Materials Data on NaNO2 by Materials Project

Abstract

NaNO2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one NaNO2 sheet oriented in the (0, 0, 1) direction. Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.47–2.71 Å. N3+ is bonded in a bent 120 degrees geometry to two O2- atoms. Both N–O bond lengths are 1.27 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent Na1+ and one N3+ atom to form a mixture of distorted edge and corner-sharing ONa3N tetrahedra. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three equivalent Na1+ and one N3+ atom.