Materials Data on NaSb5O13 by Materials Project
NaSb5O13 crystallizes in the orthorhombic Ama2 space group. The structure is three-dimensional. Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.59–2.75 Å. There are three inequivalent Sb5+ sites. In the first Sb5+ site, Sb5+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedra tilt angles range from 45–53°. There are a spread of Sb–O bond distances ranging from 1.95–2.11 Å. In the second Sb5+ site, Sb5+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedra tilt angles range from 51–53°. There are a spread of Sb–O bond distances ranging from 1.94–2.08 Å. In the third Sb5+ site, Sb5+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing SbO6 octahedra. The corner-sharing octahedra tilt angles range from 33–47°. There are a spread of Sb–O bond distances ranging from 1.94–2.16 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to three Sb5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Sb5+ atoms. In the third O2- site, O2- is bonded in a 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 Sb5+ atoms. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two Sb5+ atoms. In the sixth O2- site, O2- is bonded in a trigonal planar geometry to three Sb5+ atoms. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two Sb5+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+ and two equivalent Sb5+ atoms.