data_[Na8W8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  W  2.3600  1.3500  0.7667
]
_symmetry_space_group_name_H-M [I4/m]
_cell_length_a [13.1829]
_cell_length_b [13.1829]
_cell_length_c [3.0260]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [NaW]
_chemical_formula_sum '[Na8 W8]'
_cell_volume [525.8821]
_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  8  0.0383  0.8128  0.5000  1
  W  W1  8  0.1888  0.2814  0.5000  1
]