data_[Rb2Se4I2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Se  2.5500  1.1500  1.0133
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.8885]
_cell_length_b [5.5401]
_cell_length_c [7.6485]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.8582]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbSe2IO8]
_chemical_formula_sum '[Rb2 Se4 I2 O16]'
_cell_volume [441.1958]
_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  0.5000  0.5000  1.0
  Se  Se1  4  0.2029  0.5000  0.1653  1.0
  I  I2  2  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.1239  0.2625  0.2132  1.0
  O  O4  4  0.1473  0.0000  0.6581  1.0
  O  O5  4  0.1714  0.5000  0.9318  1.0
]