Cu7Te2(SO10)2 crystallizes in the triclinic P-1 space group. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted CuO5 square pyramids that share corners with two equivalent S(1)O4 tetrahedra and  an edgeedge with one Cu(5)O6 octahedra. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(7) atom. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(5) atoms. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. In the fifth Cu site, Cu(5) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra and edges with two equivalent Cu(1)O5 square pyramids. Te(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(6) atom. S(1) is bonded to one O(10), one O(3), one O(8), and one O(9) atom to form SO4 tetrahedra that share  a cornercorner with one Cu(5)O6 octahedra and corners with two equivalent Cu(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 44°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(4), and one Te(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(3), and one Te(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(5), and one S(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Cu(2) and one Cu(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cu(3) and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(5), and one Te(1) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one Cu(5) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Cu(1) and one S(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one S(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cu(1) and one S(1) atom.
Cu7Te2(SO10)2 crystallizes in the triclinic P-1 space group. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted CuO5 square pyramids that share corners with two equivalent S(1)O4 tetrahedra and  an edgeedge with one Cu(5)O6 octahedra. The Cu(1)-O(10) bond length is 2.38 Å. The Cu(1)-O(2) bond length is 1.90 Å. The Cu(1)-O(6) bond length is 1.95 Å. The Cu(1)-O(7) bond length is 1.90 Å. The Cu(1)-O(8) bond length is 1.95 Å. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(7) atom. The Cu(2)-O(1) bond length is 1.90 Å. The Cu(2)-O(3) bond length is 1.89 Å. The Cu(2)-O(4) bond length is 1.81 Å. The Cu(2)-O(7) bond length is 1.86 Å. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(5) atoms. Both Cu(3)-O(2) bond lengths are 1.88 Å. Both Cu(3)-O(5) bond lengths are 1.86 Å. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. Both Cu(4)-O(1) bond lengths are 1.95 Å. Both Cu(4)-O(4) bond lengths are 1.80 Å. In the fifth Cu site, Cu(5) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra and edges with two equivalent Cu(1)O5 square pyramids. Both Cu(5)-O(3) bond lengths are 2.43 Å. Both Cu(5)-O(6) bond lengths are 1.89 Å. Both Cu(5)-O(7) bond lengths are 1.89 Å. Te(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(6) atom. The Te(1)-O(1) bond length is 1.99 Å. The Te(1)-O(2) bond length is 2.22 Å. The Te(1)-O(5) bond length is 1.91 Å. The Te(1)-O(6) bond length is 2.03 Å. S(1) is bonded to one O(10), one O(3), one O(8), and one O(9) atom to form SO4 tetrahedra that share  a cornercorner with one Cu(5)O6 octahedra and corners with two equivalent Cu(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 44°. The S(1)-O(10) bond length is 1.46 Å. The S(1)-O(3) bond length is 1.53 Å. The S(1)-O(8) bond length is 1.51 Å. The S(1)-O(9) bond length is 1.47 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(4), and one Te(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(3), and one Te(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(5), and one S(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Cu(2) and one Cu(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cu(3) and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(5), and one Te(1) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one Cu(5) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Cu(1) and one S(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one S(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cu(1) and one S(1) atom.