data_[K4Rb6Na2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.8165]
_cell_length_b [3.8675]
_cell_length_c [7.7561]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.5807]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Rb3NaF6]
_chemical_formula_sum '[K4 Rb6 Na2 F12]'
_cell_volume [490.3385]
_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  0.1642  0.0000  0.3294  1
  Rb  Rb1  4  0.1664  0.0000  0.8374  1
  Rb  Rb2  2  0.0000  0.5000  0.5000  1
  Na  Na3  2  0.0000  0.5000  0.0000  1
  F  F4  4  0.0014  0.0000  0.2240  1
  F  F5  4  0.1523  0.5000  0.0843  1
  F  F6  4  0.1694  0.5000  0.5781  1
]