The compound described by Rb2SnI6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, and faces with four equivalent Sn(1)I6 octahedra. Sn(1) is bonded to six equivalent I(1) atoms to form SnI6 octahedra that share faces with eight equivalent Rb(1)I12 cuboctahedra. I(1) is bonded to four equivalent Rb(1) and one Sn(1) atom to form a mixture of distorted corner, edge, and face-sharing IRb4Sn square pyramids. is represented by the CIF card [CIF]
data_Rb2SnI6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.272
_cell_length_b   8.272
_cell_length_c   8.272
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   400.276
_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  0.250  0.250  0.250  1.0
  Rb  Rb1  1  0.750  0.750  0.750  1.0
  Sn  Sn2  1  0.000  0.000  0.000  1.0
  I  I3  1  0.246  0.246  0.754  1.0
  I  I4  1  0.246  0.754  0.754  1.0
  I  I5  1  0.754  0.246  0.246  1.0
  I  I6  1  0.246  0.754  0.246  1.0
  I  I7  1  0.754  0.246  0.754  1.0
  I  I8  1  0.754  0.754  0.246  1.0
[/CIF]
.
The compound described by Rb2SnI6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, and faces with four equivalent Sn(1)I6 octahedra. Sn(1) is bonded to six equivalent I(1) atoms to form SnI6 octahedra that share faces with eight equivalent Rb(1)I12 cuboctahedra. I(1) is bonded to four equivalent Rb(1) and one Sn(1) atom to form a mixture of distorted corner, edge, and face-sharing IRb4Sn square pyramids. is represented by the CIF card [CIF]
data_Rb2SnI6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.272
_cell_length_b   8.272
_cell_length_c   8.272
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   400.276
_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  0.250  0.250  0.250  1.0
  Rb  Rb1  1  0.750  0.750  0.750  1.0
  Sn  Sn2  1  0.000  0.000  0.000  1.0
  I  I3  1  0.246  0.246  0.754  1.0
  I  I4  1  0.246  0.754  0.754  1.0
  I  I5  1  0.754  0.246  0.246  1.0
  I  I6  1  0.246  0.754  0.246  1.0
  I  I7  1  0.754  0.246  0.754  1.0
  I  I8  1  0.754  0.754  0.246  1.0
[/CIF]
.