data_[Pm12Si4Ir2Br6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Si  1.9000  1.1000  0.5400
  Ir  2.2000  1.3500  0.7650
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.0286]
_cell_length_b [4.1742]
_cell_length_c [8.9582]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.5666]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm6Si2IrBr3]
_chemical_formula_sum '[Pm12 Si4 Ir2 Br6]'
_cell_volume [685.4457]
_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  0.0074  0.0000  0.2185  1
  Pm  Pm1  4  0.1526  0.5000  0.1064  1
  Pm  Pm2  4  0.1760  0.5000  0.5646  1
  Si  Si3  4  0.1658  0.0000  0.3387  1
  Ir  Ir4  2  0.0000  0.5000  0.0000  1
  Br  Br5  4  0.1736  0.0000  0.8346  1
  Br  Br6  2  0.0000  0.5000  0.5000  1
]