The crystal structure described by Rb2CuAlF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent F(1) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Cu(1)F6 octahedra, and faces with four equivalent Al(1)F6 octahedra. Cu(1) is bonded to six equivalent F(1) atoms to form CuF6 octahedra that share corners with six equivalent Al(1)F6 octahedra and faces with eight equivalent Rb(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 Cu(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a 6-coordinate geometry to four equivalent Rb(1), one Cu(1), and one Al(1) atom. is represented by the CIF card [CIF]
data_Rb2AlCuF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.922
_cell_length_b   5.922
_cell_length_c   5.922
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   146.825
_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
  Rb  Rb0  1  0.750  0.750  0.750  1.0
  Rb  Rb1  1  0.250  0.250  0.250  1.0
  Al  Al2  1  0.000  0.000  0.000  1.0
  Cu  Cu3  1  0.500  0.500  0.500  1.0
  F  F4  1  0.779  0.221  0.221  1.0
  F  F5  1  0.221  0.221  0.779  1.0
  F  F6  1  0.221  0.779  0.779  1.0
  F  F7  1  0.221  0.779  0.221  1.0
  F  F8  1  0.779  0.221  0.779  1.0
  F  F9  1  0.779  0.779  0.221  1.0
[/CIF]
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The crystal structure described by Rb2CuAlF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent F(1) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Cu(1)F6 octahedra, and faces with four equivalent Al(1)F6 octahedra. Cu(1) is bonded to six equivalent F(1) atoms to form CuF6 octahedra that share corners with six equivalent Al(1)F6 octahedra and faces with eight equivalent Rb(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 Cu(1)F6 octahedra and faces with eight equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a 6-coordinate geometry to four equivalent Rb(1), one Cu(1), and one Al(1) atom. is represented by the CIF card [CIF]
data_Rb2AlCuF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.922
_cell_length_b   5.922
_cell_length_c   5.922
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   146.825
_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
  Rb  Rb0  1  0.750  0.750  0.750  1.0
  Rb  Rb1  1  0.250  0.250  0.250  1.0
  Al  Al2  1  0.000  0.000  0.000  1.0
  Cu  Cu3  1  0.500  0.500  0.500  1.0
  F  F4  1  0.779  0.221  0.221  1.0
  F  F5  1  0.221  0.221  0.779  1.0
  F  F6  1  0.221  0.779  0.779  1.0
  F  F7  1  0.221  0.779  0.221  1.0
  F  F8  1  0.779  0.221  0.779  1.0
  F  F9  1  0.779  0.779  0.221  1.0
[/CIF]
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