UTl2(TeO4)2 crystallizes in the monoclinic P2_1/c space group. U(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 2-coordinate geometry to one O(1) and one O(4) atom. In the second Tl site, Tl(2) is bonded in a distorted single-bond geometry to one O(8) atom. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted see-saw-like geometry to one O(2), one O(3), one O(6), and one O(8) atom. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(5), one O(7), and two equivalent O(4) atoms. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Tl(2) and one Te(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one U(1) and one Tl(1) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one U(1) and one Te(1) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one U(1) and one Te(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one Tl(1) and two equivalent Te(2) atoms. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one U(1) and one Te(2) atom. In the seventh O site, O(6) is bonded in a distorted single-bond geometry to one U(1) and one Te(1) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one U(1) and one Te(2) atom.
UTl2(TeO4)2 crystallizes in the monoclinic P2_1/c space group. U(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. The U(1)-O(1) bond length is 1.87 Å. The U(1)-O(2) bond length is 2.21 Å. The U(1)-O(3) bond length is 2.17 Å. The U(1)-O(5) bond length is 2.23 Å. The U(1)-O(6) bond length is 1.87 Å. The U(1)-O(7) bond length is 2.24 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 2-coordinate geometry to one O(1) and one O(4) atom. The Tl(1)-O(1) bond length is 2.60 Å. The Tl(1)-O(4) bond length is 2.74 Å. In the second Tl site, Tl(2) is bonded in a distorted single-bond geometry to one O(8) atom. The Tl(2)-O(8) bond length is 2.42 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted see-saw-like geometry to one O(2), one O(3), one O(6), and one O(8) atom. The Te(1)-O(2) bond length is 1.90 Å. The Te(1)-O(3) bond length is 1.93 Å. The Te(1)-O(6) bond length is 2.56 Å. The Te(1)-O(8) bond length is 1.85 Å. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(5), one O(7), and two equivalent O(4) atoms. The Te(2)-O(5) bond length is 1.88 Å. The Te(2)-O(7) bond length is 1.91 Å. There is one shorter (1.86 Å) and one longer (2.57 Å) Te(2)-O(4) bond length. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Tl(2) and one Te(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one U(1) and one Tl(1) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one U(1) and one Te(1) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one U(1) and one Te(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one Tl(1) and two equivalent Te(2) atoms. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one U(1) and one Te(2) atom. In the seventh O site, O(6) is bonded in a distorted single-bond geometry to one U(1) and one Te(1) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one U(1) and one Te(2) atom.