data_[K8Sn8F20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Sn  1.9600  1.4500  0.8300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [17.8831]
_cell_length_b [6.9272]
_cell_length_c [6.1403]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [K2Sn2F5]
_chemical_formula_sum '[K8 Sn8 F20]'
_cell_volume [760.6571]
_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
[
  K  K0  8  0.1373  0.0562  0.4814  1
  Sn  Sn1  4  0.0000  0.0000  0.0259  1
  Sn  Sn2  4  0.2500  0.6318  0.4851  1
  F  F3  8  0.0464  0.1819  0.7803  1
  F  F4  8  0.1183  0.6459  0.4861  1
  F  F5  4  0.2500  0.1503  0.1575  1
]