Sr(OH)2H2O crystallizes in the monoclinic P2_1 space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Sr(1), one H(1), and one H(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one H(1), one H(2), and one H(3) atom. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Sr(1) and one H(4) atom.
Sr(OH)2H2O crystallizes in the monoclinic P2_1 space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There is one shorter (2.66 Å) and one longer (2.68 Å) Sr(1)-O(1) bond length. There is one shorter (2.65 Å) and one longer (2.66 Å) Sr(1)-O(2) bond length. There are two shorter (2.61 Å) and two longer (2.66 Å) Sr(1)-O(3) bond lengths. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.01 Å. The H(1)-O(2) bond length is 1.63 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. The H(2)-O(1) bond length is 1.00 Å. The H(2)-O(2) bond length is 1.63 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. The H(3)-O(2) bond length is 0.97 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(3) atom. The H(4)-O(3) bond length is 0.97 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Sr(1), one H(1), and one H(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one H(1), one H(2), and one H(3) atom. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Sr(1) and one H(4) atom.