data_[Rb4Tl2Cu4I14]
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
  Cu  1.9000  1.3500  0.8200
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.6105]
_cell_length_b [5.6105]
_cell_length_c [29.0164]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Rb2TlCu2I7]
_chemical_formula_sum '[Rb4 Tl2 Cu4 I14]'
_cell_volume [913.3566]
_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  0.0000  0.0000  0.1783  1
  Tl  Tl1  2  0.0000  0.0000  0.0000  1
  Cu  Cu2  4  0.0000  0.0000  0.4028  1
  I  I3  8  0.0000  0.5000  0.0887  1
  I  I4  4  0.0000  0.0000  0.3084  1
  I  I5  2  0.0000  0.0000  0.5000  1
]