data_[Rb4F16]
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 [P4/mbm]
_cell_length_a [9.5988]
_cell_length_b [9.5988]
_cell_length_c [4.1411]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [RbF4]
_chemical_formula_sum '[Rb4 F16]'
_cell_volume [381.5512]
_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  0.2213  0.2787  0.0000  1.0
  F  F1  8  0.0093  0.2544  0.5000  1.0
  F  F2  4  0.0000  0.0000  0.1739  1.0
  F  F3  4  0.1156  0.6156  0.5000  1.0
]