data_[Pm8Y4Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Y  1.2200  1.8000  1.0400
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.1150]
_cell_length_b [18.6741]
_cell_length_c [6.6194]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Pm2YPb2]
_chemical_formula_sum '[Pm8 Y4 Pb8]'
_cell_volume [632.2704]
_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
[
  Pm  Pm0  4  0.0000  0.0000  0.0000  1
  Pm  Pm1  4  0.0000  0.1918  0.2500  1
  Y  Y2  4  0.0000  0.3959  0.2500  1
  Pb  Pb3  4  0.0000  0.1923  0.7500  1
  Pb  Pb4  4  0.0000  0.4236  0.7500  1
]