The compound described by Cs2Ba2O3 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a distorted trigonal planar geometry to one O(2) and two equivalent O(1) atoms. Ba(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of edge and corner-sharing BaO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Cs(1) and two equivalent Ba(1) atoms to form corner-sharing OCs4Ba2 octahedra. The corner-sharing octahedral tilt angles are 61°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Cs(1) and three equivalent Ba(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2Ba2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.870
_cell_length_b   7.678
_cell_length_c   7.711
_cell_angle_alpha   62.483
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   413.244
_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  0.351  0.077  0.176  1.0
  Cs  Cs1  1  0.149  0.577  0.176  1.0
  Cs  Cs2  1  0.851  0.423  0.824  1.0
  Cs  Cs3  1  0.649  0.923  0.824  1.0
  Ba  Ba4  1  0.626  0.438  0.328  1.0
  Ba  Ba5  1  0.126  0.062  0.672  1.0
  Ba  Ba6  1  0.874  0.938  0.328  1.0
  Ba  Ba7  1  0.374  0.562  0.672  1.0
  O  O8  1  0.500  0.500  0.000  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.911  0.248  0.391  1.0
  O  O11  1  0.411  0.252  0.609  1.0
  O  O12  1  0.589  0.748  0.391  1.0
  O  O13  1  0.089  0.752  0.609  1.0
[/CIF]
.
The compound described by Cs2Ba2O3 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a distorted trigonal planar geometry to one O(2) and two equivalent O(1) atoms. Ba(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of edge and corner-sharing BaO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Cs(1) and two equivalent Ba(1) atoms to form corner-sharing OCs4Ba2 octahedra. The corner-sharing octahedral tilt angles are 61°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Cs(1) and three equivalent Ba(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2Ba2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.870
_cell_length_b   7.678
_cell_length_c   7.711
_cell_angle_alpha   62.483
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   413.244
_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  0.351  0.077  0.176  1.0
  Cs  Cs1  1  0.149  0.577  0.176  1.0
  Cs  Cs2  1  0.851  0.423  0.824  1.0
  Cs  Cs3  1  0.649  0.923  0.824  1.0
  Ba  Ba4  1  0.626  0.438  0.328  1.0
  Ba  Ba5  1  0.126  0.062  0.672  1.0
  Ba  Ba6  1  0.874  0.938  0.328  1.0
  Ba  Ba7  1  0.374  0.562  0.672  1.0
  O  O8  1  0.500  0.500  0.000  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.911  0.248  0.391  1.0
  O  O11  1  0.411  0.252  0.609  1.0
  O  O12  1  0.589  0.748  0.391  1.0
  O  O13  1  0.089  0.752  0.609  1.0
[/CIF]
.