Ba3SrCa2(WO6)2 crystallizes in the triclinic P1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), one O(9), two equivalent O(1), two equivalent O(11), and two equivalent O(7) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(1)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ca(2)O6 octahedra,  a faceface with one W(1)O6 octahedra, faces with three equivalent Ca(1)O6 octahedra, and faces with three equivalent W(2)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), one O(9), two equivalent O(12), two equivalent O(2), and two equivalent O(8) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(1)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ca(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with three equivalent Ca(2)O6 octahedra, and faces with three equivalent W(1)O6 octahedra. In the third Ba site, Ba(3) is bonded to one O(1), one O(11), one O(12), one O(2), one O(7), one O(8), two equivalent O(10), two equivalent O(3), and two equivalent O(6) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ca(2)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with three equivalent Ca(1)O6 octahedra, and faces with three equivalent W(1)O6 octahedra. Sr(1) is bonded in a 12-coordinate geometry to one O(1), one O(11), one O(12), one O(2), one O(7), one O(8), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to one O(1), one O(10), one O(11), one O(3), one O(6), and one O(7) atom to form CaO6 octahedra that share corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, and faces with three equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. In the second Ca site, Ca(2) is bonded to one O(12), one O(2), one O(4), one O(5), one O(8), and one O(9) atom to form CaO6 octahedra that share corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(6), and one O(8) atom to form WO6 octahedra that share corners with three equivalent Ca(1)O6 octahedra, corners with three equivalent Ca(2)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, and faces with three equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. In the second W site, W(2) is bonded to one O(1), one O(11), one O(4), one O(5), one O(7), and one O(9) atom to form WO6 octahedra that share corners with three equivalent Ca(1)O6 octahedra, corners with three equivalent Ca(2)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ba(3), two equivalent Ba(1), one Sr(1), one Ca(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(3), two equivalent Ba(2), one Sr(1), one Ca(2), and one W(1) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(2), two equivalent Ba(3), one Ca(1), and one W(1) atom to form distorted corner-sharing OBa4CaW octahedra. The corner-sharing octahedral tilt angles are 7°. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), two equivalent Sr(1), one Ca(2), and one W(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Sr(1), one Ca(2), and one W(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(3), one Ca(1), and one W(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(1), one Sr(1), one Ca(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(2), one Sr(1), one Ca(2), and one W(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Sr(1), one Ca(2), and one W(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(3), one Ca(1), and one W(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(1), one Sr(1), one Ca(1), and one W(2) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(2), one Sr(1), one Ca(2), and one W(1) atom.
Ba3SrCa2(WO6)2 crystallizes in the triclinic P1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), one O(9), two equivalent O(1), two equivalent O(11), and two equivalent O(7) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(1)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ca(2)O6 octahedra,  a faceface with one W(1)O6 octahedra, faces with three equivalent Ca(1)O6 octahedra, and faces with three equivalent W(2)O6 octahedra. The Ba(1)-O(10) bond length is 3.24 Å. The Ba(1)-O(3) bond length is 3.01 Å. The Ba(1)-O(4) bond length is 2.99 Å. The Ba(1)-O(5) bond length is 3.23 Å. The Ba(1)-O(6) bond length is 2.82 Å. The Ba(1)-O(9) bond length is 2.81 Å. Both Ba(1)-O(1) bond lengths are 3.00 Å. There is one shorter (2.81 Å) and one longer (3.23 Å) Ba(1)-O(11) bond length. There is one shorter (2.81 Å) and one longer (3.23 Å) Ba(1)-O(7) bond length. In the second Ba site, Ba(2) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), one O(9), two equivalent O(12), two equivalent O(2), and two equivalent O(8) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(1)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ca(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with three equivalent Ca(2)O6 octahedra, and faces with three equivalent W(1)O6 octahedra. The Ba(2)-O(10) bond length is 2.81 Å. The Ba(2)-O(3) bond length is 3.00 Å. The Ba(2)-O(4) bond length is 2.99 Å. The Ba(2)-O(5) bond length is 2.80 Å. The Ba(2)-O(6) bond length is 3.23 Å. The Ba(2)-O(9) bond length is 3.22 Å. There is one shorter (2.81 Å) and one longer (3.23 Å) Ba(2)-O(12) bond length. Both Ba(2)-O(2) bond lengths are 3.00 Å. There is one shorter (2.81 Å) and one longer (3.23 Å) Ba(2)-O(8) bond length. In the third Ba site, Ba(3) is bonded to one O(1), one O(11), one O(12), one O(2), one O(7), one O(8), two equivalent O(10), two equivalent O(3), and two equivalent O(6) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ca(2)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with three equivalent Ca(1)O6 octahedra, and faces with three equivalent W(1)O6 octahedra. The Ba(3)-O(1) bond length is 3.01 Å. The Ba(3)-O(11) bond length is 3.28 Å. The Ba(3)-O(12) bond length is 2.80 Å. The Ba(3)-O(2) bond length is 3.01 Å. The Ba(3)-O(7) bond length is 2.80 Å. The Ba(3)-O(8) bond length is 3.27 Å. There is one shorter (2.81 Å) and one longer (3.23 Å) Ba(3)-O(10) bond length. There is one shorter (2.99 Å) and one longer (3.00 Å) Ba(3)-O(3) bond length. There is one shorter (2.81 Å) and one longer (3.23 Å) Ba(3)-O(6) bond length. Sr(1) is bonded in a 12-coordinate geometry to one O(1), one O(11), one O(12), one O(2), one O(7), one O(8), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms. The Sr(1)-O(1) bond length is 2.98 Å. The Sr(1)-O(11) bond length is 2.77 Å. The Sr(1)-O(12) bond length is 3.23 Å. The Sr(1)-O(2) bond length is 2.98 Å. The Sr(1)-O(7) bond length is 3.23 Å. The Sr(1)-O(8) bond length is 2.76 Å. There is one shorter (2.99 Å) and one longer (3.00 Å) Sr(1)-O(4) bond length. There is one shorter (2.76 Å) and one longer (3.27 Å) Sr(1)-O(5) bond length. There is one shorter (2.76 Å) and one longer (3.27 Å) Sr(1)-O(9) bond length. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to one O(1), one O(10), one O(11), one O(3), one O(6), and one O(7) atom to form CaO6 octahedra that share corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, and faces with three equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. The Ca(1)-O(1) bond length is 2.31 Å. The Ca(1)-O(10) bond length is 2.32 Å. The Ca(1)-O(11) bond length is 2.32 Å. The Ca(1)-O(3) bond length is 2.31 Å. The Ca(1)-O(6) bond length is 2.32 Å. The Ca(1)-O(7) bond length is 2.31 Å. In the second Ca site, Ca(2) is bonded to one O(12), one O(2), one O(4), one O(5), one O(8), and one O(9) atom to form CaO6 octahedra that share corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. The Ca(2)-O(12) bond length is 2.31 Å. The Ca(2)-O(2) bond length is 2.30 Å. The Ca(2)-O(4) bond length is 2.30 Å. The Ca(2)-O(5) bond length is 2.31 Å. The Ca(2)-O(8) bond length is 2.31 Å. The Ca(2)-O(9) bond length is 2.31 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(6), and one O(8) atom to form WO6 octahedra that share corners with three equivalent Ca(1)O6 octahedra, corners with three equivalent Ca(2)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, and faces with three equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. The W(1)-O(10) bond length is 1.97 Å. The W(1)-O(12) bond length is 1.96 Å. The W(1)-O(2) bond length is 1.96 Å. The W(1)-O(3) bond length is 1.97 Å. The W(1)-O(6) bond length is 1.97 Å. The W(1)-O(8) bond length is 1.96 Å. In the second W site, W(2) is bonded to one O(1), one O(11), one O(4), one O(5), one O(7), and one O(9) atom to form WO6 octahedra that share corners with three equivalent Ca(1)O6 octahedra, corners with three equivalent Ca(2)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-18°. The W(2)-O(1) bond length is 1.97 Å. The W(2)-O(11) bond length is 1.97 Å. The W(2)-O(4) bond length is 1.96 Å. The W(2)-O(5) bond length is 1.96 Å. The W(2)-O(7) bond length is 1.97 Å. The W(2)-O(9) bond length is 1.96 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Ba(3), two equivalent Ba(1), one Sr(1), one Ca(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(3), two equivalent Ba(2), one Sr(1), one Ca(2), and one W(1) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(2), two equivalent Ba(3), one Ca(1), and one W(1) atom to form distorted corner-sharing OBa4CaW octahedra. The corner-sharing octahedral tilt angles are 7°. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), two equivalent Sr(1), one Ca(2), and one W(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Sr(1), one Ca(2), and one W(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(3), one Ca(1), and one W(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(1), one Sr(1), one Ca(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(2), one Sr(1), one Ca(2), and one W(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Sr(1), one Ca(2), and one W(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(3), one Ca(1), and one W(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(1), one Sr(1), one Ca(1), and one W(2) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ba(3), two equivalent Ba(2), one Sr(1), one Ca(2), and one W(1) atom.