data_[Ir8Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ir  2.2000  1.3500  0.7650
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P4/m]
_cell_length_a [11.7767]
_cell_length_b [11.7767]
_cell_length_c [3.5949]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [83]
_chemical_formula_structural [IrBr]
_chemical_formula_sum '[Ir8 Br8]'
_cell_volume [498.5766]
_cell_formula_units_Z [8]
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
[
  Ir  Ir0  4  0.0589  0.4191  0.0000  1
  Ir  Ir1  4  0.1666  0.5097  0.5000  1
  Br  Br2  4  0.0579  0.2541  0.5000  1
  Br  Br3  4  0.2779  0.6070  0.0000  1
]