(H2O)2HCl crystallizes in the monoclinic P2_1/c space group. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one Cl(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(1) and one Cl(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) and one Cl(1) atom. In the fourth H site, H(4) is bonded in a linear geometry to one O(1) and one O(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(2) and one Cl(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one H(1), one H(2), and one H(4) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one H(3), one H(4), and one H(5) atom. Cl(1) is bonded in a 4-coordinate geometry to one H(1), one H(2), one H(3), and one H(5) atom.
(H2O)2HCl crystallizes in the monoclinic P2_1/c space group. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one Cl(1) atom. The H(1)-O(1) bond length is 0.98 Å. The H(1)-Cl(1) bond length is 2.14 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(1) and one Cl(1) atom. The H(2)-O(1) bond length is 0.98 Å. The H(2)-Cl(1) bond length is 2.12 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) and one Cl(1) atom. The H(3)-O(2) bond length is 1.00 Å. The H(3)-Cl(1) bond length is 2.04 Å. In the fourth H site, H(4) is bonded in a linear geometry to one O(1) and one O(2) atom. The H(4)-O(1) bond length is 1.30 Å. The H(4)-O(2) bond length is 1.12 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(2) and one Cl(1) atom. The H(5)-O(2) bond length is 1.00 Å. The H(5)-Cl(1) bond length is 2.00 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one H(1), one H(2), and one H(4) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one H(3), one H(4), and one H(5) atom. Cl(1) is bonded in a 4-coordinate geometry to one H(1), one H(2), one H(3), and one H(5) atom.