Materials Data on Na3Zn4P3O19 by Materials Project

Na3Zn4P3O19 crystallizes in the trigonal R3c space group. The structure is three-dimensional. Na is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Na–O bond distances ranging from 2.34–2.96 Å. There are two inequivalent Zn sites. In the first Zn site, Zn is bonded to four O atoms to form ZnO4 tetrahedra that share corners with three ZnO4 tetrahedra and corners with three equivalent PO4 tetrahedra. There are a spread of Zn–O bond distances ranging from 1.95–1.97 Å. In the second Zn site, Zn is bonded to four O atoms to form ZnO4 tetrahedra that share corners with three equivalent ZnO4 tetrahedra and corners with three equivalent PO4 tetrahedra. There is one shorter (1.97 Å) and three longer (1.99 Å) Zn–O bond length. P is bonded to four O atoms to form PO4 tetrahedra that share corners with four ZnO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. There are seven inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to one Zn and one P atom. In the second O site, O is bonded in a trigonal planar geometry to one Na, one Zn, and one P atom. In the third O site, O is bonded in a bent 120 degrees geometry to one Na and one O atom. The O–O bond length is 1.24 Å. In the fourth O site, O is bonded in a 2-coordinate geometry to one Na, one Zn, and one P atom. In the fifth O site, O is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na and one O atom. In the sixth O site, O is bonded in a tetrahedral geometry to four Zn atoms. In the seventh O site, O is bonded in a trigonal planar geometry to one Na, one Zn, and one P atom.