data_[La2Pm2Sm2Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [4.9057]
_cell_length_b [4.9057]
_cell_length_c [10.4300]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [LaPmSmPb]
_chemical_formula_sum '[La2 Pm2 Sm2 Pb2]'
_cell_volume [251.0100]
_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
[
  La  La0  2  0.0000  0.0000  0.0000  1
  Pm  Pm1  2  0.0000  0.0000  0.5000  1
  Sm  Sm2  2  0.0000  0.5000  0.2500  1
  Pb  Pb3  2  0.0000  0.5000  0.7500  1
]