Tl4CuTeO6 crystallizes in the triclinic P-1 space group. Cu(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(6), and two equivalent O(5) atoms. There are four inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 3-coordinate geometry to one O(6) and two equivalent O(1) atoms. In the second Tl site, Tl(2) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(5) atom. In the third Tl site, Tl(3) is bonded in a 2-coordinate geometry to two equivalent O(2) atoms. In the fourth Tl site, Tl(4) is bonded in a 2-coordinate geometry to one O(1) and one O(6) atom. Te(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Tl(4), two equivalent Tl(1), and one Te(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to two equivalent Tl(3) and one Te(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Cu(1), one Tl(2), and one Te(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cu(1), one Tl(2), and one Te(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Cu(1), one Tl(2), and one Te(1) atom. In the sixth O site, O(6) is bonded in a tetrahedral geometry to one Cu(1), one Tl(1), one Tl(4), and one Te(1) atom.
Tl4CuTeO6 crystallizes in the triclinic P-1 space group. Cu(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(6), and two equivalent O(5) atoms. The Cu(1)-O(3) bond length is 1.96 Å. The Cu(1)-O(4) bond length is 2.03 Å. The Cu(1)-O(6) bond length is 1.98 Å. There is one shorter (2.02 Å) and one longer (2.57 Å) Cu(1)-O(5) bond length. There are four inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 3-coordinate geometry to one O(6) and two equivalent O(1) atoms. The Tl(1)-O(6) bond length is 2.45 Å. There is one shorter (2.63 Å) and one longer (2.71 Å) Tl(1)-O(1) bond length. In the second Tl site, Tl(2) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(5) atom. The Tl(2)-O(3) bond length is 2.47 Å. The Tl(2)-O(4) bond length is 2.62 Å. The Tl(2)-O(5) bond length is 2.55 Å. In the third Tl site, Tl(3) is bonded in a 2-coordinate geometry to two equivalent O(2) atoms. There is one shorter (2.46 Å) and one longer (2.54 Å) Tl(3)-O(2) bond length. In the fourth Tl site, Tl(4) is bonded in a 2-coordinate geometry to one O(1) and one O(6) atom. The Tl(4)-O(1) bond length is 2.61 Å. The Tl(4)-O(6) bond length is 2.50 Å. Te(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Te(1)-O(1) bond length is 1.93 Å. The Te(1)-O(2) bond length is 1.94 Å. The Te(1)-O(3) bond length is 1.98 Å. The Te(1)-O(4) bond length is 2.00 Å. The Te(1)-O(5) bond length is 1.99 Å. The Te(1)-O(6) bond length is 2.02 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Tl(4), two equivalent Tl(1), and one Te(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to two equivalent Tl(3) and one Te(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Cu(1), one Tl(2), and one Te(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cu(1), one Tl(2), and one Te(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Cu(1), one Tl(2), and one Te(1) atom. In the sixth O site, O(6) is bonded in a tetrahedral geometry to one Cu(1), one Tl(1), one Tl(4), and one Te(1) atom.