Na is beta Polonium-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to six equivalent Na(2) atoms to form a mixture of distorted corner and edge-sharing NaNa6 pentagonal pyramids. In the second Na site, Na(2) is bonded to six equivalent Na(1) atoms to form a mixture of corner, edge, and face-sharing NaNa6 octahedra. The corner-sharing octahedral tilt angles are 46°.
Na is beta Polonium-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to six equivalent Na(2) atoms to form a mixture of distorted corner and edge-sharing NaNa6 pentagonal pyramids. All Na(1)-Na(2) bond lengths are 3.43 Å. In the second Na site, Na(2) is bonded to six equivalent Na(1) atoms to form a mixture of corner, edge, and face-sharing NaNa6 octahedra. The corner-sharing octahedral tilt angles are 46°.