data_[Rb8Tl4Ag4I20]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.8775]
_cell_length_b [21.3471]
_cell_length_c [15.3310]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Rb2TlAgI5]
_chemical_formula_sum '[Rb8 Tl4 Ag4 I20]'
_cell_volume [1596.2743]
_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  0.1119  0.6945  1.0
  Rb  Rb1  4  0.0000  0.1274  0.3301  1.0
  Tl  Tl2  4  0.0000  0.2058  0.0290  1.0
  Ag  Ag3  4  0.0000  0.4437  0.4227  1.0
  I  I4  4  0.0000  0.0487  0.0198  1.0
  I  I5  4  0.0000  0.2881  0.6742  1.0
  I  I6  4  0.0000  0.3068  0.3764  1.0
  I  I7  4  0.0000  0.3556  0.0135  1.0
  I  I8  4  0.0000  0.4925  0.7637  1.0
]