data_[Rb4U2I8Br4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  U  1.3800  1.7500  0.9913
  I  2.6600  1.4000  1.2733
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.8065]
_cell_length_b [8.5245]
_cell_length_c [7.2189]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.2469]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2U(I2Br)2]
_chemical_formula_sum '[Rb4 U2 I8 Br4]'
_cell_volume [830.2905]
_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  0.1709  0.5000  0.7485  1
  U  U1  2  0.0000  0.0000  0.5000  1
  I  I2  8  0.0928  0.2525  0.2984  1
  Br  Br3  4  0.1639  0.0000  0.7959  1
]