Ba3Te4O11 crystallizes in the triclinic P-1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(2), one O(4), one O(8), two equivalent O(3), and two equivalent O(5) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), one O(9), and two equivalent O(11) atoms. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), one O(6), one O(8), one O(9), and two equivalent O(7) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(8), and one O(9) atom. In the second Te site, Te(2) is bonded in a see-saw-like geometry to one O(10), one O(11), one O(6), and one O(7) atom. In the third Te site, Te(3) is bonded in a distorted trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. There are eleven inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to one Ba(1), one Te(1), and one Te(2) atom. In the second O site, O(11) is bonded in a 4-coordinate geometry to one Ba(1), two equivalent Ba(2), and one Te(2) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(3), one Te(1), and one Te(4) atom. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), and one Te(4) atom. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to one Ba(2), two equivalent Ba(1), and one Te(4) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), and one Te(3) atom. In the seventh O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one Te(3), and one Te(4) atom. In the eighth O site, O(6) is bonded in a 3-coordinate geometry to one Ba(3), one Te(2), and one Te(3) atom. In the ninth O site, O(7) is bonded to one Ba(2), two equivalent Ba(3), and one Te(2) atom to form distorted edge-sharing OBa3Te tetrahedra. In the tenth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ba(1), one Ba(3), and one Te(1) atom. In the eleventh O site, O(9) is bonded in a 3-coordinate geometry to one Ba(2), one Ba(3), and one Te(1) atom.
Ba3Te4O11 crystallizes in the triclinic P-1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(2), one O(4), one O(8), two equivalent O(3), and two equivalent O(5) atoms. The Ba(1)-O(10) bond length is 3.01 Å. The Ba(1)-O(11) bond length is 3.28 Å. The Ba(1)-O(2) bond length is 3.35 Å. The Ba(1)-O(4) bond length is 2.83 Å. The Ba(1)-O(8) bond length is 2.68 Å. There is one shorter (2.73 Å) and one longer (2.82 Å) Ba(1)-O(3) bond length. There is one shorter (2.74 Å) and one longer (2.92 Å) Ba(1)-O(5) bond length. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), one O(9), and two equivalent O(11) atoms. The Ba(2)-O(1) bond length is 2.85 Å. The Ba(2)-O(2) bond length is 2.99 Å. The Ba(2)-O(3) bond length is 3.21 Å. The Ba(2)-O(4) bond length is 2.73 Å. The Ba(2)-O(7) bond length is 2.81 Å. The Ba(2)-O(9) bond length is 2.66 Å. There is one shorter (2.66 Å) and one longer (2.95 Å) Ba(2)-O(11) bond length. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), one O(6), one O(8), one O(9), and two equivalent O(7) atoms. The Ba(3)-O(1) bond length is 2.80 Å. The Ba(3)-O(2) bond length is 2.85 Å. The Ba(3)-O(4) bond length is 2.86 Å. The Ba(3)-O(6) bond length is 2.78 Å. The Ba(3)-O(8) bond length is 2.67 Å. The Ba(3)-O(9) bond length is 2.73 Å. There is one shorter (2.75 Å) and one longer (2.82 Å) Ba(3)-O(7) bond length. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(8), and one O(9) atom. The Te(1)-O(1) bond length is 2.55 Å. The Te(1)-O(10) bond length is 1.98 Å. The Te(1)-O(8) bond length is 1.84 Å. The Te(1)-O(9) bond length is 1.86 Å. In the second Te site, Te(2) is bonded in a see-saw-like geometry to one O(10), one O(11), one O(6), and one O(7) atom. The Te(2)-O(10) bond length is 2.05 Å. The Te(2)-O(11) bond length is 1.86 Å. The Te(2)-O(6) bond length is 2.26 Å. The Te(2)-O(7) bond length is 1.86 Å. In the third Te site, Te(3) is bonded in a distorted trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. The Te(3)-O(4) bond length is 1.86 Å. The Te(3)-O(5) bond length is 1.86 Å. The Te(3)-O(6) bond length is 1.89 Å. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. The Te(4)-O(1) bond length is 1.90 Å. The Te(4)-O(2) bond length is 1.87 Å. The Te(4)-O(3) bond length is 1.87 Å. The Te(4)-O(5) bond length is 2.72 Å. There are eleven inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to one Ba(1), one Te(1), and one Te(2) atom. In the second O site, O(11) is bonded in a 4-coordinate geometry to one Ba(1), two equivalent Ba(2), and one Te(2) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(3), one Te(1), and one Te(4) atom. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), and one Te(4) atom. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to one Ba(2), two equivalent Ba(1), and one Te(4) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), and one Te(3) atom. In the seventh O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Ba(1), one Te(3), and one Te(4) atom. In the eighth O site, O(6) is bonded in a 3-coordinate geometry to one Ba(3), one Te(2), and one Te(3) atom. In the ninth O site, O(7) is bonded to one Ba(2), two equivalent Ba(3), and one Te(2) atom to form distorted edge-sharing OBa3Te tetrahedra. In the tenth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ba(1), one Ba(3), and one Te(1) atom. In the eleventh O site, O(9) is bonded in a 3-coordinate geometry to one Ba(2), one Ba(3), and one Te(1) atom.