The structure described by CsO3 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 9-coordinate geometry to one O(1), four equivalent O(2), and four equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Cs(1) and one O(1) atom. In the second O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one O(2), and one O(3) atom. In the third O site, O(3) is bonded to four equivalent Cs(1) and one O(1) atom to form a mixture of distorted edge and corner-sharing OCs4O trigonal bipyramids. is represented by the CIF card [CIF]
data_CsO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.490
_cell_length_b   6.901
_cell_length_c   8.143
_cell_angle_alpha   75.552
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   353.162
_cell_formula_units_Z   4
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  0.746  0.352  0.415  1.0
  Cs  Cs1  1  0.246  0.148  0.085  1.0
  Cs  Cs2  1  0.254  0.648  0.585  1.0
  Cs  Cs3  1  0.754  0.852  0.915  1.0
  O  O4  1  0.279  0.613  0.122  1.0
  O  O5  1  0.779  0.887  0.378  1.0
  O  O6  1  0.721  0.387  0.878  1.0
  O  O7  1  0.221  0.113  0.622  1.0
  O  O8  1  0.249  0.218  0.457  1.0
  O  O9  1  0.749  0.282  0.043  1.0
  O  O10  1  0.751  0.782  0.543  1.0
  O  O11  1  0.251  0.718  0.957  1.0
  O  O12  1  0.423  0.694  0.208  1.0
  O  O13  1  0.923  0.806  0.292  1.0
  O  O14  1  0.577  0.306  0.792  1.0
  O  O15  1  0.077  0.194  0.708  1.0
[/CIF]
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The structure described by CsO3 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 9-coordinate geometry to one O(1), four equivalent O(2), and four equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Cs(1) and one O(1) atom. In the second O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one O(2), and one O(3) atom. In the third O site, O(3) is bonded to four equivalent Cs(1) and one O(1) atom to form a mixture of distorted edge and corner-sharing OCs4O trigonal bipyramids. is represented by the CIF card [CIF]
data_CsO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.490
_cell_length_b   6.901
_cell_length_c   8.143
_cell_angle_alpha   75.552
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   353.162
_cell_formula_units_Z   4
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  0.746  0.352  0.415  1.0
  Cs  Cs1  1  0.246  0.148  0.085  1.0
  Cs  Cs2  1  0.254  0.648  0.585  1.0
  Cs  Cs3  1  0.754  0.852  0.915  1.0
  O  O4  1  0.279  0.613  0.122  1.0
  O  O5  1  0.779  0.887  0.378  1.0
  O  O6  1  0.721  0.387  0.878  1.0
  O  O7  1  0.221  0.113  0.622  1.0
  O  O8  1  0.249  0.218  0.457  1.0
  O  O9  1  0.749  0.282  0.043  1.0
  O  O10  1  0.751  0.782  0.543  1.0
  O  O11  1  0.251  0.718  0.957  1.0
  O  O12  1  0.423  0.694  0.208  1.0
  O  O13  1  0.923  0.806  0.292  1.0
  O  O14  1  0.577  0.306  0.792  1.0
  O  O15  1  0.077  0.194  0.708  1.0
[/CIF]
.