Tb2CuTe2(SO7)2 crystallizes in the triclinic P-1 space group. Tb(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(6), one O(7), two equivalent O(4), and two equivalent O(5) atoms. Cu(1) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(7) atoms to form CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra. Te(1) is bonded in a distorted T-shaped geometry to one O(5), one O(6), and one O(7) atom. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share  a cornercorner with one Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Tb(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one S(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Tb(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Tb(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tb(1) and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Tb(1), one Cu(1), and one Te(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Tb(1), one Cu(1), and one Te(1) atom.
Tb2CuTe2(SO7)2 crystallizes in the triclinic P-1 space group. Tb(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(6), one O(7), two equivalent O(4), and two equivalent O(5) atoms. The Tb(1)-O(1) bond length is 2.44 Å. The Tb(1)-O(3) bond length is 2.33 Å. The Tb(1)-O(6) bond length is 2.30 Å. The Tb(1)-O(7) bond length is 2.54 Å. There is one shorter (2.46 Å) and one longer (2.56 Å) Tb(1)-O(4) bond length. There is one shorter (2.35 Å) and one longer (2.38 Å) Tb(1)-O(5) bond length. Cu(1) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(7) atoms to form CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra. Both Cu(1)-O(2) bond lengths are 2.34 Å. Both Cu(1)-O(6) bond lengths are 2.07 Å. Both Cu(1)-O(7) bond lengths are 1.95 Å. Te(1) is bonded in a distorted T-shaped geometry to one O(5), one O(6), and one O(7) atom. The Te(1)-O(5) bond length is 1.91 Å. The Te(1)-O(6) bond length is 1.91 Å. The Te(1)-O(7) bond length is 1.94 Å. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share  a cornercorner with one Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. The S(1)-O(1) bond length is 1.50 Å. The S(1)-O(2) bond length is 1.47 Å. The S(1)-O(3) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.51 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Tb(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one S(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Tb(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Tb(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tb(1) and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Tb(1), one Cu(1), and one Te(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Tb(1), one Cu(1), and one Te(1) atom.