Materials Data on Na3NO2 by Materials Project
Na3NO2 crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a square co-planar geometry to four O2- atoms. There are two shorter (2.33 Å) and two longer (2.62 Å) Na–O bond lengths. In the second Na1+ site, Na1+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are two shorter (2.30 Å) and one longer (2.68 Å) Na–O bond lengths. N1+ is bonded in an L-shaped geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.50 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to four Na1+ and two equivalent N1+ atoms. In the second O2- site, O2- is bonded to six Na1+ atoms to form corner-sharing ONa6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°.