SrPH3O4 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 7-coordinate geometry to one O(2), one O(4), two equivalent O(3), and three equivalent O(1) atoms. P(1) is bonded in a distorted tetrahedral geometry to one H(1), one O(1), one O(3), and one O(4) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one P(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) and one O(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Sr(1) and one P(1) atom. In the second O site, O(2) is bonded in a water-like geometry to one Sr(1), one H(2), and one H(3) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one P(1), and one H(2) atom.
SrPH3O4 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 7-coordinate geometry to one O(2), one O(4), two equivalent O(3), and three equivalent O(1) atoms. The Sr(1)-O(2) bond length is 2.58 Å. The Sr(1)-O(4) bond length is 2.51 Å. There is one shorter (2.58 Å) and one longer (2.65 Å) Sr(1)-O(3) bond length. There are a spread of Sr(1)-O(1) bond distances ranging from 2.59-2.73 Å. P(1) is bonded in a distorted tetrahedral geometry to one H(1), one O(1), one O(3), and one O(4) atom. The P(1)-H(1) bond length is 1.41 Å. The P(1)-O(1) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(4) bond length is 1.53 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one P(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) and one O(4) atom. The H(2)-O(2) bond length is 1.00 Å. The H(2)-O(4) bond length is 1.74 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 0.99 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Sr(1) and one P(1) atom. In the second O site, O(2) is bonded in a water-like geometry to one Sr(1), one H(2), and one H(3) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one P(1), and one H(2) atom.