data_[Al1Co1Pb2Se1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  Co  1.8800  1.3500  0.7683
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [5.4201]
_cell_length_b [5.4201]
_cell_length_c [4.3144]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [AlCoPb2Se]
_chemical_formula_sum '[Al1 Co1 Pb2 Se1]'
_cell_volume [126.7480]
_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  0.5000  0.5000  0.5000  1
  Co  Co1  1  0.0000  0.0000  0.0000  1
  Pb  Pb2  2  0.0000  0.5000  0.0000  1
  Se  Se3  1  0.0000  0.0000  0.5000  1
]