Na2S crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted trigonal planar geometry to five equivalent S(1) atoms. In the second Na site, Na(2) is bonded to six equivalent S(1) atoms to form a mixture of distorted edge, face, and corner-sharing NaS6 octahedra. The corner-sharing octahedral tilt angles are 50°. S(1) is bonded in a 11-coordinate geometry to five equivalent Na(1) and six equivalent Na(2) atoms.
Na2S crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted trigonal planar geometry to five equivalent S(1) atoms. There are three shorter (2.69 Å) and two longer (3.32 Å) Na(1)-S(1) bond lengths. In the second Na site, Na(2) is bonded to six equivalent S(1) atoms to form a mixture of distorted edge, face, and corner-sharing NaS6 octahedra. The corner-sharing octahedral tilt angles are 50°. All Na(2)-S(1) bond lengths are 3.16 Å. S(1) is bonded in a 11-coordinate geometry to five equivalent Na(1) and six equivalent Na(2) atoms.