data_[Pm4Pr4Br14]
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
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.8621]
_cell_length_b [12.4331]
_cell_length_c [7.9076]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.2813]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2Pr2Br7]
_chemical_formula_sum '[Pm4 Pr4 Br14]'
_cell_volume [870.5985]
_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  0.3548  0.5000  1
  Pm  Pm1  4  0.2023  0.5000  0.8526  1
  Br  Br2  8  0.2067  0.1993  0.2889  1
  Br  Br3  4  0.1301  0.5000  0.2208  1
  Br  Br4  2  0.0000  0.0000  0.0000  1
]