data_[Na2Tl4W4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
  W  2.3600  1.3500  0.7667
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [3.9492]
_cell_length_b [3.9492]
_cell_length_c [23.6529]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [NaTl2W2O7]
_chemical_formula_sum '[Na2 Tl4 W4 O14]'
_cell_volume [368.8921]
_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  0.0000  0.0000  0.0000  1.0
  Tl  Tl1  4  0.0000  0.0000  0.1886  1.0
  W  W2  4  0.0000  0.0000  0.4152  1.0
  O  O3  8  0.0000  0.5000  0.0811  1.0
  O  O4  4  0.0000  0.0000  0.3355  1.0
  O  O5  2  0.0000  0.0000  0.5000  1.0
]