Sr(IO3)2 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 8-coordinate geometry to one O(2), one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(3) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one I(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1) and one I(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one I(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sr(1) and one I(2) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a distorted T-shaped geometry to one O(1), one O(3), and one O(4) atom. In the second I site, I(2) is bonded in a trigonal non-coplanar geometry to one O(2), one O(5), and one O(6) atom.
Sr(IO3)2 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 8-coordinate geometry to one O(2), one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(3) atoms. The Sr(1)-O(2) bond length is 2.63 Å. The Sr(1)-O(4) bond length is 2.58 Å. The Sr(1)-O(5) bond length is 2.59 Å. The Sr(1)-O(6) bond length is 2.55 Å. There is one shorter (2.48 Å) and one longer (2.60 Å) Sr(1)-O(1) bond length. There is one shorter (2.52 Å) and one longer (2.87 Å) Sr(1)-O(3) bond length. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one I(1) atom. The O(1)-I(1) bond length is 1.80 Å. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1) and one I(2) atom. The O(2)-I(2) bond length is 1.83 Å. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one I(1) atom. The O(3)-I(1) bond length is 1.81 Å. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. The O(4)-I(1) bond length is 1.81 Å. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(2) atom. The O(5)-I(2) bond length is 1.81 Å. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sr(1) and one I(2) atom. The O(6)-I(2) bond length is 1.80 Å. There are two inequivalent I sites. In the first I site, I(1) is bonded in a distorted T-shaped geometry to one O(1), one O(3), and one O(4) atom. In the second I site, I(2) is bonded in a trigonal non-coplanar geometry to one O(2), one O(5), and one O(6) atom.