(K2P2HO6)2H2 crystallizes in the triclinic P-1 space group. The structure consists of two 1333-74-0 molecules inside a K2P2HO6 framework. In the K2P2HO6 framework, there are four inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one H(3), one O(10), one O(2), one O(3), one O(4), and two equivalent O(11) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(2), one O(5), one O(8), and two equivalent O(1) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one H(3), one H(4), one O(10), one O(11), one O(12), one O(3), one O(4), and one O(8) atom. In the fourth K site, K(4) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and one O(7) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(2), one O(4), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(11), one O(12), one O(6), and one O(9) atom to form corner-sharing PO4 tetrahedra. In the third P site, P(3) is bonded to one O(1), one O(10), one O(3), and one O(9) atom to form corner-sharing PO4 tetrahedra. In the fourth P site, P(4) is bonded to one O(12), one O(5), one O(7), and one O(8) atom to form corner-sharing PO4 tetrahedra. There are two inequivalent H sites. In the first H site, H(3) is bonded in a 3-coordinate geometry to one K(1), one K(3), and one H(4) atom. In the second H site, H(4) is bonded in a distorted single-bond geometry to one K(3) and one H(3) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(4), two equivalent K(2), and one P(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(4), and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one K(3), and one P(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(3), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), one K(4), and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(4) and one P(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one K(4), one P(1), and one P(4) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(2), one K(3), and one P(4) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one K(1), one K(3), one P(1), and one P(3) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(3), two equivalent K(1), and one P(2) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one K(3), one P(2), and one P(4) atom.
(K2P2HO6)2H2 crystallizes in the triclinic P-1 space group. The structure consists of two 1333-74-0 molecules inside a K2P2HO6 framework. In the K2P2HO6 framework, there are four inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one H(3), one O(10), one O(2), one O(3), one O(4), and two equivalent O(11) atoms. The K(1)-H(3) bond length is 2.86 Å. The K(1)-O(10) bond length is 3.02 Å. The K(1)-O(2) bond length is 2.81 Å. The K(1)-O(3) bond length is 2.72 Å. The K(1)-O(4) bond length is 3.06 Å. There is one shorter (2.71 Å) and one longer (2.91 Å) K(1)-O(11) bond length. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(2), one O(5), one O(8), and two equivalent O(1) atoms. The K(2)-O(2) bond length is 2.84 Å. The K(2)-O(5) bond length is 2.80 Å. The K(2)-O(8) bond length is 2.81 Å. There is one shorter (2.83 Å) and one longer (2.84 Å) K(2)-O(1) bond length. In the third K site, K(3) is bonded in a 8-coordinate geometry to one H(3), one H(4), one O(10), one O(11), one O(12), one O(3), one O(4), and one O(8) atom. The K(3)-H(3) bond length is 2.78 Å. The K(3)-H(4) bond length is 2.85 Å. The K(3)-O(10) bond length is 3.14 Å. The K(3)-O(11) bond length is 2.74 Å. The K(3)-O(12) bond length is 3.28 Å. The K(3)-O(3) bond length is 2.80 Å. The K(3)-O(4) bond length is 2.70 Å. The K(3)-O(8) bond length is 2.67 Å. In the fourth K site, K(4) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and one O(7) atom. The K(4)-O(1) bond length is 2.76 Å. The K(4)-O(2) bond length is 2.91 Å. The K(4)-O(5) bond length is 2.70 Å. The K(4)-O(6) bond length is 2.64 Å. The K(4)-O(7) bond length is 2.90 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(2), one O(4), and one O(7) atom to form corner-sharing PO4 tetrahedra. The P(1)-O(10) bond length is 1.65 Å. The P(1)-O(2) bond length is 1.50 Å. The P(1)-O(4) bond length is 1.50 Å. The P(1)-O(7) bond length is 1.63 Å. In the second P site, P(2) is bonded to one O(11), one O(12), one O(6), and one O(9) atom to form corner-sharing PO4 tetrahedra. The P(2)-O(11) bond length is 1.50 Å. The P(2)-O(12) bond length is 1.64 Å. The P(2)-O(6) bond length is 1.49 Å. The P(2)-O(9) bond length is 1.64 Å. In the third P site, P(3) is bonded to one O(1), one O(10), one O(3), and one O(9) atom to form corner-sharing PO4 tetrahedra. The P(3)-O(1) bond length is 1.50 Å. The P(3)-O(10) bond length is 1.64 Å. The P(3)-O(3) bond length is 1.50 Å. The P(3)-O(9) bond length is 1.63 Å. In the fourth P site, P(4) is bonded to one O(12), one O(5), one O(7), and one O(8) atom to form corner-sharing PO4 tetrahedra. The P(4)-O(12) bond length is 1.64 Å. The P(4)-O(5) bond length is 1.49 Å. The P(4)-O(7) bond length is 1.66 Å. The P(4)-O(8) bond length is 1.50 Å. There are two inequivalent H sites. In the first H site, H(3) is bonded in a 3-coordinate geometry to one K(1), one K(3), and one H(4) atom. The H(3)-H(4) bond length is 0.76 Å. In the second H site, H(4) is bonded in a distorted single-bond geometry to one K(3) and one H(3) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(4), two equivalent K(2), and one P(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(4), and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one K(3), and one P(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(3), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), one K(4), and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(4) and one P(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one K(4), one P(1), and one P(4) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(2), one K(3), and one P(4) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one K(1), one K(3), one P(1), and one P(3) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(3), two equivalent K(1), and one P(2) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one K(3), one P(2), and one P(4) atom.