data_[Ba2Cu2Pb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Cu  1.9000  1.3500  0.8200
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [5.1982]
_cell_length_b [5.1982]
_cell_length_c [11.2612]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [BaCuPb3]
_chemical_formula_sum '[Ba2 Cu2 Pb6]'
_cell_volume [304.2887]
_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
[
  Ba  Ba0  2  0.0000  0.0000  0.9973  1.0
  Cu  Cu1  2  0.0000  0.0000  0.3398  1.0
  Pb  Pb2  4  0.0000  0.5000  0.2504  1.0
  Pb  Pb3  2  0.0000  0.0000  0.5798  1.0
]