data_[Pm18Pr18Cd6]
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
  Cd  1.6900  1.5500  1.0900
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [8.6900]
_cell_length_b [8.6900]
_cell_length_c [22.2329]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Pm3Pr3Cd]
_chemical_formula_sum '[Pm18 Pr18 Cd6]'
_cell_volume [1454.0007]
_cell_formula_units_Z [6]
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  18  0.0438  0.7841  0.2141  1
  Pr  Pr1  18  0.0479  0.7747  0.0560  1
  Cd  Cd2  6  0.0000  0.0000  0.3328  1
]