CuH10SO9 crystallizes in the triclinic P-1 space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to two equivalent O(2), two equivalent O(7), and two equivalent O(8) atoms to form CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(4) and one O(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(3) and one O(7) atom. In the seventh H site, H(7) is bonded in a distorted linear geometry to one O(3) and one O(8) atom. In the eighth H site, H(8) is bonded in a distorted single-bond geometry to one O(4) and one O(8) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(1) and one O(9) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(9) 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 and  a cornercorner with one Cu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cu(1), one H(9), and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cu(2) and one S(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one H(6), one H(7), and one S(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one H(5), one H(8), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one H(1), and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one H(3), and one H(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Cu(2), one H(5), and one H(6) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cu(2), one H(7), and one H(8) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one H(10) and one H(9) atom.
CuH10SO9 crystallizes in the triclinic P-1 space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra. Both Cu(1)-O(1) bond lengths are 2.45 Å. Both Cu(1)-O(5) bond lengths are 1.98 Å. Both Cu(1)-O(6) bond lengths are 2.00 Å. In the second Cu site, Cu(2) is bonded to two equivalent O(2), two equivalent O(7), and two equivalent O(8) atoms to form CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra. Both Cu(2)-O(2) bond lengths are 2.51 Å. Both Cu(2)-O(7) bond lengths are 1.97 Å. Both Cu(2)-O(8) bond lengths are 1.93 Å. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(5) atom. The H(1)-O(5) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. The H(2)-O(5) bond length is 1.00 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(6) atom. The H(3)-O(6) bond length is 0.99 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(6) atom. The H(4)-O(6) bond length is 1.00 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(4) and one O(7) atom. The H(5)-O(4) bond length is 1.75 Å. The H(5)-O(7) bond length is 0.99 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(3) and one O(7) atom. The H(6)-O(3) bond length is 1.70 Å. The H(6)-O(7) bond length is 1.00 Å. In the seventh H site, H(7) is bonded in a distorted linear geometry to one O(3) and one O(8) atom. The H(7)-O(3) bond length is 1.64 Å. The H(7)-O(8) bond length is 1.00 Å. In the eighth H site, H(8) is bonded in a distorted single-bond geometry to one O(4) and one O(8) atom. The H(8)-O(4) bond length is 1.69 Å. The H(8)-O(8) bond length is 1.00 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(1) and one O(9) atom. The H(9)-O(1) bond length is 1.70 Å. The H(9)-O(9) bond length is 1.00 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(9) atom. The H(10)-O(9) bond length is 0.99 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 and  a cornercorner with one Cu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. The S(1)-O(1) bond length is 1.49 Å. The S(1)-O(2) bond length is 1.49 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 nine inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cu(1), one H(9), and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cu(2) and one S(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one H(6), one H(7), and one S(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one H(5), one H(8), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one H(1), and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one H(3), and one H(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Cu(2), one H(5), and one H(6) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cu(2), one H(7), and one H(8) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one H(10) and one H(9) atom.