data_[Rb2Er2Ag2I12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [8.3430]
_cell_length_b [12.7739]
_cell_length_c [8.0889]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.4785]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [RbErAgI6]
_chemical_formula_sum '[Rb2 Er2 Ag2 I12]'
_cell_volume [856.5535]
_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  0.0000  0.0198  0.5000  1
  Er  Er1  2  0.0000  0.6790  0.0000  1
  Ag  Ag2  2  0.0000  0.3316  0.0000  1
  I  I3  4  0.1021  0.4940  0.2290  1
  I  I4  4  0.1797  0.8101  0.2550  1
  I  I5  4  0.1967  0.1794  0.1803  1
]