Ba8Tl2Pb4Bi2O17 crystallizes in the triclinic P1 space group. There are eight inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(16), one O(17), one O(3), and one O(5) atom. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(2), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. In the third Ba site, Ba(3) is bonded in a 7-coordinate geometry to one O(1), one O(13), one O(16), one O(17), one O(2), one O(3), and one O(5) atom. In the fourth Ba site, Ba(4) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(4), one O(6), and one O(9) atom. In the fifth Ba site, Ba(5) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom. In the sixth Ba site, Ba(6) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(14), one O(15), one O(16), one O(17), and one O(8) atom. In the seventh Ba site, Ba(7) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(12), one O(4), one O(6), and one O(9) atom. In the eighth Ba site, Ba(8) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(13), one O(14), one O(15), one O(16), and one O(8) atom. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a distorted see-saw-like geometry to one O(11), one O(4), one O(6), and one O(9) atom. In the second Tl site, Tl(2) is bonded in a see-saw-like geometry to one O(13), one O(15), one O(16), and one O(17) atom. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(7) atom. In the second Pb site, Pb(2) is bonded in a distorted see-saw-like geometry to one O(11), one O(4), one O(6), and one O(9) atom. In the third Pb site, Pb(3) is bonded in a distorted rectangular see-saw-like geometry to one O(13), one O(16), one O(17), and one O(3) atom. In the fourth Pb site, Pb(4) is bonded in a 4-coordinate geometry to one O(10), one O(12), one O(14), and one O(8) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a square pyramidal geometry to one O(1), one O(2), one O(3), one O(5), and one O(7) atom. In the second Bi site, Bi(2) is bonded in a square pyramidal geometry to one O(10), one O(12), one O(14), one O(15), and one O(8) atom. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(5), one Pb(1), and one Bi(1) atom to form distorted OBa4BiPb octahedra that share corners with two equivalent O(6)Ba4TlPb octahedra, corners with two equivalent O(9)Ba4TlPb octahedra, corners with three equivalent O(3)Ba2BiPb tetrahedra, corners with four equivalent O(7)Ba2BiPb trigonal pyramids, and faces with two equivalent O(5)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 58-69°. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one Pb(1), and one Bi(1) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(3), one Pb(3), and one Bi(1) atom to form distorted OBa2BiPb tetrahedra that share  a cornercorner with one O(5)Ba4BiPb octahedra, corners with three equivalent O(1)Ba4BiPb octahedra,  a cornercorner with one O(7)Ba2BiPb trigonal pyramid, and  an edgeedge with one O(5)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 49-76°. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(4), one Ba(7), one Tl(1), and one Pb(2) atom. In the fifth O site, O(5) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(5), one Pb(1), and one Bi(1) atom to form OBa4BiPb octahedra that share corners with two equivalent O(9)Ba4TlPb octahedra,  a cornercorner with one O(3)Ba2BiPb tetrahedra,  an edgeedge with one O(6)Ba4TlPb octahedra,  an edgeedge with one O(3)Ba2BiPb tetrahedra, edges with two equivalent O(7)Ba2BiPb trigonal pyramids, and faces with two equivalent O(1)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 4-8°. In the sixth O site, O(6) is bonded to one Ba(2), one Ba(4), one Ba(5), one Ba(7), one Tl(1), and one Pb(2) atom to form distorted OBa4TlPb octahedra that share corners with two equivalent O(1)Ba4BiPb octahedra, corners with two equivalent O(9)Ba4TlPb octahedra, corners with two equivalent O(7)Ba2BiPb trigonal pyramids,  an edgeedge with one O(12)Ba4BiPb octahedra,  an edgeedge with one O(5)Ba4BiPb octahedra, and edges with two equivalent O(9)Ba4TlPb octahedra. The corner-sharing octahedral tilt angles range from 25-63°. In the seventh O site, O(7) is bonded to one Ba(2), one Ba(5), one Pb(1), and one Bi(1) atom to form distorted OBa2BiPb trigonal pyramids that share corners with two equivalent O(6)Ba4TlPb octahedra, corners with two equivalent O(9)Ba4TlPb octahedra, corners with four equivalent O(1)Ba4BiPb octahedra,  a cornercorner with one O(3)Ba2BiPb tetrahedra, and edges with two equivalent O(5)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 13-74°. In the eighth O site, O(8) is bonded to one Ba(6), one Ba(8), one Pb(4), and one Bi(2) atom to form distorted OBa2BiPb trigonal pyramids that share corners with three equivalent O(15)Ba2TlBi tetrahedra and edges with two equivalent O(12)Ba4BiPb octahedra. In the ninth O site, O(9) is bonded to one Ba(2), one Ba(4), one Ba(5), one Ba(7), one Tl(1), and one Pb(2) atom to form distorted OBa4TlPb octahedra that share corners with two equivalent O(1)Ba4BiPb octahedra, corners with two equivalent O(12)Ba4BiPb octahedra, corners with two equivalent O(5)Ba4BiPb octahedra, corners with two equivalent O(6)Ba4TlPb octahedra, corners with two equivalent O(7)Ba2BiPb trigonal pyramids, and edges with two equivalent O(6)Ba4TlPb octahedra. The corner-sharing octahedral tilt angles range from 4-69°. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Ba(6), one Ba(7), one Ba(8), one Pb(4), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(4), one Ba(7), one Tl(1), and one Pb(2) atom. In the twelfth O site, O(12) is bonded to one Ba(4), one Ba(6), one Ba(7), one Ba(8), one Pb(4), and one Bi(2) atom to form distorted OBa4BiPb octahedra that share corners with two equivalent O(9)Ba4TlPb octahedra,  a cornercorner with one O(15)Ba2TlBi tetrahedra,  an edgeedge with one O(6)Ba4TlPb octahedra,  an edgeedge with one O(15)Ba2TlBi tetrahedra, and edges with two equivalent O(8)Ba2BiPb trigonal pyramids. The corner-sharing octahedral tilt angles range from 8-11°. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(3), one Ba(8), one Tl(2), and one Pb(3) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ba(4), one Ba(6), one Ba(8), one Pb(4), and one Bi(2) atom. In the fifteenth O site, O(15) is bonded to one Ba(6), one Ba(8), one Tl(2), and one Bi(2) atom to form distorted OBa2TlBi tetrahedra that share  a cornercorner with one O(12)Ba4BiPb octahedra, corners with three equivalent O(8)Ba2BiPb trigonal pyramids, and  an edgeedge with one O(12)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles are 59°. In the sixteenth O site, O(16) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Ba(6), one Ba(8), one Tl(2), and one Pb(3) atom. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(3), one Ba(6), one Tl(2), and one Pb(3) atom.
Ba8Tl2Pb4Bi2O17 crystallizes in the triclinic P1 space group. There are eight inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(16), one O(17), one O(3), and one O(5) atom. The Ba(1)-O(1) bond length is 2.88 Å. The Ba(1)-O(13) bond length is 2.68 Å. The Ba(1)-O(16) bond length is 2.73 Å. The Ba(1)-O(17) bond length is 2.97 Å. The Ba(1)-O(3) bond length is 2.92 Å. The Ba(1)-O(5) bond length is 3.04 Å. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(2), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. The Ba(2)-O(1) bond length is 3.31 Å. The Ba(2)-O(11) bond length is 3.32 Å. The Ba(2)-O(2) bond length is 2.76 Å. The Ba(2)-O(4) bond length is 3.27 Å. The Ba(2)-O(5) bond length is 2.79 Å. The Ba(2)-O(6) bond length is 2.96 Å. The Ba(2)-O(7) bond length is 2.70 Å. The Ba(2)-O(9) bond length is 3.14 Å. In the third Ba site, Ba(3) is bonded in a 7-coordinate geometry to one O(1), one O(13), one O(16), one O(17), one O(2), one O(3), and one O(5) atom. The Ba(3)-O(1) bond length is 3.09 Å. The Ba(3)-O(13) bond length is 2.80 Å. The Ba(3)-O(16) bond length is 3.36 Å. The Ba(3)-O(17) bond length is 2.66 Å. The Ba(3)-O(2) bond length is 3.04 Å. The Ba(3)-O(3) bond length is 2.81 Å. The Ba(3)-O(5) bond length is 2.94 Å. In the fourth Ba site, Ba(4) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(4), one O(6), and one O(9) atom. The Ba(4)-O(11) bond length is 2.80 Å. The Ba(4)-O(12) bond length is 3.18 Å. The Ba(4)-O(14) bond length is 2.96 Å. The Ba(4)-O(4) bond length is 2.70 Å. The Ba(4)-O(6) bond length is 2.72 Å. The Ba(4)-O(9) bond length is 2.75 Å. In the fifth Ba site, Ba(5) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom. The Ba(5)-O(1) bond length is 2.84 Å. The Ba(5)-O(2) bond length is 2.89 Å. The Ba(5)-O(5) bond length is 3.00 Å. The Ba(5)-O(6) bond length is 3.01 Å. The Ba(5)-O(7) bond length is 2.65 Å. The Ba(5)-O(9) bond length is 3.08 Å. In the sixth Ba site, Ba(6) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(14), one O(15), one O(16), one O(17), and one O(8) atom. The Ba(6)-O(10) bond length is 2.65 Å. The Ba(6)-O(12) bond length is 2.69 Å. The Ba(6)-O(14) bond length is 3.26 Å. The Ba(6)-O(15) bond length is 2.84 Å. The Ba(6)-O(16) bond length is 3.23 Å. The Ba(6)-O(17) bond length is 3.23 Å. The Ba(6)-O(8) bond length is 2.68 Å. In the seventh Ba site, Ba(7) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(12), one O(4), one O(6), and one O(9) atom. The Ba(7)-O(10) bond length is 3.17 Å. The Ba(7)-O(11) bond length is 2.70 Å. The Ba(7)-O(12) bond length is 2.94 Å. The Ba(7)-O(4) bond length is 2.66 Å. The Ba(7)-O(6) bond length is 2.83 Å. The Ba(7)-O(9) bond length is 2.81 Å. In the eighth Ba site, Ba(8) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(13), one O(14), one O(15), one O(16), and one O(8) atom. The Ba(8)-O(10) bond length is 2.74 Å. The Ba(8)-O(12) bond length is 3.19 Å. The Ba(8)-O(13) bond length is 3.20 Å. The Ba(8)-O(14) bond length is 2.72 Å. The Ba(8)-O(15) bond length is 2.91 Å. The Ba(8)-O(16) bond length is 3.07 Å. The Ba(8)-O(8) bond length is 2.63 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a distorted see-saw-like geometry to one O(11), one O(4), one O(6), and one O(9) atom. The Tl(1)-O(11) bond length is 2.46 Å. The Tl(1)-O(4) bond length is 2.46 Å. The Tl(1)-O(6) bond length is 2.46 Å. The Tl(1)-O(9) bond length is 2.46 Å. In the second Tl site, Tl(2) is bonded in a see-saw-like geometry to one O(13), one O(15), one O(16), and one O(17) atom. The Tl(2)-O(13) bond length is 2.28 Å. The Tl(2)-O(15) bond length is 2.24 Å. The Tl(2)-O(16) bond length is 2.29 Å. The Tl(2)-O(17) bond length is 2.29 Å. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(7) atom. The Pb(1)-O(1) bond length is 2.33 Å. The Pb(1)-O(2) bond length is 2.35 Å. The Pb(1)-O(5) bond length is 2.49 Å. The Pb(1)-O(7) bond length is 2.30 Å. In the second Pb site, Pb(2) is bonded in a distorted see-saw-like geometry to one O(11), one O(4), one O(6), and one O(9) atom. The Pb(2)-O(11) bond length is 2.28 Å. The Pb(2)-O(4) bond length is 2.32 Å. The Pb(2)-O(6) bond length is 2.40 Å. The Pb(2)-O(9) bond length is 2.32 Å. In the third Pb site, Pb(3) is bonded in a distorted rectangular see-saw-like geometry to one O(13), one O(16), one O(17), and one O(3) atom. The Pb(3)-O(13) bond length is 2.50 Å. The Pb(3)-O(16) bond length is 2.41 Å. The Pb(3)-O(17) bond length is 2.20 Å. The Pb(3)-O(3) bond length is 2.27 Å. In the fourth Pb site, Pb(4) is bonded in a 4-coordinate geometry to one O(10), one O(12), one O(14), and one O(8) atom. The Pb(4)-O(10) bond length is 2.33 Å. The Pb(4)-O(12) bond length is 2.55 Å. The Pb(4)-O(14) bond length is 2.31 Å. The Pb(4)-O(8) bond length is 2.35 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a square pyramidal geometry to one O(1), one O(2), one O(3), one O(5), and one O(7) atom. The Bi(1)-O(1) bond length is 2.31 Å. The Bi(1)-O(2) bond length is 2.35 Å. The Bi(1)-O(3) bond length is 2.20 Å. The Bi(1)-O(5) bond length is 2.35 Å. The Bi(1)-O(7) bond length is 2.33 Å. In the second Bi site, Bi(2) is bonded in a square pyramidal geometry to one O(10), one O(12), one O(14), one O(15), and one O(8) atom. The Bi(2)-O(10) bond length is 2.50 Å. The Bi(2)-O(12) bond length is 2.25 Å. The Bi(2)-O(14) bond length is 2.31 Å. The Bi(2)-O(15) bond length is 2.16 Å. The Bi(2)-O(8) bond length is 2.38 Å. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(5), one Pb(1), and one Bi(1) atom to form distorted OBa4BiPb octahedra that share corners with two equivalent O(6)Ba4TlPb octahedra, corners with two equivalent O(9)Ba4TlPb octahedra, corners with three equivalent O(3)Ba2BiPb tetrahedra, corners with four equivalent O(7)Ba2BiPb trigonal pyramids, and faces with two equivalent O(5)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 58-69°. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one Pb(1), and one Bi(1) atom. In the third O site, O(3) is bonded to one Ba(1), one Ba(3), one Pb(3), and one Bi(1) atom to form distorted OBa2BiPb tetrahedra that share  a cornercorner with one O(5)Ba4BiPb octahedra, corners with three equivalent O(1)Ba4BiPb octahedra,  a cornercorner with one O(7)Ba2BiPb trigonal pyramid, and  an edgeedge with one O(5)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 49-76°. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(4), one Ba(7), one Tl(1), and one Pb(2) atom. In the fifth O site, O(5) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(5), one Pb(1), and one Bi(1) atom to form OBa4BiPb octahedra that share corners with two equivalent O(9)Ba4TlPb octahedra,  a cornercorner with one O(3)Ba2BiPb tetrahedra,  an edgeedge with one O(6)Ba4TlPb octahedra,  an edgeedge with one O(3)Ba2BiPb tetrahedra, edges with two equivalent O(7)Ba2BiPb trigonal pyramids, and faces with two equivalent O(1)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 4-8°. In the sixth O site, O(6) is bonded to one Ba(2), one Ba(4), one Ba(5), one Ba(7), one Tl(1), and one Pb(2) atom to form distorted OBa4TlPb octahedra that share corners with two equivalent O(1)Ba4BiPb octahedra, corners with two equivalent O(9)Ba4TlPb octahedra, corners with two equivalent O(7)Ba2BiPb trigonal pyramids,  an edgeedge with one O(12)Ba4BiPb octahedra,  an edgeedge with one O(5)Ba4BiPb octahedra, and edges with two equivalent O(9)Ba4TlPb octahedra. The corner-sharing octahedral tilt angles range from 25-63°. In the seventh O site, O(7) is bonded to one Ba(2), one Ba(5), one Pb(1), and one Bi(1) atom to form distorted OBa2BiPb trigonal pyramids that share corners with two equivalent O(6)Ba4TlPb octahedra, corners with two equivalent O(9)Ba4TlPb octahedra, corners with four equivalent O(1)Ba4BiPb octahedra,  a cornercorner with one O(3)Ba2BiPb tetrahedra, and edges with two equivalent O(5)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles range from 13-74°. In the eighth O site, O(8) is bonded to one Ba(6), one Ba(8), one Pb(4), and one Bi(2) atom to form distorted OBa2BiPb trigonal pyramids that share corners with three equivalent O(15)Ba2TlBi tetrahedra and edges with two equivalent O(12)Ba4BiPb octahedra. In the ninth O site, O(9) is bonded to one Ba(2), one Ba(4), one Ba(5), one Ba(7), one Tl(1), and one Pb(2) atom to form distorted OBa4TlPb octahedra that share corners with two equivalent O(1)Ba4BiPb octahedra, corners with two equivalent O(12)Ba4BiPb octahedra, corners with two equivalent O(5)Ba4BiPb octahedra, corners with two equivalent O(6)Ba4TlPb octahedra, corners with two equivalent O(7)Ba2BiPb trigonal pyramids, and edges with two equivalent O(6)Ba4TlPb octahedra. The corner-sharing octahedral tilt angles range from 4-69°. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Ba(6), one Ba(7), one Ba(8), one Pb(4), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Ba(2), one Ba(4), one Ba(7), one Tl(1), and one Pb(2) atom. In the twelfth O site, O(12) is bonded to one Ba(4), one Ba(6), one Ba(7), one Ba(8), one Pb(4), and one Bi(2) atom to form distorted OBa4BiPb octahedra that share corners with two equivalent O(9)Ba4TlPb octahedra,  a cornercorner with one O(15)Ba2TlBi tetrahedra,  an edgeedge with one O(6)Ba4TlPb octahedra,  an edgeedge with one O(15)Ba2TlBi tetrahedra, and edges with two equivalent O(8)Ba2BiPb trigonal pyramids. The corner-sharing octahedral tilt angles range from 8-11°. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(3), one Ba(8), one Tl(2), and one Pb(3) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ba(4), one Ba(6), one Ba(8), one Pb(4), and one Bi(2) atom. In the fifteenth O site, O(15) is bonded to one Ba(6), one Ba(8), one Tl(2), and one Bi(2) atom to form distorted OBa2TlBi tetrahedra that share  a cornercorner with one O(12)Ba4BiPb octahedra, corners with three equivalent O(8)Ba2BiPb trigonal pyramids, and  an edgeedge with one O(12)Ba4BiPb octahedra. The corner-sharing octahedral tilt angles are 59°. In the sixteenth O site, O(16) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Ba(6), one Ba(8), one Tl(2), and one Pb(3) atom. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(3), one Ba(6), one Tl(2), and one Pb(3) atom.