data_[Rb4Na2Cu4I12]
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
  Cu  1.9000  1.3500  0.8200
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.6526]
_cell_length_b [7.7840]
_cell_length_c [9.4380]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.1359]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Na(CuI3)2]
_chemical_formula_sum '[Rb4 Na2 Cu4 I12]'
_cell_volume [940.2476]
_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  0.2090  0.5000  0.2117  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Cu  Cu2  4  0.0534  0.0000  0.2520  1.0
  I  I3  8  0.0618  0.2577  0.8070  1.0
  I  I4  4  0.2465  0.0000  0.3679  1.0
]