Ba5V5O14 crystallizes in the triclinic P1 space group. There are ten inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(11), one O(13), one O(2), one O(4), one O(6), one O(8), two equivalent O(17), two equivalent O(21), and two equivalent O(25) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(1)O12 cuboctahedra, corners with three equivalent V(6)O6 octahedra, faces with three equivalent Ba(10)O12 cuboctahedra, faces with three equivalent V(3)O6 octahedra, faces with three equivalent V(5)O6 octahedra, and  a faceface with one V(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 7-10°. In the second Ba site, Ba(2) is bonded in a 11-coordinate geometry to one O(11), one O(14), one O(24), one O(4), one O(6), two equivalent O(15), two equivalent O(19), and two equivalent O(27) atoms. In the third Ba site, Ba(3) is bonded to one O(10), one O(12), one O(3), one O(5), one O(7), one O(9), two equivalent O(18), two equivalent O(22), and two equivalent O(26) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(3)O12 cuboctahedra, corners with three equivalent V(4)O6 octahedra, faces with three equivalent V(7)O6 octahedra, faces with three equivalent V(8)O6 octahedra, and  a faceface with one V(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 9-11°. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(5), one O(7), two equivalent O(16), two equivalent O(20), and two equivalent O(28) atoms. In the fifth Ba site, Ba(5) is bonded in a distorted q6 geometry to one O(13), one O(16), one O(2), one O(20), one O(28), one O(8), two equivalent O(1), and two equivalent O(23) atoms. In the sixth Ba site, Ba(6) is bonded in a distorted q6 geometry to one O(12), one O(15), one O(19), one O(27), one O(3), one O(9), two equivalent O(14), and two equivalent O(24) atoms. In the seventh Ba site, Ba(7) is bonded in a 11-coordinate geometry to one O(1), one O(17), one O(21), one O(23), one O(25), two equivalent O(13), two equivalent O(2), and two equivalent O(8) atoms. In the eighth Ba site, Ba(8) is bonded in a 11-coordinate geometry to one O(14), one O(18), one O(22), one O(24), one O(26), two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms. In the ninth Ba site, Ba(9) is bonded in a 12-coordinate geometry to one O(16), one O(18), one O(20), one O(22), one O(26), one O(28), two equivalent O(10), two equivalent O(5), and two equivalent O(7) atoms. In the tenth Ba site, Ba(10) is bonded to one O(15), one O(17), one O(19), one O(21), one O(25), one O(27), two equivalent O(11), two equivalent O(4), and two equivalent O(6) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(10)O12 cuboctahedra, corners with three equivalent V(3)O6 octahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent V(5)O6 octahedra, faces with three equivalent V(6)O6 octahedra, and  a faceface with one V(9)O5 square pyramid. The corner-sharing octahedral tilt angles range from 7-12°. There are ten inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(13), one O(2), one O(23), and one O(8) atom to form VO5 trigonal bipyramids that share corners with three equivalent V(3)O6 octahedra, corners with two equivalent V(10)O5 trigonal bipyramids, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 4-10°. In the second V site, V(2) is bonded to one O(12), one O(14), one O(24), one O(3), and one O(9) atom to form VO5 square pyramids that share corners with three equivalent V(7)O6 octahedra, corners with two equivalent V(9)O5 square pyramids, and  a faceface with one Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-8°. In the third V site, V(3) is bonded to one O(13), one O(17), one O(2), one O(21), one O(25), and one O(8) atom to form VO6 octahedra that share corners with three equivalent Ba(10)O12 cuboctahedra, corners with three equivalent V(1)O5 trigonal bipyramids, faces with three equivalent Ba(1)O12 cuboctahedra, and  a faceface with one V(5)O6 octahedra. In the fourth V site, V(4) is bonded to one O(10), one O(16), one O(20), one O(28), one O(5), and one O(7) atom to form VO6 octahedra that share corners with three equivalent Ba(3)O12 cuboctahedra, corners with three equivalent V(10)O5 trigonal bipyramids, and  a faceface with one V(8)O6 octahedra. In the fifth V site, V(5) is bonded to one O(11), one O(17), one O(21), one O(25), one O(4), and one O(6) atom to form VO6 octahedra that share faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(10)O12 cuboctahedra,  a faceface with one V(3)O6 octahedra, and  a faceface with one V(6)O6 octahedra. In the sixth V site, V(6) is bonded to one O(11), one O(15), one O(19), one O(27), one O(4), and one O(6) atom to form VO6 octahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent V(9)O5 square pyramids, faces with three equivalent Ba(10)O12 cuboctahedra, and  a faceface with one V(5)O6 octahedra. In the seventh V site, V(7) is bonded to one O(12), one O(18), one O(22), one O(26), one O(3), and one O(9) atom to form VO6 octahedra that share corners with three equivalent V(2)O5 square pyramids, faces with three equivalent Ba(3)O12 cuboctahedra, and  a faceface with one V(8)O6 octahedra. In the eighth V site, V(8) is bonded to one O(10), one O(18), one O(22), one O(26), one O(5), and one O(7) atom to form VO6 octahedra that share faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one V(4)O6 octahedra, and  a faceface with one V(7)O6 octahedra. In the ninth V site, V(9) is bonded to one O(14), one O(15), one O(19), one O(24), and one O(27) atom to form distorted VO5 square pyramids that share corners with three equivalent V(6)O6 octahedra, corners with two equivalent V(2)O5 square pyramids, and  a faceface with one Ba(10)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 9-19°. In the tenth V site, V(10) is bonded to one O(1), one O(16), one O(20), one O(23), and one O(28) atom to form VO5 trigonal bipyramids that share corners with three equivalent V(4)O6 octahedra and corners with two equivalent V(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 5-20°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ba(4), one Ba(7), two equivalent Ba(5), one V(1), and one V(10) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(1), one Ba(5), two equivalent Ba(7), one V(1), and one V(3) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Ba(3), one Ba(6), two equivalent Ba(8), one V(2), and one V(7) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(10), one V(5), and one V(6) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(9), one V(4), and one V(8) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(10), one V(5), and one V(6) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(9), one V(4), and one V(8) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Ba(1), one Ba(5), two equivalent Ba(7), one V(1), and one V(3) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Ba(3), one Ba(6), two equivalent Ba(8), one V(2), and one V(7) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(9), one V(4), and one V(8) atom. In the eleventh O site, O(11) is bonded to one Ba(1), one Ba(2), two equivalent Ba(10), one V(5), and one V(6) atom to form a mixture of distorted corner and edge-sharing OBa4V2 octahedra. The corner-sharing octahedral tilt angles range from 2-10°. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(3), one Ba(6), two equivalent Ba(8), one V(2), and one V(7) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(5), two equivalent Ba(7), one V(1), and one V(3) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(2), one Ba(8), two equivalent Ba(6), one V(2), and one V(9) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(6), two equivalent Ba(2), one V(6), and one V(9) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Ba(5), one Ba(9), two equivalent Ba(4), one V(10), and one V(4) atom. In the seventeenth O site, O(17) is bonded to one Ba(10), one Ba(7), two equivalent Ba(1), one V(3), and one V(5) atom to form a mixture of distorted corner and edge-sharing OBa4V2 octahedra. The corner-sharing octahedral tilt angles range from 2-11°. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Ba(8), one Ba(9), two equivalent Ba(3), one V(7), and one V(8) atom. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(6), two equivalent Ba(2), one V(6), and one V(9) atom. In the twentieth O site, O(20) is bonded in a 2-coordinate geometry to one Ba(5), one Ba(9), two equivalent Ba(4), one V(10), and one V(4) atom. In the twenty-first O site, O(21) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(7), two equivalent Ba(1), one V(3), and one V(5) atom. In the twenty-second O site, O(22) is bonded in a 2-coordinate geometry to one Ba(8), one Ba(9), two equivalent Ba(3), one V(7), and one V(8) atom. In the twenty-third O site, O(23) is bonded in a 2-coordinate geometry to one Ba(7), two equivalent Ba(5), one V(1), and one V(10) atom. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Ba(2), one Ba(8), two equivalent Ba(6), one V(2), and one V(9) atom. In the twenty-fifth O site, O(25) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(7), two equivalent Ba(1), one V(3), and one V(5) atom. In the twenty-sixth O site, O(26) is bonded to one Ba(8), one Ba(9), two equivalent Ba(3), one V(7), and one V(8) atom to form distorted corner-sharing OBa4V2 octahedra. The corner-sharing octahedral tilt angles are 10°. In the twenty-seventh O site, O(27) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(6), two equivalent Ba(2), one V(6), and one V(9) atom. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to one Ba(5), one Ba(9), two equivalent Ba(4), one V(10), and one V(4) atom.
Ba5V5O14 crystallizes in the triclinic P1 space group. There are ten inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(11), one O(13), one O(2), one O(4), one O(6), one O(8), two equivalent O(17), two equivalent O(21), and two equivalent O(25) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(1)O12 cuboctahedra, corners with three equivalent V(6)O6 octahedra, faces with three equivalent Ba(10)O12 cuboctahedra, faces with three equivalent V(3)O6 octahedra, faces with three equivalent V(5)O6 octahedra, and  a faceface with one V(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 7-10°. The Ba(1)-O(11) bond length is 2.90 Å. The Ba(1)-O(13) bond length is 3.15 Å. The Ba(1)-O(2) bond length is 3.08 Å. The Ba(1)-O(4) bond length is 3.00 Å. The Ba(1)-O(6) bond length is 2.90 Å. The Ba(1)-O(8) bond length is 3.16 Å. There is one shorter (2.89 Å) and one longer (2.92 Å) Ba(1)-O(17) bond length. There is one shorter (2.88 Å) and one longer (2.98 Å) Ba(1)-O(21) bond length. There is one shorter (2.92 Å) and one longer (2.93 Å) Ba(1)-O(25) bond length. In the second Ba site, Ba(2) is bonded in a 11-coordinate geometry to one O(11), one O(14), one O(24), one O(4), one O(6), two equivalent O(15), two equivalent O(19), and two equivalent O(27) atoms. The Ba(2)-O(11) bond length is 2.68 Å. The Ba(2)-O(14) bond length is 3.24 Å. The Ba(2)-O(24) bond length is 3.24 Å. The Ba(2)-O(4) bond length is 2.72 Å. The Ba(2)-O(6) bond length is 2.83 Å. There is one shorter (2.89 Å) and one longer (2.94 Å) Ba(2)-O(15) bond length. There is one shorter (2.82 Å) and one longer (3.12 Å) Ba(2)-O(19) bond length. There is one shorter (2.82 Å) and one longer (3.06 Å) Ba(2)-O(27) bond length. In the third Ba site, Ba(3) is bonded to one O(10), one O(12), one O(3), one O(5), one O(7), one O(9), two equivalent O(18), two equivalent O(22), and two equivalent O(26) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(3)O12 cuboctahedra, corners with three equivalent V(4)O6 octahedra, faces with three equivalent V(7)O6 octahedra, faces with three equivalent V(8)O6 octahedra, and  a faceface with one V(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 9-11°. The Ba(3)-O(10) bond length is 3.03 Å. The Ba(3)-O(12) bond length is 3.08 Å. The Ba(3)-O(3) bond length is 3.13 Å. The Ba(3)-O(5) bond length is 2.98 Å. The Ba(3)-O(7) bond length is 2.85 Å. The Ba(3)-O(9) bond length is 3.10 Å. Both Ba(3)-O(18) bond lengths are 2.91 Å. There is one shorter (2.88 Å) and one longer (2.99 Å) Ba(3)-O(22) bond length. There is one shorter (2.88 Å) and one longer (2.94 Å) Ba(3)-O(26) bond length. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(5), one O(7), two equivalent O(16), two equivalent O(20), and two equivalent O(28) atoms. The Ba(4)-O(1) bond length is 2.93 Å. The Ba(4)-O(10) bond length is 2.77 Å. The Ba(4)-O(5) bond length is 2.70 Å. The Ba(4)-O(7) bond length is 2.78 Å. There is one shorter (2.92 Å) and one longer (2.93 Å) Ba(4)-O(16) bond length. There is one shorter (2.82 Å) and one longer (3.15 Å) Ba(4)-O(20) bond length. There is one shorter (2.90 Å) and one longer (2.93 Å) Ba(4)-O(28) bond length. In the fifth Ba site, Ba(5) is bonded in a distorted q6 geometry to one O(13), one O(16), one O(2), one O(20), one O(28), one O(8), two equivalent O(1), and two equivalent O(23) atoms. The Ba(5)-O(13) bond length is 2.79 Å. The Ba(5)-O(16) bond length is 2.80 Å. The Ba(5)-O(2) bond length is 2.86 Å. The Ba(5)-O(20) bond length is 2.75 Å. The Ba(5)-O(28) bond length is 2.88 Å. The Ba(5)-O(8) bond length is 2.80 Å. There is one shorter (2.84 Å) and one longer (2.96 Å) Ba(5)-O(1) bond length. There is one shorter (2.83 Å) and one longer (3.05 Å) Ba(5)-O(23) bond length. In the sixth Ba site, Ba(6) is bonded in a distorted q6 geometry to one O(12), one O(15), one O(19), one O(27), one O(3), one O(9), two equivalent O(14), and two equivalent O(24) atoms. The Ba(6)-O(12) bond length is 2.80 Å. The Ba(6)-O(15) bond length is 2.92 Å. The Ba(6)-O(19) bond length is 2.76 Å. The Ba(6)-O(27) bond length is 2.79 Å. The Ba(6)-O(3) bond length is 2.79 Å. The Ba(6)-O(9) bond length is 2.82 Å. There is one shorter (2.85 Å) and one longer (2.96 Å) Ba(6)-O(14) bond length. There is one shorter (2.84 Å) and one longer (3.00 Å) Ba(6)-O(24) bond length. In the seventh Ba site, Ba(7) is bonded in a 11-coordinate geometry to one O(1), one O(17), one O(21), one O(23), one O(25), two equivalent O(13), two equivalent O(2), and two equivalent O(8) atoms. The Ba(7)-O(1) bond length is 3.30 Å. The Ba(7)-O(17) bond length is 2.78 Å. The Ba(7)-O(21) bond length is 2.85 Å. The Ba(7)-O(23) bond length is 2.87 Å. The Ba(7)-O(25) bond length is 2.71 Å. There is one shorter (2.90 Å) and one longer (2.94 Å) Ba(7)-O(13) bond length. There is one shorter (2.90 Å) and one longer (2.92 Å) Ba(7)-O(2) bond length. There is one shorter (2.87 Å) and one longer (3.03 Å) Ba(7)-O(8) bond length. In the eighth Ba site, Ba(8) is bonded in a 11-coordinate geometry to one O(14), one O(18), one O(22), one O(24), one O(26), two equivalent O(12), two equivalent O(3), and two equivalent O(9) atoms. The Ba(8)-O(14) bond length is 3.02 Å. The Ba(8)-O(18) bond length is 2.74 Å. The Ba(8)-O(22) bond length is 2.83 Å. The Ba(8)-O(24) bond length is 3.04 Å. The Ba(8)-O(26) bond length is 2.80 Å. There is one shorter (2.88 Å) and one longer (2.93 Å) Ba(8)-O(12) bond length. There is one shorter (2.89 Å) and one longer (2.96 Å) Ba(8)-O(3) bond length. There is one shorter (2.92 Å) and one longer (2.97 Å) Ba(8)-O(9) bond length. In the ninth Ba site, Ba(9) is bonded in a 12-coordinate geometry to one O(16), one O(18), one O(20), one O(22), one O(26), one O(28), two equivalent O(10), two equivalent O(5), and two equivalent O(7) atoms. The Ba(9)-O(16) bond length is 3.14 Å. The Ba(9)-O(18) bond length is 3.03 Å. The Ba(9)-O(20) bond length is 3.33 Å. The Ba(9)-O(22) bond length is 2.87 Å. The Ba(9)-O(26) bond length is 2.92 Å. The Ba(9)-O(28) bond length is 3.10 Å. There is one shorter (2.90 Å) and one longer (2.92 Å) Ba(9)-O(10) bond length. There is one shorter (2.90 Å) and one longer (2.94 Å) Ba(9)-O(5) bond length. There is one shorter (2.85 Å) and one longer (3.00 Å) Ba(9)-O(7) bond length. In the tenth Ba site, Ba(10) is bonded to one O(15), one O(17), one O(19), one O(21), one O(25), one O(27), two equivalent O(11), two equivalent O(4), and two equivalent O(6) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Ba(10)O12 cuboctahedra, corners with three equivalent V(3)O6 octahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent V(5)O6 octahedra, faces with three equivalent V(6)O6 octahedra, and  a faceface with one V(9)O5 square pyramid. The corner-sharing octahedral tilt angles range from 7-12°. The Ba(10)-O(15) bond length is 3.03 Å. The Ba(10)-O(17) bond length is 2.93 Å. The Ba(10)-O(19) bond length is 3.29 Å. The Ba(10)-O(21) bond length is 2.87 Å. The Ba(10)-O(25) bond length is 3.02 Å. The Ba(10)-O(27) bond length is 3.22 Å. There is one shorter (2.88 Å) and one longer (2.93 Å) Ba(10)-O(11) bond length. There is one shorter (2.91 Å) and one longer (2.92 Å) Ba(10)-O(4) bond length. There is one shorter (2.85 Å) and one longer (3.01 Å) Ba(10)-O(6) bond length. There are ten inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(13), one O(2), one O(23), and one O(8) atom to form VO5 trigonal bipyramids that share corners with three equivalent V(3)O6 octahedra, corners with two equivalent V(10)O5 trigonal bipyramids, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 4-10°. The V(1)-O(1) bond length is 1.95 Å. The V(1)-O(13) bond length is 2.03 Å. The V(1)-O(2) bond length is 1.97 Å. The V(1)-O(23) bond length is 2.26 Å. The V(1)-O(8) bond length is 1.93 Å. In the second V site, V(2) is bonded to one O(12), one O(14), one O(24), one O(3), and one O(9) atom to form VO5 square pyramids that share corners with three equivalent V(7)O6 octahedra, corners with two equivalent V(9)O5 square pyramids, and  a faceface with one Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-8°. The V(2)-O(12) bond length is 1.98 Å. The V(2)-O(14) bond length is 2.09 Å. The V(2)-O(24) bond length is 2.06 Å. The V(2)-O(3) bond length is 1.99 Å. The V(2)-O(9) bond length is 1.98 Å. In the third V site, V(3) is bonded to one O(13), one O(17), one O(2), one O(21), one O(25), and one O(8) atom to form VO6 octahedra that share corners with three equivalent Ba(10)O12 cuboctahedra, corners with three equivalent V(1)O5 trigonal bipyramids, faces with three equivalent Ba(1)O12 cuboctahedra, and  a faceface with one V(5)O6 octahedra. The V(3)-O(13) bond length is 2.03 Å. The V(3)-O(17) bond length is 2.06 Å. The V(3)-O(2) bond length is 1.86 Å. The V(3)-O(21) bond length is 2.06 Å. The V(3)-O(25) bond length is 1.93 Å. The V(3)-O(8) bond length is 2.01 Å. In the fourth V site, V(4) is bonded to one O(10), one O(16), one O(20), one O(28), one O(5), and one O(7) atom to form VO6 octahedra that share corners with three equivalent Ba(3)O12 cuboctahedra, corners with three equivalent V(10)O5 trigonal bipyramids, and  a faceface with one V(8)O6 octahedra. The V(4)-O(10) bond length is 2.09 Å. The V(4)-O(16) bond length is 2.00 Å. The V(4)-O(20) bond length is 2.20 Å. The V(4)-O(28) bond length is 2.00 Å. The V(4)-O(5) bond length is 1.99 Å. The V(4)-O(7) bond length is 2.07 Å. In the fifth V site, V(5) is bonded to one O(11), one O(17), one O(21), one O(25), one O(4), and one O(6) atom to form VO6 octahedra that share faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(10)O12 cuboctahedra,  a faceface with one V(3)O6 octahedra, and  a faceface with one V(6)O6 octahedra. The V(5)-O(11) bond length is 2.00 Å. The V(5)-O(17) bond length is 1.97 Å. The V(5)-O(21) bond length is 1.93 Å. The V(5)-O(25) bond length is 2.05 Å. The V(5)-O(4) bond length is 1.95 Å. The V(5)-O(6) bond length is 1.89 Å. In the sixth V site, V(6) is bonded to one O(11), one O(15), one O(19), one O(27), one O(4), and one O(6) atom to form VO6 octahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent V(9)O5 square pyramids, faces with three equivalent Ba(10)O12 cuboctahedra, and  a faceface with one V(5)O6 octahedra. The V(6)-O(11) bond length is 2.06 Å. The V(6)-O(15) bond length is 2.10 Å. The V(6)-O(19) bond length is 2.00 Å. The V(6)-O(27) bond length is 2.02 Å. The V(6)-O(4) bond length is 2.04 Å. The V(6)-O(6) bond length is 2.10 Å. In the seventh V site, V(7) is bonded to one O(12), one O(18), one O(22), one O(26), one O(3), and one O(9) atom to form VO6 octahedra that share corners with three equivalent V(2)O5 square pyramids, faces with three equivalent Ba(3)O12 cuboctahedra, and  a faceface with one V(8)O6 octahedra. The V(7)-O(12) bond length is 1.85 Å. The V(7)-O(18) bond length is 1.97 Å. The V(7)-O(22) bond length is 2.03 Å. The V(7)-O(26) bond length is 2.02 Å. The V(7)-O(3) bond length is 2.06 Å. The V(7)-O(9) bond length is 2.01 Å. In the eighth V site, V(8) is bonded to one O(10), one O(18), one O(22), one O(26), one O(5), and one O(7) atom to form VO6 octahedra that share faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one V(4)O6 octahedra, and  a faceface with one V(7)O6 octahedra. The V(8)-O(10) bond length is 1.88 Å. The V(8)-O(18) bond length is 2.01 Å. The V(8)-O(22) bond length is 1.96 Å. The V(8)-O(26) bond length is 1.98 Å. The V(8)-O(5) bond length is 2.01 Å. The V(8)-O(7) bond length is 1.95 Å. In the ninth V site, V(9) is bonded to one O(14), one O(15), one O(19), one O(24), and one O(27) atom to form distorted VO5 square pyramids that share corners with three equivalent V(6)O6 octahedra, corners with two equivalent V(2)O5 square pyramids, and  a faceface with one Ba(10)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 9-19°. The V(9)-O(14) bond length is 2.00 Å. The V(9)-O(15) bond length is 1.76 Å. The V(9)-O(19) bond length is 1.97 Å. The V(9)-O(24) bond length is 1.98 Å. The V(9)-O(27) bond length is 2.00 Å. In the tenth V site, V(10) is bonded to one O(1), one O(16), one O(20), one O(23), and one O(28) atom to form VO5 trigonal bipyramids that share corners with three equivalent V(4)O6 octahedra and corners with two equivalent V(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 5-20°. The V(10)-O(1) bond length is 2.20 Å. The V(10)-O(16) bond length is 1.98 Å. The V(10)-O(20) bond length is 1.85 Å. The V(10)-O(23) bond length is 1.86 Å. The V(10)-O(28) bond length is 1.85 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ba(4), one Ba(7), two equivalent Ba(5), one V(1), and one V(10) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(1), one Ba(5), two equivalent Ba(7), one V(1), and one V(3) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Ba(3), one Ba(6), two equivalent Ba(8), one V(2), and one V(7) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(10), one V(5), and one V(6) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(9), one V(4), and one V(8) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(10), one V(5), and one V(6) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(9), one V(4), and one V(8) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Ba(1), one Ba(5), two equivalent Ba(7), one V(1), and one V(3) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Ba(3), one Ba(6), two equivalent Ba(8), one V(2), and one V(7) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(9), one V(4), and one V(8) atom. In the eleventh O site, O(11) is bonded to one Ba(1), one Ba(2), two equivalent Ba(10), one V(5), and one V(6) atom to form a mixture of distorted corner and edge-sharing OBa4V2 octahedra. The corner-sharing octahedral tilt angles range from 2-10°. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(3), one Ba(6), two equivalent Ba(8), one V(2), and one V(7) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(5), two equivalent Ba(7), one V(1), and one V(3) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(2), one Ba(8), two equivalent Ba(6), one V(2), and one V(9) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(6), two equivalent Ba(2), one V(6), and one V(9) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Ba(5), one Ba(9), two equivalent Ba(4), one V(10), and one V(4) atom. In the seventeenth O site, O(17) is bonded to one Ba(10), one Ba(7), two equivalent Ba(1), one V(3), and one V(5) atom to form a mixture of distorted corner and edge-sharing OBa4V2 octahedra. The corner-sharing octahedral tilt angles range from 2-11°. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Ba(8), one Ba(9), two equivalent Ba(3), one V(7), and one V(8) atom. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(6), two equivalent Ba(2), one V(6), and one V(9) atom. In the twentieth O site, O(20) is bonded in a 2-coordinate geometry to one Ba(5), one Ba(9), two equivalent Ba(4), one V(10), and one V(4) atom. In the twenty-first O site, O(21) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(7), two equivalent Ba(1), one V(3), and one V(5) atom. In the twenty-second O site, O(22) is bonded in a 2-coordinate geometry to one Ba(8), one Ba(9), two equivalent Ba(3), one V(7), and one V(8) atom. In the twenty-third O site, O(23) is bonded in a 2-coordinate geometry to one Ba(7), two equivalent Ba(5), one V(1), and one V(10) atom. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Ba(2), one Ba(8), two equivalent Ba(6), one V(2), and one V(9) atom. In the twenty-fifth O site, O(25) is bonded in a 6-coordinate geometry to one Ba(10), one Ba(7), two equivalent Ba(1), one V(3), and one V(5) atom. In the twenty-sixth O site, O(26) is bonded to one Ba(8), one Ba(9), two equivalent Ba(3), one V(7), and one V(8) atom to form distorted corner-sharing OBa4V2 octahedra. The corner-sharing octahedral tilt angles are 10°. In the twenty-seventh O site, O(27) is bonded in a 2-coordinate geometry to one Ba(10), one Ba(6), two equivalent Ba(2), one V(6), and one V(9) atom. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to one Ba(5), one Ba(9), two equivalent Ba(4), one V(10), and one V(4) atom.