Na is beta structured and crystallizes in the cubic P4_132 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to six equivalent Na(1) and six equivalent Na(2) atoms to form a mixture of distorted face, corner, and edge-sharing NaNa12 cuboctahedra. In the second Na site, Na(2) is bonded to three equivalent Na(2) and nine equivalent Na(1) atoms to form a mixture of distorted face, corner, and edge-sharing NaNa12 cuboctahedra.
Na is beta structured and crystallizes in the cubic P4_132 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to six equivalent Na(1) and six equivalent Na(2) atoms to form a mixture of distorted face, corner, and edge-sharing NaNa12 cuboctahedra. There are four shorter (3.83 Å) and two longer (3.87 Å) Na(1)-Na(1) bond lengths. There are a spread of Na(1)-Na(2) bond distances ranging from 3.72-3.88 Å. In the second Na site, Na(2) is bonded to three equivalent Na(2) and nine equivalent Na(1) atoms to form a mixture of distorted face, corner, and edge-sharing NaNa12 cuboctahedra. All Na(2)-Na(2) bond lengths are 3.42 Å.