data_[Na2Ta4W4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ta  1.5000  1.4500  0.8200
  W  2.3600  1.3500  0.7667
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [8.7450]
_cell_length_b [8.7450]
_cell_length_c [2.6250]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Na(TaW)2]
_chemical_formula_sum '[Na2 Ta4 W4]'
_cell_volume [200.7469]
_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
  Ta  Ta1  4  0.1446  0.3554  0.0000  1
  W  W2  4  0.1475  0.6475  0.5000  1
]