The crystal structure described by RbK2CrF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to six equivalent F(1) atoms to form RbF6 octahedra that share corners with six equivalent Cr(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. K(1) is bonded to twelve equivalent F(1) atoms to form distorted KF12 cuboctahedra that share corners with twelve equivalent K(1)F12 cuboctahedra, faces with six equivalent K(1)F12 cuboctahedra, faces with four equivalent Rb(1)F6 octahedra, and faces with four equivalent Cr(1)F6 octahedra. Cr(1) is bonded to six equivalent F(1) atoms to form CrF6 octahedra that share corners with six equivalent Rb(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a distorted linear geometry to one Rb(1), four equivalent K(1), and one Cr(1) atom. is represented by the CIF card [CIF]
data_K2RbCrF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.447
_cell_length_b   6.447
_cell_length_c   6.447
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   189.509
_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  0.250  0.250  0.250  1.0
  K  K1  1  0.750  0.750  0.750  1.0
  Rb  Rb2  1  0.500  0.500  0.500  1.0
  Cr  Cr3  1  0.000  0.000  0.000  1.0
  F  F4  1  0.212  0.788  0.212  1.0
  F  F5  1  0.788  0.788  0.212  1.0
  F  F6  1  0.788  0.212  0.788  1.0
  F  F7  1  0.788  0.212  0.212  1.0
  F  F8  1  0.212  0.788  0.788  1.0
  F  F9  1  0.212  0.212  0.788  1.0
[/CIF]
.
The crystal structure described by RbK2CrF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to six equivalent F(1) atoms to form RbF6 octahedra that share corners with six equivalent Cr(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. K(1) is bonded to twelve equivalent F(1) atoms to form distorted KF12 cuboctahedra that share corners with twelve equivalent K(1)F12 cuboctahedra, faces with six equivalent K(1)F12 cuboctahedra, faces with four equivalent Rb(1)F6 octahedra, and faces with four equivalent Cr(1)F6 octahedra. Cr(1) is bonded to six equivalent F(1) atoms to form CrF6 octahedra that share corners with six equivalent Rb(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a distorted linear geometry to one Rb(1), four equivalent K(1), and one Cr(1) atom. is represented by the CIF card [CIF]
data_K2RbCrF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.447
_cell_length_b   6.447
_cell_length_c   6.447
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   189.509
_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  0.250  0.250  0.250  1.0
  K  K1  1  0.750  0.750  0.750  1.0
  Rb  Rb2  1  0.500  0.500  0.500  1.0
  Cr  Cr3  1  0.000  0.000  0.000  1.0
  F  F4  1  0.212  0.788  0.212  1.0
  F  F5  1  0.788  0.788  0.212  1.0
  F  F6  1  0.788  0.212  0.788  1.0
  F  F7  1  0.788  0.212  0.212  1.0
  F  F8  1  0.212  0.788  0.788  1.0
  F  F9  1  0.212  0.212  0.788  1.0
[/CIF]
.