data_[Pm8B2Br12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  B  2.0400  0.8500  0.4100
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P4_2/nmc]
_cell_length_a [9.5722]
_cell_length_b [9.5722]
_cell_length_c [7.1063]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [137]
_chemical_formula_structural [Pm4BBr6]
_chemical_formula_sum '[Pm8 B2 Br12]'
_cell_volume [651.1260]
_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  8  0.0000  0.2312  0.3511  1
  B  B1  2  0.0000  0.0000  0.5000  1
  Br  Br2  8  0.2035  0.7965  0.0000  1
  Br  Br3  4  0.0000  0.5000  0.1048  1
]