The structure described by Cs3OI crystallizes in the hexagonal P6_3/mmc space group. Cs(1) is bonded in a 2-coordinate geometry to two equivalent O(1) and four equivalent I(1) atoms. O(1) is bonded to six equivalent Cs(1) atoms to form OCs6 octahedra that share corners with six equivalent I(1)Cs12 cuboctahedra, faces with six equivalent I(1)Cs12 cuboctahedra, and faces with two equivalent O(1)Cs6 octahedra. I(1) is bonded to twelve equivalent Cs(1) atoms to form ICs12 cuboctahedra that share corners with six equivalent I(1)Cs12 cuboctahedra, corners with six equivalent O(1)Cs6 octahedra, faces with eight equivalent I(1)Cs12 cuboctahedra, and faces with six equivalent O(1)Cs6 octahedra. The corner-sharing octahedral tilt angles are 16°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs3IO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.115
_cell_length_b   8.115
_cell_length_c   7.207
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   411.082
_cell_formula_units_Z   2
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  0.155  0.311  0.250  1.0
  Cs  Cs1  1  0.845  0.689  0.750  1.0
  Cs  Cs2  1  0.689  0.845  0.250  1.0
  Cs  Cs3  1  0.311  0.155  0.750  1.0
  Cs  Cs4  1  0.155  0.845  0.250  1.0
  Cs  Cs5  1  0.845  0.155  0.750  1.0
  I  I6  1  0.333  0.667  0.750  1.0
  I  I7  1  0.667  0.333  0.250  1.0
  O  O8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.000  0.000  0.500  1.0
[/CIF]
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The structure described by Cs3OI crystallizes in the hexagonal P6_3/mmc space group. Cs(1) is bonded in a 2-coordinate geometry to two equivalent O(1) and four equivalent I(1) atoms. O(1) is bonded to six equivalent Cs(1) atoms to form OCs6 octahedra that share corners with six equivalent I(1)Cs12 cuboctahedra, faces with six equivalent I(1)Cs12 cuboctahedra, and faces with two equivalent O(1)Cs6 octahedra. I(1) is bonded to twelve equivalent Cs(1) atoms to form ICs12 cuboctahedra that share corners with six equivalent I(1)Cs12 cuboctahedra, corners with six equivalent O(1)Cs6 octahedra, faces with eight equivalent I(1)Cs12 cuboctahedra, and faces with six equivalent O(1)Cs6 octahedra. The corner-sharing octahedral tilt angles are 16°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs3IO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.115
_cell_length_b   8.115
_cell_length_c   7.207
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   411.082
_cell_formula_units_Z   2
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  0.155  0.311  0.250  1.0
  Cs  Cs1  1  0.845  0.689  0.750  1.0
  Cs  Cs2  1  0.689  0.845  0.250  1.0
  Cs  Cs3  1  0.311  0.155  0.750  1.0
  Cs  Cs4  1  0.155  0.845  0.250  1.0
  Cs  Cs5  1  0.845  0.155  0.750  1.0
  I  I6  1  0.333  0.667  0.750  1.0
  I  I7  1  0.667  0.333  0.250  1.0
  O  O8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.000  0.000  0.500  1.0
[/CIF]
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