data_[Rb4Cu4Ag2I12]
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
  Ag  1.9300  1.6000  1.0867
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.2248]
_cell_length_b [7.8230]
_cell_length_c [8.7117]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.4683]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Cu2AgI6]
_chemical_formula_sum '[Rb4 Cu4 Ag2 I12]'
_cell_volume [912.1297]
_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  0.2124  0.5000  0.2112  1.0
  Cu  Cu1  4  0.0556  0.0000  0.2613  1.0
  Ag  Ag2  2  0.0000  0.5000  0.5000  1.0
  I  I3  8  0.0561  0.2544  0.7799  1.0
  I  I4  4  0.2342  0.0000  0.3303  1.0
]