data_[Rb4Cr2Fe2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cr  1.6600  1.4000  0.9400
  Fe  1.8300  1.4000  0.8525
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.9661]
_cell_length_b [5.9661]
_cell_length_c [8.9039]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Rb2CrFeF6]
_chemical_formula_sum '[Rb4 Cr2 Fe2 F12]'
_cell_volume [316.9258]
_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  0.0000  0.5000  0.2500  1.0
  Cr  Cr1  2  0.0000  0.0000  0.5000  1.0
  Fe  Fe2  2  0.0000  0.0000  0.0000  1.0
  F  F3  8  0.2423  0.2423  0.5000  1.0
  F  F4  4  0.0000  0.0000  0.2255  1.0
]