data_[Rb8Ag4I4Br16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ag  1.9300  1.6000  1.0867
  I  2.6600  1.4000  1.2733
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [11.6911]
_cell_length_b [11.9090]
_cell_length_c [11.4389]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [Rb2AgIBr4]
_chemical_formula_sum '[Rb8 Ag4 I4 Br16]'
_cell_volume [1592.6192]
_cell_formula_units_Z [4]
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
[
  Rb  Rb0  4  0.0000  0.0000  0.0000  1.0
  Rb  Rb1  4  0.2500  0.2500  0.2500  1.0
  Ag  Ag2  4  0.0000  0.0000  0.5000  1.0
  I  I3  4  0.2500  0.2500  0.7500  1.0
  Br  Br4  8  0.0000  0.0754  0.2960  1.0
  Br  Br5  8  0.1652  0.7500  0.0285  1.0
]