BaS2O8 crystallizes in the monoclinic C2/c space group. The structure consists of four hydrogen peroxide molecules inside a Ba(SO3)2 framework. In the Ba(SO3)2 framework, Ba(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. S(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ba(1) and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Ba(1) and one S(1) atom.
BaS2O8 crystallizes in the monoclinic C2/c space group. The structure consists of four hydrogen peroxide molecules inside a Ba(SO3)2 framework. In the Ba(SO3)2 framework, Ba(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Ba(1)-O(1) bond lengths are 2.79 Å. Both Ba(1)-O(2) bond lengths are 2.63 Å. Both Ba(1)-O(3) bond lengths are 2.81 Å. S(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. The S(1)-O(1) bond length is 1.47 Å. The S(1)-O(2) bond length is 1.47 Å. The S(1)-O(3) bond length is 1.47 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ba(1) and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Ba(1) and one S(1) atom.