data_[Rb1Na2Cr1F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Cr  1.6600  1.4000  0.9400
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.8921]
_cell_length_b [5.1393]
_cell_length_c [7.6925]
_cell_angle_alpha [91.9553]
_cell_angle_beta [95.6363]
_cell_angle_gamma [90.4607]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbNa2CrF8]
_chemical_formula_sum '[Rb1 Na2 Cr1 F8]'
_cell_volume [192.3446]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5000  1.0
  Na  Na1  2  0.4790  0.4973  0.2157  1.0
  Cr  Cr2  1  0.0000  0.0000  0.0000  1.0
  F  F3  2  0.1841  0.8142  0.8392  1.0
  F  F4  2  0.2254  0.2860  0.9760  1.0
  F  F5  2  0.2496  0.8882  0.1875  1.0
  F  F6  2  0.2951  0.4867  0.4944  1.0
]