K2CoH2(SO5)2 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent S(1)O4 tetrahedra. H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(5) atom. S(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-50°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one K(1), one Co(1), and one H(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Co(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one Co(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one H(1), and one S(1) atom.
K2CoH2(SO5)2 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. The K(1)-O(1) bond length is 2.74 Å. The K(1)-O(4) bond length is 2.96 Å. There is one shorter (2.90 Å) and one longer (3.00 Å) K(1)-O(2) bond length. There is one shorter (2.82 Å) and one longer (3.02 Å) K(1)-O(3) bond length. There is one shorter (2.78 Å) and one longer (2.99 Å) K(1)-O(5) bond length. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent S(1)O4 tetrahedra. Both Co(1)-O(1) bond lengths are 1.78 Å. Both Co(1)-O(2) bond lengths are 1.97 Å. Both Co(1)-O(4) bond lengths are 2.17 Å. H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(5) atom. The H(1)-O(1) bond length is 1.00 Å. The H(1)-O(5) bond length is 1.68 Å. S(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-50°. The S(1)-O(2) bond length is 1.55 Å. The S(1)-O(3) bond length is 1.47 Å. The S(1)-O(4) bond length is 1.49 Å. The S(1)-O(5) bond length is 1.48 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one K(1), one Co(1), and one H(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Co(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one Co(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one H(1), and one S(1) atom.