data_[Rb8Tl4Ag4Br16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  Ag  1.9300  1.6000  1.0867
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.6940]
_cell_length_b [15.5990]
_cell_length_c [17.2850]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Rb2TlAgBr4]
_chemical_formula_sum '[Rb8 Tl4 Ag4 Br16]'
_cell_volume [1265.6241]
_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  8  0.0000  0.3654  0.5570  1.0
  Tl  Tl1  4  0.0000  0.1213  0.7500  1.0
  Ag  Ag2  4  0.0000  0.1585  0.2500  1.0
  Br  Br3  8  0.0000  0.2807  0.1344  1.0
  Br  Br4  4  0.0000  0.0000  0.0000  1.0
  Br  Br5  4  0.0000  0.4352  0.7500  1.0
]