The crystal structure described by Cs2SnI6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent I(1) atoms to form CsI12 cuboctahedra that share corners with twelve equivalent Cs(1)I12 cuboctahedra, faces with six equivalent Cs(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 Cs(1)I12 cuboctahedra. I(1) is bonded to four equivalent Cs(1) and one Sn(1) atom to form a mixture of distorted edge, face, and corner-sharing ICs4Sn square pyramids. is represented by the CIF file [CIF]
data_Cs2SnI6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.329
_cell_length_b   8.329
_cell_length_c   8.329
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   408.620
_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
  Sn  Sn2  1  0.000  0.000  0.000  1.0
  I  I3  1  0.755  0.755  0.245  1.0
  I  I4  1  0.245  0.755  0.755  1.0
  I  I5  1  0.755  0.245  0.245  1.0
  I  I6  1  0.245  0.245  0.755  1.0
  I  I7  1  0.755  0.245  0.755  1.0
  I  I8  1  0.245  0.755  0.245  1.0
[/CIF]
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The crystal structure described by Cs2SnI6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent I(1) atoms to form CsI12 cuboctahedra that share corners with twelve equivalent Cs(1)I12 cuboctahedra, faces with six equivalent Cs(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 Cs(1)I12 cuboctahedra. I(1) is bonded to four equivalent Cs(1) and one Sn(1) atom to form a mixture of distorted edge, face, and corner-sharing ICs4Sn square pyramids. is represented by the CIF file [CIF]
data_Cs2SnI6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.329
_cell_length_b   8.329
_cell_length_c   8.329
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   408.620
_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
  Sn  Sn2  1  0.000  0.000  0.000  1.0
  I  I3  1  0.755  0.755  0.245  1.0
  I  I4  1  0.245  0.755  0.755  1.0
  I  I5  1  0.755  0.245  0.245  1.0
  I  I6  1  0.245  0.245  0.755  1.0
  I  I7  1  0.755  0.245  0.755  1.0
  I  I8  1  0.245  0.755  0.245  1.0
[/CIF]
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