data_[Al1Pb1N1F2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  Pb  2.3300  1.8000  1.1225
  N  3.0400  0.6500  0.6300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [4.0260]
_cell_length_b [4.0260]
_cell_length_c [3.8490]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [AlPbNF2]
_chemical_formula_sum '[Al1 Pb1 N1 F2]'
_cell_volume [62.3865]
_cell_formula_units_Z [1]
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
[
  Al  Al0  1  0.0000  0.0000  0.0000  1
  Pb  Pb1  1  0.5000  0.5000  0.5000  1
  N  N2  1  0.0000  0.0000  0.5000  1
  F  F3  2  0.0000  0.5000  0.0000  1
]