data_[Nb6Pb4O16F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [3.9359]
_cell_length_b [3.9359]
_cell_length_c [33.1117]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Nb3Pb2(O2F)4]
_chemical_formula_sum '[Nb6 Pb4 O16 F8]'
_cell_volume [512.9392]
_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
[
  Nb  Nb0  4  0.0000  0.0000  0.1175  1.0
  Nb  Nb1  2  0.0000  0.0000  0.0000  1.0
  Pb  Pb2  4  0.0000  0.0000  0.2974  1.0
  O  O3  8  0.0000  0.5000  0.1285  1.0
  O  O4  4  0.0000  0.0000  0.0619  1.0
  O  O5  4  0.0000  0.5000  0.0000  1.0
  F  F6  4  0.0000  0.0000  0.1860  1.0
  F  F7  4  0.0000  0.5000  0.2500  1.0
]