Zn7H10(SO9)2 crystallizes in the triclinic P-1 space group. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1), two equivalent O(7), and two equivalent O(8) atoms to form ZnO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, edges with two equivalent Zn(3)O6 octahedra, and edges with four equivalent Zn(2)O6 octahedra. In the second Zn site, Zn(2) is bonded to one O(5), one O(7), one O(8), one O(9), and two equivalent O(1) atoms to form distorted ZnO6 octahedra that share corners with two equivalent Zn(4)O4 tetrahedra, corners with two equivalent S(1)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra, edges with two equivalent Zn(1)O6 octahedra, and edges with two equivalent Zn(3)O6 octahedra. In the third Zn site, Zn(3) is bonded to one O(5), one O(7), one O(8), one O(9), and two equivalent O(6) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(4)O4 tetrahedra,  an edgeedge with one Zn(1)O6 octahedra,  an edgeedge with one Zn(3)O6 octahedra, and edges with two equivalent Zn(2)O6 octahedra. In the fourth Zn site, Zn(4) is bonded to one O(4), one O(5), one O(6), and one O(9) atom to form ZnO4 tetrahedra that share corners with two equivalent Zn(2)O6 octahedra, corners with four equivalent Zn(3)O6 octahedra, and  a cornercorner with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. There are five 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(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(8) atom. In the fifth H site, H(5) 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 Zn(1)O6 octahedra, corners with two equivalent Zn(2)O6 octahedra, and  a cornercorner with one Zn(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-58°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Zn(1), two equivalent Zn(2), and one S(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one S(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(4) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Zn(2), one Zn(3), one Zn(4), and one H(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Zn(4), two equivalent Zn(3), and one H(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Zn(1), one Zn(2), one Zn(3), and one H(3) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Zn(1), one Zn(2), one Zn(3), and one H(4) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Zn(2), one Zn(3), one Zn(4), and one H(5) atom.
Zn7H10(SO9)2 crystallizes in the triclinic P-1 space group. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1), two equivalent O(7), and two equivalent O(8) atoms to form ZnO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra, edges with two equivalent Zn(3)O6 octahedra, and edges with four equivalent Zn(2)O6 octahedra. Both Zn(1)-O(1) bond lengths are 2.30 Å. Both Zn(1)-O(7) bond lengths are 2.11 Å. Both Zn(1)-O(8) bond lengths are 2.05 Å. In the second Zn site, Zn(2) is bonded to one O(5), one O(7), one O(8), one O(9), and two equivalent O(1) atoms to form distorted ZnO6 octahedra that share corners with two equivalent Zn(4)O4 tetrahedra, corners with two equivalent S(1)O4 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra, edges with two equivalent Zn(1)O6 octahedra, and edges with two equivalent Zn(3)O6 octahedra. The Zn(2)-O(5) bond length is 2.13 Å. The Zn(2)-O(7) bond length is 2.02 Å. The Zn(2)-O(8) bond length is 2.02 Å. The Zn(2)-O(9) bond length is 2.11 Å. There is one shorter (2.30 Å) and one longer (2.45 Å) Zn(2)-O(1) bond length. In the third Zn site, Zn(3) is bonded to one O(5), one O(7), one O(8), one O(9), and two equivalent O(6) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(4)O4 tetrahedra,  an edgeedge with one Zn(1)O6 octahedra,  an edgeedge with one Zn(3)O6 octahedra, and edges with two equivalent Zn(2)O6 octahedra. The Zn(3)-O(5) bond length is 2.21 Å. The Zn(3)-O(7) bond length is 2.11 Å. The Zn(3)-O(8) bond length is 2.13 Å. The Zn(3)-O(9) bond length is 2.15 Å. There is one shorter (2.11 Å) and one longer (2.17 Å) Zn(3)-O(6) bond length. In the fourth Zn site, Zn(4) is bonded to one O(4), one O(5), one O(6), and one O(9) atom to form ZnO4 tetrahedra that share corners with two equivalent Zn(2)O6 octahedra, corners with four equivalent Zn(3)O6 octahedra, and  a cornercorner with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. The Zn(4)-O(4) bond length is 2.02 Å. The Zn(4)-O(5) bond length is 1.97 Å. The Zn(4)-O(6) bond length is 2.02 Å. The Zn(4)-O(9) bond length is 1.97 Å. There are five 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(6) atom. The H(2)-O(6) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(7) atom. The H(3)-O(7) bond length is 0.98 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(8) atom. The H(4)-O(8) bond length is 0.98 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(9) atom. The H(5)-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 Zn(1)O6 octahedra, corners with two equivalent Zn(2)O6 octahedra, and  a cornercorner with one Zn(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-58°. The S(1)-O(1) bond length is 1.53 Å. The S(1)-O(2) bond length is 1.47 Å. The S(1)-O(3) bond length is 1.48 Å. The S(1)-O(4) bond length is 1.52 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Zn(1), two equivalent Zn(2), and one S(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one S(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(4) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Zn(2), one Zn(3), one Zn(4), and one H(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Zn(4), two equivalent Zn(3), and one H(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Zn(1), one Zn(2), one Zn(3), and one H(3) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Zn(1), one Zn(2), one Zn(3), and one H(4) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Zn(2), one Zn(3), one Zn(4), and one H(5) atom.