data_[Rb4Na2Br2F12]
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
  Br  2.9600  1.1500  0.8825
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [6.8442]
_cell_length_b [8.3389]
_cell_length_c [6.7636]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Rb2NaBrF6]
_chemical_formula_sum '[Rb4 Na2 Br2 F12]'
_cell_volume [386.0167]
_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  0.2579  0.8683  1.0
  Na  Na1  2  0.0000  0.5000  0.3126  1.0
  Br  Br2  2  0.0000  0.0000  0.3886  1.0
  F  F3  4  0.0000  0.2306  0.3878  1.0
  F  F4  4  0.2168  0.5000  0.6070  1.0
  F  F5  4  0.2350  0.5000  0.0861  1.0
]