data_[Pm12Pr8Tl16]
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
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [7.3939]
_cell_length_b [16.5305]
_cell_length_c [9.5038]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Pm3(PrTl2)2]
_chemical_formula_sum '[Pm12 Pr8 Tl16]'
_cell_volume [1161.6057]
_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  0.0000  0.1079  0.5711  1
  Pm  Pm1  8  0.2500  0.2179  0.2500  1
  Pm  Pm2  4  0.0000  0.0000  0.0000  1
  Tl  Tl3  8  0.0000  0.1883  0.9660  1
  Tl  Tl4  8  0.2500  0.0266  0.2500  1
]