Materials Data on BaH2O3 by Materials Project
BaH2O3 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Ba is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Ba–O bond distances ranging from 2.71–3.00 Å. There are two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. There are three inequivalent O sites. In the first O site, O is bonded in a distorted trigonal non-coplanar geometry to three equivalent Ba atoms. In the second O site, O is bonded in a single-bond geometry to three equivalent Ba and one H atom. In the third O site, O is bonded in a single-bond geometry to three equivalent Ba and one H atom.