Materials Data on Ba2B(PO4)2 by Materials Project
Ba2B(PO4)2 crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.86–3.06 Å. B3+ is bonded to four equivalent O2- atoms to form BO4 tetrahedra that share corners with four equivalent PO4 tetrahedra. All B–O bond lengths are 1.47 Å. P+4.50+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent BO4 tetrahedra. There is two shorter (1.53 Å) and two longer (1.59 Å) P–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one B3+, and one P+4.50+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Ba2+ and one P+4.50+ atom.