data_[Rb12Ag4I20]
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
]
_symmetry_space_group_name_H-M [I4/mcm]
_cell_length_a [9.9488]
_cell_length_b [9.9488]
_cell_length_c [16.8312]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [Rb3AgI5]
_chemical_formula_sum '[Rb12 Ag4 I20]'
_cell_volume [1665.9305]
_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  0.1503  0.3497  0.0000  1.0
  Rb  Rb1  4  0.0000  0.0000  0.2500  1.0
  Ag  Ag2  4  0.0000  0.5000  0.2500  1.0
  I  I3  16  0.1531  0.3469  0.3565  1.0
  I  I4  4  0.0000  0.0000  0.0000  1.0
]