data_[Pm4Pr8Cu12]
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
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [5.0791]
_cell_length_b [15.2270]
_cell_length_c [7.2767]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [PmPr2Cu3]
_chemical_formula_sum '[Pm4 Pr8 Cu12]'
_cell_volume [562.7737]
_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  0.3329  0.0000  1
  Pr  Pr1  4  0.0000  0.3337  0.5000  1
  Pr  Pr2  2  0.0000  0.0000  0.0000  1
  Pr  Pr3  2  0.0000  0.0000  0.5000  1
  Cu  Cu4  8  0.0000  0.1686  0.2429  1
  Cu  Cu5  4  0.0000  0.5000  0.2444  1
]