data_[Ba6Sr2Br16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Sr  0.9500  2.0000  1.3200
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [7.7256]
_cell_length_b [7.7256]
_cell_length_c [15.4528]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Ba3SrBr8]
_chemical_formula_sum '[Ba6 Sr2 Br16]'
_cell_volume [922.3063]
_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
[
  Ba  Ba0  4  0.0000  0.5000  0.2500  1.0
  Ba  Ba1  2  0.0000  0.0000  0.5000  1.0
  Sr  Sr2  2  0.0000  0.0000  0.0000  1.0
  Br  Br3  16  0.2447  0.2447  0.1225  1.0
]