data_[Pm8Pr6]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.6362]
_cell_length_b [5.2042]
_cell_length_c [8.2306]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.0627]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm4Pr3]
_chemical_formula_sum '[Pm8 Pr6]'
_cell_volume [493.4951]
_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  4  0.0716  0.5000  0.7119  1
  Pm  Pm1  4  0.1425  0.0000  0.4293  1
  Pr  Pr2  4  0.2141  0.5000  0.1445  1
  Pr  Pr3  2  0.0000  0.0000  0.0000  1
]