Materials Data on Na3Al2(PO4)3 by Materials Project

Abstract

Na3Al2(PO4)3 is Esseneite-like structured and crystallizes in the cubic Ia-3d space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight equivalent O2- atoms. There are four shorter (2.33 Å) and four longer (2.50 Å) Na–O bond lengths. Al3+ is bonded to six equivalent O2- atoms to form AlO6 octahedra that share corners with six equivalent PO4 tetrahedra. All Al–O bond lengths are 1.94 Å. P5+ is bonded to four equivalent O2- atoms to form PO4 tetrahedra that share corners with four equivalent AlO6 octahedra. The corner-sharing octahedral tilt angles are 41°. All P–O bond lengths are 1.56 Å. O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one Al3+, and one P5+ atom.