data_[Pm12Pr8Y4]
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 [C2/m]
_cell_length_a [17.4540]
_cell_length_b [5.7813]
_cell_length_c [10.0223]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.9694]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm3Pr2Y]
_chemical_formula_sum '[Pm12 Pr8 Y4]'
_cell_volume [828.7443]
_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  0.0010  0.0000  0.6693  1
  Pr  Pr1  4  0.0015  0.5000  0.8362  1
  Pm  Pm2  4  0.1243  0.5000  0.6195  1
  Pr  Pr3  4  0.2493  0.5000  0.0775  1
  Pm  Pm4  4  0.2494  0.5000  0.4125  1
  Y  Y5  4  0.1250  0.0000  0.1291  1
]