Materials Data on BaNaBO3 by Materials Project
NaBaBO3 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to six O2- atoms to form face-sharing NaO6 octahedra. There are two shorter (2.42 Å) and four longer (2.52 Å) Na–O bond lengths. In the second Na1+ site, Na1+ is bonded to six O2- atoms to form face-sharing NaO6 octahedra. There are four shorter (2.39 Å) and two longer (2.60 Å) Na–O bond lengths. Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.79–3.05 Å. B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.40 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, three equivalent Ba2+, and one B3+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, three equivalent Ba2+, and one B3+ atom.