BaSO2 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 7-coordinate geometry to one S(1), three equivalent O(1), and three equivalent O(2) atoms. S(1) is bonded in a water-like geometry to one Ba(1), one O(1), and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one S(1) atom.
BaSO2 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 7-coordinate geometry to one S(1), three equivalent O(1), and three equivalent O(2) atoms. The Ba(1)-S(1) bond length is 3.41 Å. There is one shorter (2.66 Å) and two longer (2.78 Å) Ba(1)-O(1) bond lengths. There is one shorter (2.90 Å) and two longer (3.00 Å) Ba(1)-O(2) bond lengths. S(1) is bonded in a water-like geometry to one Ba(1), one O(1), and one O(2) atom. The S(1)-O(1) bond length is 1.60 Å. The S(1)-O(2) bond length is 1.57 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one S(1) atom.