data_[Pm20Pr8Sm12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
  Sm  1.1700  1.8500  1.2290
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.9431]
_cell_length_b [16.2422]
_cell_length_c [9.6222]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.6444]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm5Pr2Sm3]
_chemical_formula_sum '[Pm20 Pr8 Sm12]'
_cell_volume [1407.0243]
_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
[
  Pr  Pr0  8  0.1409  0.8735  0.5486  1
  Pm  Pm1  8  0.2331  0.3775  0.2184  1
  Pm  Pm2  4  0.0000  0.2295  0.2500  1
  Pm  Pm3  4  0.0000  0.2758  0.7500  1
  Pm  Pm4  4  0.0000  0.4715  0.7500  1
  Sm  Sm5  8  0.1570  0.3776  0.5459  1
  Sm  Sm6  4  0.0000  0.0215  0.2500  1
]