Ba(SO2)4 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(8), and two equivalent O(7) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded in a single-bond geometry to one S(2) and one O(8) atom. In the second S site, S(2) is bonded in a water-like geometry to one S(1) and one S(4) atom. In the third S site, S(3) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. In the fourth S site, S(4) is bonded in a distorted trigonal non-coplanar geometry to one S(2), one O(4), one O(5), and one O(6) atom. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(4) atom. In the second O site, O(5) is bonded in a distorted single-bond geometry to one Ba(1) and one S(4) atom. In the third O site, O(6) is bonded in a single-bond geometry to one Ba(1) and one S(4) atom. In the fourth O site, O(7) is bonded in a bent 150 degrees geometry to two equivalent Ba(1) atoms. In the fifth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(1) atom. In the sixth O site, O(1) is bonded in a distorted single-bond geometry to one Ba(1) and one S(3) atom. In the seventh O site, O(2) is bonded in a distorted single-bond geometry to one Ba(1) and one S(3) atom. In the eighth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(3) atom.
Ba(SO2)4 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(8), and two equivalent O(7) atoms. The Ba(1)-O(1) bond length is 2.77 Å. The Ba(1)-O(2) bond length is 2.90 Å. The Ba(1)-O(3) bond length is 2.80 Å. The Ba(1)-O(4) bond length is 2.77 Å. The Ba(1)-O(5) bond length is 2.75 Å. The Ba(1)-O(6) bond length is 3.13 Å. The Ba(1)-O(8) bond length is 2.85 Å. There is one shorter (2.86 Å) and one longer (2.90 Å) Ba(1)-O(7) bond length. There are four inequivalent S sites. In the first S site, S(1) is bonded in a single-bond geometry to one S(2) and one O(8) atom. The S(1)-S(2) bond length is 2.09 Å. The S(1)-O(8) bond length is 1.49 Å. In the second S site, S(2) is bonded in a water-like geometry to one S(1) and one S(4) atom. The S(2)-S(4) bond length is 2.18 Å. In the third S site, S(3) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. The S(3)-O(1) bond length is 1.46 Å. The S(3)-O(2) bond length is 1.46 Å. The S(3)-O(3) bond length is 1.47 Å. In the fourth S site, S(4) is bonded in a distorted trigonal non-coplanar geometry to one S(2), one O(4), one O(5), and one O(6) atom. The S(4)-O(4) bond length is 1.45 Å. The S(4)-O(5) bond length is 1.46 Å. The S(4)-O(6) bond length is 1.46 Å. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(4) atom. In the second O site, O(5) is bonded in a distorted single-bond geometry to one Ba(1) and one S(4) atom. In the third O site, O(6) is bonded in a single-bond geometry to one Ba(1) and one S(4) atom. In the fourth O site, O(7) is bonded in a bent 150 degrees geometry to two equivalent Ba(1) atoms. In the fifth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(1) atom. In the sixth O site, O(1) is bonded in a distorted single-bond geometry to one Ba(1) and one S(3) atom. In the seventh O site, O(2) is bonded in a distorted single-bond geometry to one Ba(1) and one S(3) atom. In the eighth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one S(3) atom.