SrO7Br2 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 11-coordinate geometry to one O(4), two equivalent O(2), four equivalent O(1), and four equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Br(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one Br(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Sr(1) and one Br(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Sr(1) atom. Br(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom.
SrO7Br2 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 11-coordinate geometry to one O(4), two equivalent O(2), four equivalent O(1), and four equivalent O(3) atoms. The Sr(1)-O(4) bond length is 2.66 Å. Both Sr(1)-O(2) bond lengths are 2.63 Å. There are two shorter (2.79 Å) and two longer (2.99 Å) Sr(1)-O(1) bond lengths. There are two shorter (2.66 Å) and two longer (3.02 Å) Sr(1)-O(3) bond lengths. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Br(1) atom. The O(1)-Br(1) bond length is 1.69 Å. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one Br(1) atom. The O(2)-Br(1) bond length is 1.69 Å. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Sr(1) and one Br(1) atom. The O(3)-Br(1) bond length is 1.69 Å. In the fourth O site, O(4) is bonded in a single-bond geometry to one Sr(1) atom. Br(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom.