data_[Rb2Cu2Ag2I8]
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 [P2_1/m]
_cell_length_a [7.2208]
_cell_length_b [7.4202]
_cell_length_c [11.1809]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.4397]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbCuAgI4]
_chemical_formula_sum '[Rb2 Cu2 Ag2 I8]'
_cell_volume [582.6639]
_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  2  0.2203  0.2500  0.0441  1.0
  Cu  Cu1  2  0.2016  0.7500  0.3009  1.0
  Ag  Ag2  2  0.3197  0.2500  0.7043  1.0
  I  I3  4  0.0418  0.5114  0.7289  1.0
  I  I4  2  0.3460  0.7500  0.0888  1.0
  I  I5  2  0.4875  0.7500  0.4835  1.0
]