data_[Pm4Pr2Al4]
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
  Al  1.6100  1.2500  0.6750
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.7778]
_cell_length_b [3.7843]
_cell_length_c [13.5360]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.9539]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Pm2PrAl2]
_chemical_formula_sum '[Pm4 Pr2 Al4]'
_cell_volume [294.3623]
_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  2  0.1451  0.2500  0.1107  1
  Pm  Pm1  2  0.2591  0.7500  0.5392  1
  Pr  Pr2  2  0.3230  0.2500  0.7678  1
  Al  Al3  2  0.2119  0.2500  0.3422  1
  Al  Al4  2  0.3604  0.7500  0.9622  1
]