data_[Pm4Pr4Al2]
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 [I4/mmm]
_cell_length_a [3.6521]
_cell_length_b [3.6521]
_cell_length_c [23.7793]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Pm2Pr2Al]
_chemical_formula_sum '[Pm4 Pr4 Al2]'
_cell_volume [317.1674]
_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
[
  Pr  Pr0  4  0.0000  0.0000  0.1937  1
  Pm  Pm1  4  0.0000  0.0000  0.4197  1
  Al  Al2  2  0.0000  0.0000  0.0000  1
]