Materials Data on Na3B5SO8 by Materials Project
Na3B5O8S crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.90 Å. In the second Na1+ site, Na1+ is bonded to one S2- and six O2- atoms to form distorted NaSO6 hexagonal pyramids that share corners with two BO4 tetrahedra and edges with two BO4 tetrahedra. The Na–S bond length is 2.80 Å. There are a spread of Na–O bond distances ranging from 2.58–2.90 Å. In the third Na1+ site, Na1+ is bonded in a 5-coordinate geometry to three equivalent S2- and two O2- atoms. There are a spread of Na–S bond distances ranging from 2.77–2.96 Å. There are one shorter (2.48 Å) and one longer (2.61 Å) Na–O bond lengths. There are five inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.41 Å. In the second B3+ site, B3+ is bonded to four O2- atoms to form BO4 tetrahedra that share a cornercorner with one NaSO6 hexagonal pyramid, a cornercorner with one BO4 tetrahedra, and an edgeedge with one NaSO6 hexagonal pyramid. There are a spread of B–O bond distances ranging from 1.45–1.51 Å. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to one S2- and two O2- atoms. The B–S bond length is 1.83 Å. There is one shorter (1.38 Å) and one longer (1.39 Å) B–O bond length. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.40 Å) B–O bond length. In the fifth B3+ site, B3+ is bonded to four O2- atoms to form BO4 tetrahedra that share a cornercorner with one NaSO6 hexagonal pyramid, a cornercorner with one BO4 tetrahedra, and an edgeedge with one NaSO6 hexagonal pyramid. There are a spread of B–O bond distances ranging from 1.45–1.51 Å. S2- is bonded in a 5-coordinate geometry to four Na1+ and one B3+ atom. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+ and two B3+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Na1+ and two B3+ atoms. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Na1+ and two B3+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Na1+ and two B3+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+ and two B3+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to three Na1+ and two B3+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Na1+ and two B3+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Na1+ and two B3+ atoms.