Materials Data on NaNbN2 by Materials Project
NaNbN2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Na1+ is bonded to six equivalent N3- atoms to form distorted NaN6 octahedra that share corners with six equivalent NbN6 octahedra, edges with six equivalent NaN6 octahedra, and edges with six equivalent NbN6 octahedra. The corner-sharing octahedral tilt angles are 12°. All Na–N bond lengths are 2.52 Å. Nb5+ is bonded to six equivalent N3- atoms to form NbN6 octahedra that share corners with six equivalent NaN6 octahedra, edges with six equivalent NaN6 octahedra, and edges with six equivalent NbN6 octahedra. The corner-sharing octahedral tilt angles are 12°. All Nb–N bond lengths are 2.13 Å. N3- is bonded to three equivalent Na1+ and three equivalent Nb5+ atoms to form a mixture of corner and edge-sharing NNa3Nb3 octahedra. The corner-sharing octahedral tilt angles are 0°.