data_[K4Si2H10F2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Si  1.9000  1.1000  0.5400
  H  2.2000  0.2500  0.0000
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [5.5714]
_cell_length_b [5.5714]
_cell_length_c [8.1197]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [K2SiH5F]
_chemical_formula_sum '[K4 Si2 H10 F2]'
_cell_volume [252.0442]
_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  0.5000  0.2450  1.0
  Si  Si1  2  0.0000  0.0000  0.0078  1.0
  H  H2  8  0.2025  0.2025  0.0038  1.0
  H  H3  2  0.0000  0.0000  0.2035  1.0
  F  F4  2  0.0000  0.0000  0.7834  1.0
]