data_[Rb4Cu4Sn2I12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cu  1.9000  1.3500  0.8200
  Sn  1.9600  1.4500  0.8300
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.2046]
_cell_length_b [8.5197]
_cell_length_c [9.1290]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.1431]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Cu2SnI6]
_chemical_formula_sum '[Rb4 Cu4 Sn2 I12]'
_cell_volume [964.9179]
_cell_formula_units_Z [2]
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  0.2174  0.5000  0.2034  1.0
  Cu  Cu1  4  0.0440  0.0000  0.2537  1.0
  Sn  Sn2  2  0.0000  0.5000  0.5000  1.0
  I  I3  8  0.0563  0.2563  0.8017  1.0
  I  I4  4  0.2480  0.0000  0.3712  1.0
]