data_[Rb8Tl4Sn4I20]
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
  Sn  1.9600  1.4500  0.8300
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.8790]
_cell_length_b [21.3025]
_cell_length_c [17.0926]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Rb2TlSnI5]
_chemical_formula_sum '[Rb8 Tl4 Sn4 I20]'
_cell_volume [1776.5379]
_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  0.0810  0.6462  1.0
  Rb  Rb1  4  0.0000  0.1330  0.2983  1.0
  Tl  Tl2  4  0.0000  0.4521  0.4485  1.0
  Sn  Sn3  4  0.0000  0.2326  0.0334  1.0
  I  I4  4  0.0000  0.0899  0.0767  1.0
  I  I5  4  0.0000  0.2533  0.6627  1.0
  I  I6  4  0.0000  0.2893  0.4104  1.0
  I  I7  4  0.0000  0.3806  0.9857  1.0
  I  I8  4  0.0000  0.4966  0.7622  1.0
]