DOI: 10.17188/1287529
title: Materials Data on Na5P3H2O11 by Materials Project

description: Na5P3H2O11 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 6-coordinate geometry to one H1+ and five O2- atoms. The Na–H bond length is 2.53 Å. There are a spread of Na–O bond distances ranging from 2.41–2.54 Å. In the second Na1+ site, Na1+ is bonded to six O2- atoms to form distorted NaO6 octahedra that share corners with four PO4 tetrahedra, edges with two equivalent NaO6 octahedra, and an edgeedge with one PO4 tetrahedra. There are a spread of Na–O bond distances ranging from 2.31–2.85 Å. In the third Na1+ site, Na1+ is bonded to six O2- atoms to form distorted NaO6 octahedra that share corners with six PO4 tetrahedra and edges with two equivalent NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.37–2.75 Å. In the fourth Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.40–2.65 Å. In the fifth Na1+ site, Na1+ is bonded in a 7-coordinate geometry to one H1+ and six O2- atoms. The Na–H bond length is 2.44 Å. There are a spread of Na–O bond distances ranging from 2.30–2.74 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 three NaO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 35–62°. There are a spread of P–O bond distances ranging from 1.52–1.68 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four NaO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–61°. There are a spread of P–O bond distances ranging from 1.52–1.63 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three NaO6 octahedra and an edgeedge with one NaO6 octahedra. The corner-sharing octahedra tilt angles range from 29–71°. There are a spread of P–O bond distances ranging from 1.53–1.58 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.23 Å. In the second H1+ site, H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.22 Å. In the third H1+ site, H1+ is bonded in a distorted single-bond geometry to two Na1+ and one H1+ atom. The H–H bond length is 0.75 Å. There are eleven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two P5+ atoms. In the second O2- site, O2- is bonded in a 1-coordinate geometry to four Na1+ and one P5+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three Na1+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Na1+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one P5+, and one H1+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to three Na1+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to three Na1+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to three Na1+, one P5+, and one H1+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Na1+ and one P5+ atom.