Co3Tl3O8 crystallizes in the triclinic P1 space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(12), one O(5), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Co(6)O6 octahedra, corners with two equivalent Tl(3)O6 octahedra, corners with two equivalent Tl(5)O6 octahedra, corners with two equivalent Tl(6)O6 octahedra, and corners with two equivalent Co(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-81°. In the second Co site, Co(2) is bonded to one O(1), one O(13), one O(15), one O(3), one O(7), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Tl(3)O6 octahedra, corners with four equivalent Co(6)O6 octahedra,  a cornercorner with one Co(4)O4 tetrahedra, edges with two equivalent Tl(6)O6 octahedra, and  a faceface with one Tl(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-65°. In the third Co site, Co(3) is bonded to one O(11), one O(14), one O(16), one O(2), one O(4), and one O(7) atom to form CoO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Tl(5)O6 octahedra, corners with four equivalent Co(5)O6 octahedra,  a cornercorner with one Co(4)O4 tetrahedra, and  a faceface with one Tl(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-69°. In the fourth Co site, Co(4) is bonded to one O(11), one O(5), one O(6), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Tl(3)O6 octahedra, corners with two equivalent Tl(5)O6 octahedra, corners with two equivalent Tl(6)O6 octahedra, and corners with two equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-81°. In the fifth Co site, Co(5) is bonded to one O(10), one O(14), one O(16), one O(2), one O(4), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Co(6)O6 octahedra, corners with four equivalent Co(3)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra, and edges with two equivalent Tl(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-41°. In the sixth Co site, Co(6) is bonded to one O(1), one O(12), one O(13), one O(15), one O(3), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Tl(6)O6 octahedra, corners with four equivalent Co(2)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra, edges with two equivalent Tl(3)O6 octahedra, and  a faceface with one Tl(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-68°. There are six inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(15), one O(16), one O(7), and one O(8) atom. In the second Tl site, Tl(2) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(15), one O(16), one O(7), and one O(8) atom. In the third Tl site, Tl(3) is bonded to one O(1), one O(12), one O(13), one O(3), one O(5), and one O(9) atom to form distorted TlO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Tl(5)O6 octahedra, corners with four equivalent Tl(6)O6 octahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, edges with two equivalent Co(6)O6 octahedra, and  a faceface with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. In the fourth Tl site, Tl(4) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(14), one O(2), one O(4), and one O(6) atom. In the fifth Tl site, Tl(5) is bonded to one O(10), one O(11), one O(16), one O(2), one O(4), and one O(5) atom to form distorted TlO6 octahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Tl(3)O6 octahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, edges with two equivalent Co(5)O6 octahedra, and  a faceface with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-69°. In the sixth Tl site, Tl(6) is bonded to one O(1), one O(12), one O(15), one O(3), one O(6), and one O(9) atom to form distorted TlO6 octahedra that share  a cornercorner with one Co(6)O6 octahedra, corners with four equivalent Tl(3)O6 octahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, edges with two equivalent Co(2)O6 octahedra, and  a faceface with one Co(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-68°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Co(2), one Co(6), one Tl(3), and one Tl(6) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), one Tl(4), and one Tl(5) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Co(2), one Co(6), one Tl(3), and one Tl(6) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), one Tl(4), and one Tl(5) atom. In the fifth O site, O(5) is bonded to one Co(1), one Co(4), one Tl(3), and one Tl(5) atom to form corner-sharing OTl2Co2 tetrahedra. In the sixth O site, O(6) is bonded to one Co(1), one Co(4), one Tl(4), and one Tl(6) atom to form distorted OTl2Co2 tetrahedra that share corners with two equivalent O(10)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra,  a cornercorner with one O(14)Tl3Co2 trigonal bipyramid,  a cornercorner with one O(15)Tl3Co2 trigonal bipyramid, corners with two equivalent O(11)Tl2Co2 trigonal pyramids, corners with two equivalent O(12)Tl2Co2 trigonal pyramids, and corners with two equivalent O(9)Tl2Co2 trigonal pyramids. In the seventh O site, O(7) is bonded to one Co(2), one Co(3), one Tl(1), and one Tl(2) atom to form distorted OTl2Co2 trigonal pyramids that share corners with two equivalent O(8)Tl2Co2 tetrahedra,  a cornercorner with one O(14)Tl3Co2 trigonal bipyramid,  a cornercorner with one O(15)Tl3Co2 trigonal bipyramid,  a cornercorner with one O(11)Tl2Co2 trigonal pyramid,  a cornercorner with one O(9)Tl2Co2 trigonal pyramid,  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid, and  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid. In the eighth O site, O(8) is bonded to one Co(5), one Co(6), one Tl(1), and one Tl(2) atom to form distorted OTl2Co2 tetrahedra that share  a cornercorner with one O(10)Tl2Co2 tetrahedra, corners with three equivalent O(14)Tl3Co2 trigonal bipyramids, corners with three equivalent O(15)Tl3Co2 trigonal bipyramids,  a cornercorner with one O(12)Tl2Co2 trigonal pyramid, and corners with two equivalent O(7)Tl2Co2 trigonal pyramids. In the ninth O site, O(9) is bonded to one Co(2), one Co(4), one Tl(3), and one Tl(6) atom to form distorted OTl2Co2 trigonal pyramids that share corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra,  a cornercorner with one O(11)Tl2Co2 trigonal pyramid,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid, corners with two equivalent O(12)Tl2Co2 trigonal pyramids, and  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid. In the tenth O site, O(10) is bonded to one Co(1), one Co(5), one Tl(4), and one Tl(5) atom to form distorted OTl2Co2 tetrahedra that share  a cornercorner with one O(8)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra,  a cornercorner with one O(12)Tl2Co2 trigonal pyramid, corners with two equivalent O(11)Tl2Co2 trigonal pyramids, and  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid. In the eleventh O site, O(11) is bonded to one Co(3), one Co(4), one Tl(4), and one Tl(5) atom to form distorted OTl2Co2 trigonal pyramids that share corners with two equivalent O(10)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid,  a cornercorner with one O(9)Tl2Co2 trigonal pyramid, and  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid. In the twelfth O site, O(12) is bonded to one Co(1), one Co(6), one Tl(3), and one Tl(6) atom to form distorted OTl2Co2 trigonal pyramids that share  a cornercorner with one O(10)Tl2Co2 tetrahedra,  a cornercorner with one O(8)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra, corners with two equivalent O(9)Tl2Co2 trigonal pyramids, and  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Co(2), one Co(6), one Tl(1), one Tl(2), and one Tl(3) atom. In the fourteenth O site, O(14) is bonded to one Co(3), one Co(5), one Tl(1), one Tl(2), and one Tl(4) atom to form distorted OTl3Co2 trigonal bipyramids that share  a cornercorner with one O(6)Tl2Co2 tetrahedra, corners with three equivalent O(8)Tl2Co2 tetrahedra,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid,  an edgeedge with one O(10)Tl2Co2 tetrahedra,  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid,  an edgeedge with one O(11)Tl2Co2 trigonal pyramid, and  an edgeedge with one O(7)Tl2Co2 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Co(2), one Co(6), one Tl(1), one Tl(2), and one Tl(6) atom to form distorted OTl3Co2 trigonal bipyramids that share  a cornercorner with one O(6)Tl2Co2 tetrahedra, corners with three equivalent O(8)Tl2Co2 tetrahedra,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid,  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid,  an edgeedge with one O(12)Tl2Co2 trigonal pyramid,  an edgeedge with one O(7)Tl2Co2 trigonal pyramid, and  an edgeedge with one O(9)Tl2Co2 trigonal pyramid. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Co(3), one Co(5), one Tl(1), one Tl(2), and one Tl(5) atom.
Co3Tl3O8 crystallizes in the triclinic P1 space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(12), one O(5), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Co(6)O6 octahedra, corners with two equivalent Tl(3)O6 octahedra, corners with two equivalent Tl(5)O6 octahedra, corners with two equivalent Tl(6)O6 octahedra, and corners with two equivalent Co(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-81°. The Co(1)-O(10) bond length is 1.98 Å. The Co(1)-O(12) bond length is 1.97 Å. The Co(1)-O(5) bond length is 2.01 Å. The Co(1)-O(6) bond length is 2.01 Å. In the second Co site, Co(2) is bonded to one O(1), one O(13), one O(15), one O(3), one O(7), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Tl(3)O6 octahedra, corners with four equivalent Co(6)O6 octahedra,  a cornercorner with one Co(4)O4 tetrahedra, edges with two equivalent Tl(6)O6 octahedra, and  a faceface with one Tl(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-65°. The Co(2)-O(1) bond length is 1.96 Å. The Co(2)-O(13) bond length is 2.01 Å. The Co(2)-O(15) bond length is 2.09 Å. The Co(2)-O(3) bond length is 2.07 Å. The Co(2)-O(7) bond length is 2.01 Å. The Co(2)-O(9) bond length is 2.15 Å. In the third Co site, Co(3) is bonded to one O(11), one O(14), one O(16), one O(2), one O(4), and one O(7) atom to form CoO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Tl(5)O6 octahedra, corners with four equivalent Co(5)O6 octahedra,  a cornercorner with one Co(4)O4 tetrahedra, and  a faceface with one Tl(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-69°. The Co(3)-O(11) bond length is 2.20 Å. The Co(3)-O(14) bond length is 2.16 Å. The Co(3)-O(16) bond length is 2.10 Å. The Co(3)-O(2) bond length is 2.11 Å. The Co(3)-O(4) bond length is 2.06 Å. The Co(3)-O(7) bond length is 2.10 Å. In the fourth Co site, Co(4) is bonded to one O(11), one O(5), one O(6), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Tl(3)O6 octahedra, corners with two equivalent Tl(5)O6 octahedra, corners with two equivalent Tl(6)O6 octahedra, and corners with two equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-81°. The Co(4)-O(11) bond length is 1.95 Å. The Co(4)-O(5) bond length is 2.01 Å. The Co(4)-O(6) bond length is 2.01 Å. The Co(4)-O(9) bond length is 1.97 Å. In the fifth Co site, Co(5) is bonded to one O(10), one O(14), one O(16), one O(2), one O(4), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Co(6)O6 octahedra, corners with four equivalent Co(3)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra, and edges with two equivalent Tl(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-41°. The Co(5)-O(10) bond length is 2.17 Å. The Co(5)-O(14) bond length is 2.09 Å. The Co(5)-O(16) bond length is 2.07 Å. The Co(5)-O(2) bond length is 2.02 Å. The Co(5)-O(4) bond length is 2.01 Å. The Co(5)-O(8) bond length is 1.95 Å. In the sixth Co site, Co(6) is bonded to one O(1), one O(12), one O(13), one O(15), one O(3), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Tl(6)O6 octahedra, corners with four equivalent Co(2)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra, edges with two equivalent Tl(3)O6 octahedra, and  a faceface with one Tl(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-68°. The Co(6)-O(1) bond length is 2.12 Å. The Co(6)-O(12) bond length is 2.20 Å. The Co(6)-O(13) bond length is 2.17 Å. The Co(6)-O(15) bond length is 2.09 Å. The Co(6)-O(3) bond length is 2.05 Å. The Co(6)-O(8) bond length is 2.12 Å. There are six inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(15), one O(16), one O(7), and one O(8) atom. The Tl(1)-O(13) bond length is 2.29 Å. The Tl(1)-O(14) bond length is 2.57 Å. The Tl(1)-O(15) bond length is 2.59 Å. The Tl(1)-O(16) bond length is 2.26 Å. The Tl(1)-O(7) bond length is 2.29 Å. The Tl(1)-O(8) bond length is 2.34 Å. In the second Tl site, Tl(2) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(15), one O(16), one O(7), and one O(8) atom. The Tl(2)-O(13) bond length is 2.66 Å. The Tl(2)-O(14) bond length is 2.24 Å. The Tl(2)-O(15) bond length is 2.27 Å. The Tl(2)-O(16) bond length is 2.66 Å. The Tl(2)-O(7) bond length is 2.29 Å. The Tl(2)-O(8) bond length is 2.30 Å. In the third Tl site, Tl(3) is bonded to one O(1), one O(12), one O(13), one O(3), one O(5), and one O(9) atom to form distorted TlO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Tl(5)O6 octahedra, corners with four equivalent Tl(6)O6 octahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, edges with two equivalent Co(6)O6 octahedra, and  a faceface with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. The Tl(3)-O(1) bond length is 2.21 Å. The Tl(3)-O(12) bond length is 2.25 Å. The Tl(3)-O(13) bond length is 2.48 Å. The Tl(3)-O(3) bond length is 2.48 Å. The Tl(3)-O(5) bond length is 2.30 Å. The Tl(3)-O(9) bond length is 2.29 Å. In the fourth Tl site, Tl(4) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(14), one O(2), one O(4), and one O(6) atom. The Tl(4)-O(10) bond length is 2.29 Å. The Tl(4)-O(11) bond length is 2.24 Å. The Tl(4)-O(14) bond length is 2.47 Å. The Tl(4)-O(2) bond length is 2.19 Å. The Tl(4)-O(4) bond length is 2.51 Å. The Tl(4)-O(6) bond length is 2.32 Å. In the fifth Tl site, Tl(5) is bonded to one O(10), one O(11), one O(16), one O(2), one O(4), and one O(5) atom to form distorted TlO6 octahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Tl(3)O6 octahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, edges with two equivalent Co(5)O6 octahedra, and  a faceface with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-69°. The Tl(5)-O(10) bond length is 2.25 Å. The Tl(5)-O(11) bond length is 2.29 Å. The Tl(5)-O(16) bond length is 2.47 Å. The Tl(5)-O(2) bond length is 2.44 Å. The Tl(5)-O(4) bond length is 2.21 Å. The Tl(5)-O(5) bond length is 2.31 Å. In the sixth Tl site, Tl(6) is bonded to one O(1), one O(12), one O(15), one O(3), one O(6), and one O(9) atom to form distorted TlO6 octahedra that share  a cornercorner with one Co(6)O6 octahedra, corners with four equivalent Tl(3)O6 octahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, edges with two equivalent Co(2)O6 octahedra, and  a faceface with one Co(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-68°. The Tl(6)-O(1) bond length is 2.50 Å. The Tl(6)-O(12) bond length is 2.28 Å. The Tl(6)-O(15) bond length is 2.47 Å. The Tl(6)-O(3) bond length is 2.21 Å. The Tl(6)-O(6) bond length is 2.29 Å. The Tl(6)-O(9) bond length is 2.25 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Co(2), one Co(6), one Tl(3), and one Tl(6) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), one Tl(4), and one Tl(5) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Co(2), one Co(6), one Tl(3), and one Tl(6) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), one Tl(4), and one Tl(5) atom. In the fifth O site, O(5) is bonded to one Co(1), one Co(4), one Tl(3), and one Tl(5) atom to form corner-sharing OTl2Co2 tetrahedra. In the sixth O site, O(6) is bonded to one Co(1), one Co(4), one Tl(4), and one Tl(6) atom to form distorted OTl2Co2 tetrahedra that share corners with two equivalent O(10)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra,  a cornercorner with one O(14)Tl3Co2 trigonal bipyramid,  a cornercorner with one O(15)Tl3Co2 trigonal bipyramid, corners with two equivalent O(11)Tl2Co2 trigonal pyramids, corners with two equivalent O(12)Tl2Co2 trigonal pyramids, and corners with two equivalent O(9)Tl2Co2 trigonal pyramids. In the seventh O site, O(7) is bonded to one Co(2), one Co(3), one Tl(1), and one Tl(2) atom to form distorted OTl2Co2 trigonal pyramids that share corners with two equivalent O(8)Tl2Co2 tetrahedra,  a cornercorner with one O(14)Tl3Co2 trigonal bipyramid,  a cornercorner with one O(15)Tl3Co2 trigonal bipyramid,  a cornercorner with one O(11)Tl2Co2 trigonal pyramid,  a cornercorner with one O(9)Tl2Co2 trigonal pyramid,  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid, and  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid. In the eighth O site, O(8) is bonded to one Co(5), one Co(6), one Tl(1), and one Tl(2) atom to form distorted OTl2Co2 tetrahedra that share  a cornercorner with one O(10)Tl2Co2 tetrahedra, corners with three equivalent O(14)Tl3Co2 trigonal bipyramids, corners with three equivalent O(15)Tl3Co2 trigonal bipyramids,  a cornercorner with one O(12)Tl2Co2 trigonal pyramid, and corners with two equivalent O(7)Tl2Co2 trigonal pyramids. In the ninth O site, O(9) is bonded to one Co(2), one Co(4), one Tl(3), and one Tl(6) atom to form distorted OTl2Co2 trigonal pyramids that share corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra,  a cornercorner with one O(11)Tl2Co2 trigonal pyramid,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid, corners with two equivalent O(12)Tl2Co2 trigonal pyramids, and  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid. In the tenth O site, O(10) is bonded to one Co(1), one Co(5), one Tl(4), and one Tl(5) atom to form distorted OTl2Co2 tetrahedra that share  a cornercorner with one O(8)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra,  a cornercorner with one O(12)Tl2Co2 trigonal pyramid, corners with two equivalent O(11)Tl2Co2 trigonal pyramids, and  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid. In the eleventh O site, O(11) is bonded to one Co(3), one Co(4), one Tl(4), and one Tl(5) atom to form distorted OTl2Co2 trigonal pyramids that share corners with two equivalent O(10)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid,  a cornercorner with one O(9)Tl2Co2 trigonal pyramid, and  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid. In the twelfth O site, O(12) is bonded to one Co(1), one Co(6), one Tl(3), and one Tl(6) atom to form distorted OTl2Co2 trigonal pyramids that share  a cornercorner with one O(10)Tl2Co2 tetrahedra,  a cornercorner with one O(8)Tl2Co2 tetrahedra, corners with two equivalent O(5)Tl2Co2 tetrahedra, corners with two equivalent O(6)Tl2Co2 tetrahedra, corners with two equivalent O(9)Tl2Co2 trigonal pyramids, and  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Co(2), one Co(6), one Tl(1), one Tl(2), and one Tl(3) atom. In the fourteenth O site, O(14) is bonded to one Co(3), one Co(5), one Tl(1), one Tl(2), and one Tl(4) atom to form distorted OTl3Co2 trigonal bipyramids that share  a cornercorner with one O(6)Tl2Co2 tetrahedra, corners with three equivalent O(8)Tl2Co2 tetrahedra,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid,  an edgeedge with one O(10)Tl2Co2 tetrahedra,  an edgeedge with one O(15)Tl3Co2 trigonal bipyramid,  an edgeedge with one O(11)Tl2Co2 trigonal pyramid, and  an edgeedge with one O(7)Tl2Co2 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Co(2), one Co(6), one Tl(1), one Tl(2), and one Tl(6) atom to form distorted OTl3Co2 trigonal bipyramids that share  a cornercorner with one O(6)Tl2Co2 tetrahedra, corners with three equivalent O(8)Tl2Co2 tetrahedra,  a cornercorner with one O(7)Tl2Co2 trigonal pyramid,  an edgeedge with one O(14)Tl3Co2 trigonal bipyramid,  an edgeedge with one O(12)Tl2Co2 trigonal pyramid,  an edgeedge with one O(7)Tl2Co2 trigonal pyramid, and  an edgeedge with one O(9)Tl2Co2 trigonal pyramid. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Co(3), one Co(5), one Tl(1), one Tl(2), and one Tl(5) atom.