data_[Na4Pb4W2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pb  2.3300  1.8000  1.1225
  W  2.3600  1.3500  0.7667
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.2624]
_cell_length_b [9.7275]
_cell_length_c [6.0071]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.1413]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Pb2WO6]
_chemical_formula_sum '[Na4 Pb4 W2 O12]'
_cell_volume [343.5599]
_cell_formula_units_Z [2]
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  4  0.0000  0.3459  0.5000  1.0
  Pb  Pb1  4  0.0000  0.1824  0.0000  1.0
  W  W2  2  0.0000  0.0000  0.5000  1.0
  O  O3  8  0.1926  0.1439  0.6981  1.0
  O  O4  4  0.1868  0.0000  0.2861  1.0
]