SrH(O3I)2 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 9-coordinate geometry to one H(1), two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. H(1) is bonded in a single-bond geometry to one Sr(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Sr(1) and one I(1) atom. I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(3) atom.
SrH(O3I)2 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 9-coordinate geometry to one H(1), two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. The Sr(1)-H(1) bond length is 2.79 Å. Both Sr(1)-O(1) bond lengths are 2.57 Å. Both Sr(1)-O(2) bond lengths are 2.59 Å. There are two shorter (2.70 Å) and two longer (3.16 Å) Sr(1)-O(3) bond lengths. H(1) is bonded in a single-bond geometry to one Sr(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. The O(1)-I(1) bond length is 1.82 Å. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(1) atom. The O(2)-I(1) bond length is 1.84 Å. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Sr(1) and one I(1) atom. The O(3)-I(1) bond length is 1.84 Å. I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(3) atom.