data_[K4Rb8Sn4F20]
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
  Sn  1.9600  1.4500  0.8300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.0621]
_cell_length_b [18.0497]
_cell_length_c [10.7745]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [KRb2SnF5]
_chemical_formula_sum '[K4 Rb8 Sn4 F20]'
_cell_volume [789.9761]
_cell_formula_units_Z [4]
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  0.1221  0.6802  1.0
  Rb  Rb1  4  0.0000  0.1314  0.2942  1.0
  K  K2  4  0.0000  0.2238  0.0070  1.0
  Sn  Sn3  4  0.0000  0.4669  0.4722  1.0
  F  F4  4  0.0000  0.0780  0.0369  1.0
  F  F5  4  0.0000  0.2762  0.6763  1.0
  F  F6  4  0.0000  0.3593  0.3880  1.0
  F  F7  4  0.0000  0.3660  0.9898  1.0
  F  F8  4  0.0000  0.4992  0.2793  1.0
]