data_[Sb1Se1I1Br2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
  I  2.6600  1.4000  1.2733
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [5.4114]
_cell_length_b [5.4114]
_cell_length_c [5.8463]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [SbSeIBr2]
_chemical_formula_sum '[Sb1 Se1 I1 Br2]'
_cell_volume [171.2009]
_cell_formula_units_Z [1]
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
[
  Sb  Sb0  1  0.0000  0.0000  0.0000  1
  Se  Se1  1  0.0000  0.0000  0.5000  1
  I  I2  1  0.5000  0.5000  0.5000  1
  Br  Br3  2  0.0000  0.5000  0.0000  1
]