Ba(H2O3)2 crystallizes in the monoclinic C2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(3) atom. In the third H site, H(3) is bonded in a distorted linear geometry to one O(4) and one O(5) atom. In the fourth H site, H(4) is bonded in a linear geometry to one O(1) and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Ba(1), one Ba(2), and one H(4) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one O(4) atom. In the third O site, O(3) is bonded in a water-like geometry to one Ba(2), one H(1), and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Ba(1), one H(3), and one O(2) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one Ba(2) and one H(3) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Ba(2) and one H(4) atom.
Ba(H2O3)2 crystallizes in the monoclinic C2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Both Ba(1)-O(1) bond lengths are 2.86 Å. Both Ba(1)-O(2) bond lengths are 2.78 Å. Both Ba(1)-O(4) bond lengths are 2.76 Å. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. Both Ba(2)-O(1) bond lengths are 2.89 Å. Both Ba(2)-O(2) bond lengths are 2.75 Å. Both Ba(2)-O(3) bond lengths are 2.92 Å. Both Ba(2)-O(5) bond lengths are 2.78 Å. Both Ba(2)-O(6) bond lengths are 2.87 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(3) atom. The H(2)-O(3) bond length is 0.99 Å. In the third H site, H(3) is bonded in a distorted linear geometry to one O(4) and one O(5) atom. The H(3)-O(4) bond length is 1.55 Å. The H(3)-O(5) bond length is 1.03 Å. In the fourth H site, H(4) is bonded in a linear geometry to one O(1) and one O(6) atom. The H(4)-O(1) bond length is 1.33 Å. The H(4)-O(6) bond length is 1.13 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Ba(1), one Ba(2), and one H(4) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one O(4) atom. The O(2)-O(4) bond length is 1.35 Å. In the third O site, O(3) is bonded in a water-like geometry to one Ba(2), one H(1), and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Ba(1), one H(3), and one O(2) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one Ba(2) and one H(3) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Ba(2) and one H(4) atom.