Materials Data on Na3(PO3)4 by Materials Project
Na3(PO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Na sites. In the first Na site, Na is bonded to six O atoms to form distorted NaO6 octahedra that share corners with seven PO4 tetrahedra and edges with two equivalent NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.31–2.93 Å. In the second Na site, Na is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Na–O bond distances ranging from 2.33–2.79 Å. In the third Na site, Na is bonded to six O atoms to form NaO6 octahedra that share corners with six PO4 tetrahedra and edges with three NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.30–2.50 Å. There are four inequivalent P sites. In the first P site, P is bonded to four O atoms to form PO4 tetrahedra that share corners with three NaO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 32–68°. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. In the second P site, P is bonded to four O atoms to form PO4 tetrahedra that share corners with four NaO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 47–69°. There is two shorter (1.49 Å) and two longer (1.64 Å) P–O bond length. In the third P site, P is bonded to four O atoms to form PO4 tetrahedra that share corners with three NaO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 50–62°. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the fourth P site, P is bonded to four O atoms to form PO4 tetrahedra that share corners with three NaO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 54–62°. There are a spread of P–O bond distances ranging from 1.49–1.64 Å. There are twelve inequivalent O sites. In the first O site, O is bonded in a 4-coordinate geometry to three Na and one P atom. In the second O site, O is bonded in a distorted bent 150 degrees geometry to two P atoms. In the third O site, O is bonded in a bent 150 degrees geometry to one Na and one P atom. In the fourth O site, O is bonded in a rectangular see-saw-like geometry to three Na and one P atom. In the fifth O site, O is bonded in a bent 120 degrees geometry to two P atoms. In the sixth O site, O is bonded in a 3-coordinate geometry to two Na and one P atom. In the seventh O site, O is bonded in a 3-coordinate geometry to two Na and one P atom. In the eighth O site, O is bonded in a distorted rectangular see-saw-like geometry to three Na and one P atom. In the ninth O site, O is bonded in a 3-coordinate geometry to two Na and one P atom. In the tenth O site, O is bonded in a bent 150 degrees geometry to two P atoms. In the eleventh O site, O is bonded in a distorted single-bond geometry to one Na and one P atom. In the twelfth O site, O is bonded in a distorted bent 120 degrees geometry to one Na and two P atoms.