data_[Na4W2O8]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.3415]
_cell_length_b [6.3101]
_cell_length_c [6.6054]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.5757]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Na2WO4]
_chemical_formula_sum '[Na4 W2 O8]'
_cell_volume [263.4795]
_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  2  0.1838  0.2500  0.3786  1
  Na  Na1  2  0.3409  0.2500  0.9336  1
  W  W2  2  0.1735  0.7500  0.1547  1
  O  O3  4  0.3470  0.5199  0.1943  1
  O  O4  2  0.0439  0.2500  0.6810  1
  O  O5  2  0.0606  0.7500  0.8961  1
]