Materials Data on BaH2(CO3)2 by Materials Project
Ba(HO2)2(CO)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two formaldehyde molecules and one Ba(HO2)2 sheet oriented in the (0, 0, 1) direction. In the Ba(HO2)2 sheet, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.69–2.83 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Ba2+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Ba2+ atoms. In the third O2- site, O2- is bonded in a single-bond geometry to two equivalent Ba2+ and one H1+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to two equivalent Ba2+ and one H1+ atom.