3), and one W(1) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(2), one Sr(1), one Ca(3), and one W(1) atom.
BaSrCaWO6 crystallizes in the orthorhombic P222 space group. There are four inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form distorted BaO12 cuboctahedra that share faces with four equivalent Sr(1)O6 octahedra and faces with four equivalent W(1)O6 octahedra. All Ba(1)-O(1) bond lengths are 2.94 Å. All Ba(1)-O(2) bond lengths are 3.11 Å. All Ba(1)-O(3) bond lengths are 3.09 Å. In the second Ba site, Ba(2) is bonded in a distorted q6 geometry to four equivalent O(4), four equivalent O(5), and four equivalent O(6) atoms. All Ba(2)-O(4) bond lengths are 2.94 Å. All Ba(2)-O(5) bond lengths are 3.01 Å. All Ba(2)-O(6) bond lengths are 3.08 Å. In the third Ba site, Ba(3) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(3) atoms. All Ba(3)-O(3) bond lengths are 2.63 Å. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(6) atoms. All Ba(4)-O(1) bond lengths are 2.64 Å. All Ba(4)-O(6) bond lengths are 3.14 Å. Sr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form SrO6 octahedra that share corners with six equivalent W(1)O6 octahedra and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 23-37°. The Sr(1)-O(1) bond length is 2.49 Å. The Sr(1)-O(2) bond length is 2.50 Å. The Sr(1)-O(3) bond length is 2.43 Å. The Sr(1)-O(4) bond length is 2.43 Å. The Sr(1)-O(5) bond length is 2.52 Å. The Sr(1)-O(6) bond length is 2.47 Å. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a square co-planar geometry to four equivalent O(5) atoms. All Ca(1)-O(5) bond lengths are 2.38 Å. In the second Ca site, Ca(2) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(6) atoms. All Ca(2)-O(6) bond lengths are 2.37 Å. In the third Ca site, Ca(3) is bonded in a 4-coordinate geometry to four equivalent O(3) and four equivalent O(4) atoms. All Ca(3)-O(3) bond lengths are 3.01 Å. All Ca(3)-O(4) bond lengths are 2.37 Å. In the fourth Ca site, Ca(4) is bonded in a rectangular see-saw-like geometry to four equivalent O(2) atoms. All Ca(4)-O(2) bond lengths are 2.38 Å. W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share corners with six equivalent Sr(1)O6 octahedra and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 23-37°. The W(1)-O(1) bond length is 1.96 Å. The W(1)-O(2) bond length is 1.98 Å. The W(1)-O(3) bond length is 1.94 Å. The W(1)-O(4) bond length is 1.95 Å. The W(1)-O(5) bond length is 1.98 Å. The W(1)-O(6) bond length is 1.97 Å. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Ba(2), one Sr(1), one Ca(1), and one W(1) atom. In the second O site, O(6) is bonded in a 3-coordinate geometry to one Ba(2), one Ba(4), one Sr(1), one Ca(2), and one W(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(4), one Sr(1), and one W(1) atom. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to one Ba(1), one Sr(1), one Ca(4), and one W(1) atom. In the fifth O site, O(3) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(3), one Sr(1), one Ca(3), and one W(1) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(2), one Sr(1), one Ca(3), and one W(1) atom.