The compound described by Na crystallizes in the cubic Pm-3n space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to twelve equivalent Na(2) atoms to form a mixture of face and edge-sharing NaNa12 cuboctahedra. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent Na(2) and four equivalent Na(1) atoms. is represented by the CIF card [CIF]
data_Na
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.697
_cell_length_b   6.697
_cell_length_c   6.697
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   300.317
_cell_formula_units_Z   8
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.250  0.000  1.0
  Na  Na2  1  0.500  0.750  0.000  1.0
  Na  Na3  1  0.000  0.500  0.250  1.0
  Na  Na4  1  0.250  0.000  0.500  1.0
  Na  Na5  1  0.750  0.000  0.500  1.0
  Na  Na6  1  0.500  0.500  0.500  1.0
  Na  Na7  1  0.000  0.500  0.750  1.0
[/CIF]
.
The compound described by Na crystallizes in the cubic Pm-3n space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to twelve equivalent Na(2) atoms to form a mixture of face and edge-sharing NaNa12 cuboctahedra. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent Na(2) and four equivalent Na(1) atoms. is represented by the CIF card [CIF]
data_Na
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.697
_cell_length_b   6.697
_cell_length_c   6.697
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   300.317
_cell_formula_units_Z   8
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.250  0.000  1.0
  Na  Na2  1  0.500  0.750  0.000  1.0
  Na  Na3  1  0.000  0.500  0.250  1.0
  Na  Na4  1  0.250  0.000  0.500  1.0
  Na  Na5  1  0.750  0.000  0.500  1.0
  Na  Na6  1  0.500  0.500  0.500  1.0
  Na  Na7  1  0.000  0.500  0.750  1.0
[/CIF]
.