data_[Si2Br4Cl2]
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 [Cm]
_cell_length_a [13.4418]
_cell_length_b [3.2978]
_cell_length_c [7.1473]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.3160]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [SiBr2Cl]
_chemical_formula_sum '[Si2 Br4 Cl2]'
_cell_volume [278.9193]
_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
[
  Si  Si0  2  0.2524  0.5000  0.3749  1
  Br  Br1  2  0.1081  0.0000  0.1059  1
  Br  Br2  2  0.2541  0.0000  0.6535  1
  Cl  Cl3  2  0.3855  0.0000  0.3658  1
]