Materials Data on BeAgPO4 by Materials Project
AgBePO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Be2+ sites. In the first Be2+ site, Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with four PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.63–1.66 Å. In the second Be2+ site, Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with four PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.63–1.65 Å. In the third Be2+ site, Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with four PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.62–1.66 Å. There are three inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Ag–O bond distances ranging from 2.37–2.58 Å. In the second Ag1+ site, Ag1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ag–O bond distances ranging from 2.40–2.85 Å. In the third Ag1+ site, Ag1+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Ag–O bond distances ranging from 2.62–3.20 Å. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four BeO4 tetrahedra. There is three shorter (1.55 Å) and one longer (1.56 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four BeO4 tetrahedra. All P–O bond lengths are 1.55 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four BeO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.54–1.56 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Be2+, two Ag1+, and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Be2+, two Ag1+, and one P5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Be2+, two Ag1+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, one Ag1+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two Ag1+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two Ag1+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two Ag1+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two equivalent Ag1+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two equivalent Ag1+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two equivalent Ag1+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Be2+, one Ag1+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Be2+, two Ag1+, and one P5+ atom.