The material structure described by KAsF6 crystallizes in the trigonal R-3m space group. K(1) is bonded to twelve equivalent F(1) atoms to form KF12 cuboctahedra that share corners with six equivalent As(1)F6 octahedra, edges with six equivalent K(1)F12 cuboctahedra, and faces with two equivalent As(1)F6 octahedra. The corner-sharing octahedral tilt angles are 32°. As(1) is bonded to six equivalent F(1) atoms to form AsF6 octahedra that share corners with six equivalent K(1)F12 cuboctahedra and faces with two equivalent K(1)F12 cuboctahedra. F(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one As(1) atom. is represented by the CIF card [CIF]
data_KAsF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.857
_cell_length_b   4.857
_cell_length_c   4.857
_cell_angle_alpha   98.102
_cell_angle_beta   98.102
_cell_angle_gamma   98.102
_symmetry_Int_Tables_number   1
_cell_volume   110.814
_cell_formula_units_Z   1
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  0.500  0.500  0.500  1.0
  As  As1  1  0.000  0.000  0.000  1.0
  F  F2  1  0.746  0.079  0.746  1.0
  F  F3  1  0.079  0.746  0.746  1.0
  F  F4  1  0.254  0.254  0.921  1.0
  F  F5  1  0.921  0.254  0.254  1.0
  F  F6  1  0.254  0.921  0.254  1.0
  F  F7  1  0.746  0.746  0.079  1.0
[/CIF]
.
The material structure described by KAsF6 crystallizes in the trigonal R-3m space group. K(1) is bonded to twelve equivalent F(1) atoms to form KF12 cuboctahedra that share corners with six equivalent As(1)F6 octahedra, edges with six equivalent K(1)F12 cuboctahedra, and faces with two equivalent As(1)F6 octahedra. The corner-sharing octahedral tilt angles are 32°. As(1) is bonded to six equivalent F(1) atoms to form AsF6 octahedra that share corners with six equivalent K(1)F12 cuboctahedra and faces with two equivalent K(1)F12 cuboctahedra. F(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one As(1) atom. is represented by the CIF card [CIF]
data_KAsF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.857
_cell_length_b   4.857
_cell_length_c   4.857
_cell_angle_alpha   98.102
_cell_angle_beta   98.102
_cell_angle_gamma   98.102
_symmetry_Int_Tables_number   1
_cell_volume   110.814
_cell_formula_units_Z   1
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  0.500  0.500  0.500  1.0
  As  As1  1  0.000  0.000  0.000  1.0
  F  F2  1  0.746  0.079  0.746  1.0
  F  F3  1  0.079  0.746  0.746  1.0
  F  F4  1  0.254  0.254  0.921  1.0
  F  F5  1  0.921  0.254  0.254  1.0
  F  F6  1  0.254  0.921  0.254  1.0
  F  F7  1  0.746  0.746  0.079  1.0
[/CIF]
.