data_[Pm8Pr22Y18]
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
  Y  1.2200  1.8000  1.0400
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [17.1734]
_cell_length_b [25.9393]
_cell_length_c [3.7422]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Pm4Pr11Y9]
_chemical_formula_sum '[Pm8 Pr22 Y18]'
_cell_volume [1666.9977]
_cell_formula_units_Z [2]
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  0.1557  0.3992  0.5000  1
  Pr  Pr1  8  0.2259  0.1810  0.0000  1
  Pr  Pr2  4  0.0000  0.1595  0.0000  1
  Pr  Pr3  4  0.0000  0.3672  0.0000  1
  Pr  Pr4  4  0.2089  0.5000  0.0000  1
  Pr  Pr5  2  0.0000  0.0000  0.0000  1
  Y  Y6  8  0.1014  0.2653  0.5000  1
  Y  Y7  8  0.1390  0.0731  0.5000  1
  Y  Y8  2  0.0000  0.5000  0.5000  1
]