Sr(IO3)2 crystallizes in the orthorhombic P2_12_12_1 space group. Sr(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted corner-sharing SrO7 pentagonal bipyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(2) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one Sr(1) and one I(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one I(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(4), one O(5), and one O(6) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom.
Sr(IO3)2 crystallizes in the orthorhombic P2_12_12_1 space group. Sr(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted corner-sharing SrO7 pentagonal bipyramids. The Sr(1)-O(1) bond length is 2.61 Å. The Sr(1)-O(2) bond length is 2.56 Å. The Sr(1)-O(3) bond length is 2.63 Å. The Sr(1)-O(5) bond length is 2.57 Å. The Sr(1)-O(6) bond length is 2.49 Å. There is one shorter (2.52 Å) and one longer (2.59 Å) Sr(1)-O(4) bond length. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. The O(1)-I(1) bond length is 1.83 Å. The O(1)-I(2) bond length is 2.68 Å. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(2) atom. The O(2)-I(2) bond length is 1.81 Å. In the third O site, O(3) is bonded in a distorted water-like geometry to one Sr(1) and one I(2) atom. The O(3)-I(2) bond length is 1.81 Å. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one I(1) atom. The O(4)-I(1) bond length is 1.82 Å. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. The O(5)-I(1) bond length is 2.55 Å. The O(5)-I(2) bond length is 1.83 Å. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. The O(6)-I(1) bond length is 1.82 Å. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(4), one O(5), and one O(6) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom.