data_[Si1Br1Cl1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Br  2.9600  1.1500  0.8825
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P3m1]
_cell_length_a [3.9107]
_cell_length_b [3.9107]
_cell_length_c [6.8787]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [156]
_chemical_formula_structural [SiBrCl]
_chemical_formula_sum '[Si1 Br1 Cl1]'
_cell_volume [91.1050]
_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
[
  Si  Si0  1  0.6667  0.3333  0.6565  1
  Br  Br1  1  0.0000  0.0000  0.8904  1
  Cl  Cl2  1  0.3333  0.6667  0.4531  1
]