data_[Rb8F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I-43m]
_cell_length_a [8.5842]
_cell_length_b [8.5842]
_cell_length_c [8.5842]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [217]
_chemical_formula_structural [RbF]
_chemical_formula_sum '[Rb8 F8]'
_cell_volume [632.5636]
_cell_formula_units_Z [8]
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  8  0.1622  0.8378  0.8378  1.0
  F  F1  8  0.1577  0.1577  0.8423  1.0
]