data_[K4Na2Br2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  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 [6.6407]
_cell_length_b [8.1620]
_cell_length_c [6.5931]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [K2NaBrF6]
_chemical_formula_sum '[K4 Na2 Br2 F12]'
_cell_volume [357.3568]
_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
[
  K  K0  4  0.0000  0.2573  0.8730  1.0
  Na  Na1  2  0.0000  0.5000  0.3101  1.0
  Br  Br2  2  0.0000  0.0000  0.3799  1.0
  F  F3  4  0.0000  0.2340  0.3804  1.0
  F  F4  4  0.2090  0.5000  0.6163  1.0
  F  F5  4  0.2428  0.5000  0.0798  1.0
]