Materials Data on NaSb3O8 by Materials Project

Abstract

NaSb3O8 is Hydrophilite-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na1+ is bonded to six O2- atoms to form NaO6 octahedra that share corners with eight SbO6 octahedra and edges with two equivalent SbO6 octahedra. The corner-sharing octahedra tilt angles range from 53–58°. There are a spread of Na–O bond distances ranging from 2.21–2.29 Å. There are two inequivalent Sb5+ sites. In the first Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with four equivalent NaO6 octahedra, corners with four equivalent SbO6 octahedra, and edges with two equivalent SbO6 octahedra. The corner-sharing octahedra tilt angles range from 42–56°. There are four shorter (1.98 Å) and two longer (2.14 Å) Sb–O bond lengths. In the second Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with two equivalent NaO6 octahedra, corners with six SbO6 octahedra, an edgeedge with one NaO6 octahedra, and an edgeedge with one SbO6 octahedra. The corner-sharing octahedra tilt angles range from 42–58°. There are a spread of Sb–O bond distances ranging from 1.97–2.12 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two Sb5+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to one Na1+ and two Sb5+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to three Sb5+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two equivalent Sb5+ atoms.