The structure described by Cs2RbAlF6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent F(1) atoms to form CsF12 cuboctahedra that share corners with twelve equivalent Cs(1)F12 cuboctahedra, faces with six equivalent Cs(1)F12 cuboctahedra, faces with four equivalent Rb(1)F6 octahedra, and faces with four equivalent Al(1)F6 octahedra. Rb(1) is bonded to six equivalent F(1) atoms to form RbF6 octahedra that share corners with six equivalent Al(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Al(1) is bonded to six equivalent F(1) atoms to form AlF6 octahedra that share corners with six equivalent Rb(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a 2-coordinate geometry to four equivalent Cs(1), one Rb(1), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2RbAlF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.980
_cell_length_b   5.980
_cell_length_c   5.980
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   151.243
_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
  Cs  Cs0  1  0.250  0.250  0.250  1.0
  Cs  Cs1  1  0.750  0.750  0.750  1.0
  Rb  Rb2  1  0.500  0.500  0.500  1.0
  Al  Al3  1  0.000  0.000  0.000  1.0
  F  F4  1  0.210  0.790  0.210  1.0
  F  F5  1  0.790  0.790  0.210  1.0
  F  F6  1  0.790  0.210  0.790  1.0
  F  F7  1  0.790  0.210  0.210  1.0
  F  F8  1  0.210  0.790  0.790  1.0
  F  F9  1  0.210  0.210  0.790  1.0
[/CIF]
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The structure described by Cs2RbAlF6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent F(1) atoms to form CsF12 cuboctahedra that share corners with twelve equivalent Cs(1)F12 cuboctahedra, faces with six equivalent Cs(1)F12 cuboctahedra, faces with four equivalent Rb(1)F6 octahedra, and faces with four equivalent Al(1)F6 octahedra. Rb(1) is bonded to six equivalent F(1) atoms to form RbF6 octahedra that share corners with six equivalent Al(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Al(1) is bonded to six equivalent F(1) atoms to form AlF6 octahedra that share corners with six equivalent Rb(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a 2-coordinate geometry to four equivalent Cs(1), one Rb(1), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2RbAlF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.980
_cell_length_b   5.980
_cell_length_c   5.980
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   151.243
_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
  Cs  Cs0  1  0.250  0.250  0.250  1.0
  Cs  Cs1  1  0.750  0.750  0.750  1.0
  Rb  Rb2  1  0.500  0.500  0.500  1.0
  Al  Al3  1  0.000  0.000  0.000  1.0
  F  F4  1  0.210  0.790  0.210  1.0
  F  F5  1  0.790  0.790  0.210  1.0
  F  F6  1  0.790  0.210  0.790  1.0
  F  F7  1  0.790  0.210  0.210  1.0
  F  F8  1  0.210  0.790  0.790  1.0
  F  F9  1  0.210  0.210  0.790  1.0
[/CIF]
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