data_[Pm12Sm20Y8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Y  1.2200  1.8000  1.0400
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.8423]
_cell_length_b [15.0252]
_cell_length_c [9.9953]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.5930]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm3Sm5Y2]
_chemical_formula_sum '[Pm12 Sm20 Y8]'
_cell_volume [1371.8896]
_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  8  0.1491  0.3744  0.0554  1
  Pm  Pm1  4  0.0000  0.2726  0.2500  1
  Sm  Sm2  8  0.2380  0.1239  0.2324  1
  Sm  Sm3  4  0.0000  0.0260  0.7500  1
  Sm  Sm4  4  0.0000  0.2308  0.7500  1
  Sm  Sm5  4  0.0000  0.4826  0.2500  1
  Y  Y6  8  0.1555  0.1239  0.5519  1
]