data_[Pb4F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pb  2.3300  1.8000  1.1225
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P4_12_12]
_cell_length_a [5.3997]
_cell_length_b [5.3997]
_cell_length_c [8.1154]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [92]
_chemical_formula_structural [PbF2]
_chemical_formula_sum '[Pb4 F8]'
_cell_volume [236.6153]
_cell_formula_units_Z [4]
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
[
  Pb  Pb0  4  0.0254  0.0254  0.5000  1.0
  F  F1  8  0.1499  0.2269  0.2077  1.0
]