The material structure described by Rb2TlAlI6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form distorted RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, faces with four equivalent Tl(1)I6 octahedra, and faces with four equivalent Al(1)I6 octahedra. Tl(1) is bonded to six equivalent I(1) atoms to form TlI6 octahedra that share corners with six equivalent Al(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. Al(1) is bonded to six equivalent I(1) atoms to form AlI6 octahedra that share corners with six equivalent Tl(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. I(1) is bonded in a distorted linear geometry to four equivalent Rb(1), one Tl(1), and one Al(1) atom. is represented by the CIF file [CIF]
data_Rb2AlTlI6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.661
_cell_length_b   8.661
_cell_length_c   8.661
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   459.324
_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
  Tl  Tl3  1  0.500  0.500  0.500  1.0
  I  I4  1  0.773  0.227  0.227  1.0
  I  I5  1  0.227  0.227  0.773  1.0
  I  I6  1  0.227  0.773  0.773  1.0
  I  I7  1  0.227  0.773  0.227  1.0
  I  I8  1  0.773  0.227  0.773  1.0
  I  I9  1  0.773  0.773  0.227  1.0
[/CIF]
.
The material structure described by Rb2TlAlI6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form distorted RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, faces with four equivalent Tl(1)I6 octahedra, and faces with four equivalent Al(1)I6 octahedra. Tl(1) is bonded to six equivalent I(1) atoms to form TlI6 octahedra that share corners with six equivalent Al(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. Al(1) is bonded to six equivalent I(1) atoms to form AlI6 octahedra that share corners with six equivalent Tl(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. I(1) is bonded in a distorted linear geometry to four equivalent Rb(1), one Tl(1), and one Al(1) atom. is represented by the CIF file [CIF]
data_Rb2AlTlI6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.661
_cell_length_b   8.661
_cell_length_c   8.661
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   459.324
_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
  Tl  Tl3  1  0.500  0.500  0.500  1.0
  I  I4  1  0.773  0.227  0.227  1.0
  I  I5  1  0.227  0.227  0.773  1.0
  I  I6  1  0.227  0.773  0.773  1.0
  I  I7  1  0.227  0.773  0.227  1.0
  I  I8  1  0.773  0.227  0.773  1.0
  I  I9  1  0.773  0.773  0.227  1.0
[/CIF]
.