The crystal structure described by (KF4)2F2 crystallizes in the tetragonal I4_1/a space group. The structure consists of four hydrofluoric acid atoms inside a KF4 framework. In the KF4 framework, K(1) is bonded in a 8-coordinate geometry to eight equivalent F(2) atoms. F(2) is bonded in a water-like geometry to two equivalent K(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.897
_cell_length_b   7.897
_cell_length_c   7.897
_cell_angle_alpha   139.444
_cell_angle_beta   139.444
_cell_angle_gamma   58.698
_symmetry_Int_Tables_number   1
_cell_volume   206.236
_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  1  0.250  0.750  0.500  1.0
  K  K1  1  0.500  0.500  0.000  1.0
  F  F2  1  0.750  0.250  0.500  1.0
  F  F3  1  0.000  0.000  0.000  1.0
  F  F4  1  0.138  0.067  0.394  1.0
  F  F5  1  0.673  0.744  0.606  1.0
  F  F6  1  0.494  0.388  0.571  1.0
  F  F7  1  0.817  0.923  0.429  1.0
  F  F8  1  0.612  0.183  0.106  1.0
  F  F9  1  0.077  0.506  0.894  1.0
  F  F10  1  0.256  0.862  0.929  1.0
  F  F11  1  0.933  0.327  0.071  1.0
[/CIF]
.
The crystal structure described by (KF4)2F2 crystallizes in the tetragonal I4_1/a space group. The structure consists of four hydrofluoric acid atoms inside a KF4 framework. In the KF4 framework, K(1) is bonded in a 8-coordinate geometry to eight equivalent F(2) atoms. F(2) is bonded in a water-like geometry to two equivalent K(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.897
_cell_length_b   7.897
_cell_length_c   7.897
_cell_angle_alpha   139.444
_cell_angle_beta   139.444
_cell_angle_gamma   58.698
_symmetry_Int_Tables_number   1
_cell_volume   206.236
_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  1  0.250  0.750  0.500  1.0
  K  K1  1  0.500  0.500  0.000  1.0
  F  F2  1  0.750  0.250  0.500  1.0
  F  F3  1  0.000  0.000  0.000  1.0
  F  F4  1  0.138  0.067  0.394  1.0
  F  F5  1  0.673  0.744  0.606  1.0
  F  F6  1  0.494  0.388  0.571  1.0
  F  F7  1  0.817  0.923  0.429  1.0
  F  F8  1  0.612  0.183  0.106  1.0
  F  F9  1  0.077  0.506  0.894  1.0
  F  F10  1  0.256  0.862  0.929  1.0
  F  F11  1  0.933  0.327  0.071  1.0
[/CIF]
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