data_[Rb4Br4O8F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Br  2.9600  1.1500  0.8825
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [7.6804]
_cell_length_b [8.6717]
_cell_length_c [8.4795]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [RbBr(OF)2]
_chemical_formula_sum '[Rb4 Br4 O8 F8]'
_cell_volume [564.7512]
_cell_formula_units_Z [4]
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  0.0000  0.0000  0.0000  1.0
  Br  Br1  4  0.0000  0.4431  0.7500  1.0
  O  O2  8  0.0000  0.3333  0.5925  1.0
  F  F3  8  0.2389  0.0223  0.2500  1.0
]