data_[Rb8Na4Sn4I20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  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 [5.0349]
_cell_length_b [20.6515]
_cell_length_c [16.0117]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Rb2NaSnI5]
_chemical_formula_sum '[Rb8 Na4 Sn4 I20]'
_cell_volume [1664.8662]
_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  0.1084  0.6765  1.0
  Rb  Rb1  4  0.0000  0.1495  0.3062  1.0
  Na  Na2  4  0.0000  0.2154  0.0294  1.0
  Sn  Sn3  4  0.0000  0.4682  0.4480  1.0
  I  I4  4  0.0000  0.0568  0.0603  1.0
  I  I5  4  0.0000  0.2807  0.6587  1.0
  I  I6  4  0.0000  0.3253  0.3879  1.0
  I  I7  4  0.0000  0.3728  0.9934  1.0
  I  I8  4  0.0000  0.4894  0.7637  1.0
]