The structure described by Cs2PbO3 crystallizes in the orthorhombic Cmc2_1 space group. Cs(1) is bonded in a 7-coordinate geometry to three equivalent O(1) and four equivalent O(2) atoms. Pb(1) is bonded to one O(1) and four equivalent O(2) atoms to form distorted edge-sharing PbO5 trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to six equivalent Cs(1) and one Pb(1) atom. In the second O site, O(2) is bonded to four equivalent Cs(1) and two equivalent Pb(1) atoms to form a mixture of distorted edge, face, and corner-sharing OCs4Pb2 octahedra. The corner-sharing octahedral tilt angles range from 37-49°. is represented by the CIF card [CIF]
data_Cs2PbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.099
_cell_length_b   6.913
_cell_length_c   6.913
_cell_angle_alpha   110.724
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   272.595
_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  0.244  0.484  0.809  1.0
  Cs  Cs1  1  0.744  0.191  0.516  1.0
  Cs  Cs2  1  0.744  0.516  0.191  1.0
  Cs  Cs3  1  0.244  0.809  0.484  1.0
  Pb  Pb4  1  0.735  0.911  0.911  1.0
  Pb  Pb5  1  0.235  0.089  0.089  1.0
  O  O6  1  0.718  0.651  0.651  1.0
  O  O7  1  0.218  0.349  0.349  1.0
  O  O8  1  0.988  0.871  0.120  1.0
  O  O9  1  0.488  0.129  0.880  1.0
  O  O10  1  0.988  0.120  0.871  1.0
  O  O11  1  0.488  0.880  0.129  1.0
[/CIF]
.
The structure described by Cs2PbO3 crystallizes in the orthorhombic Cmc2_1 space group. Cs(1) is bonded in a 7-coordinate geometry to three equivalent O(1) and four equivalent O(2) atoms. Pb(1) is bonded to one O(1) and four equivalent O(2) atoms to form distorted edge-sharing PbO5 trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to six equivalent Cs(1) and one Pb(1) atom. In the second O site, O(2) is bonded to four equivalent Cs(1) and two equivalent Pb(1) atoms to form a mixture of distorted edge, face, and corner-sharing OCs4Pb2 octahedra. The corner-sharing octahedral tilt angles range from 37-49°. is represented by the CIF card [CIF]
data_Cs2PbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.099
_cell_length_b   6.913
_cell_length_c   6.913
_cell_angle_alpha   110.724
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   272.595
_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  0.244  0.484  0.809  1.0
  Cs  Cs1  1  0.744  0.191  0.516  1.0
  Cs  Cs2  1  0.744  0.516  0.191  1.0
  Cs  Cs3  1  0.244  0.809  0.484  1.0
  Pb  Pb4  1  0.735  0.911  0.911  1.0
  Pb  Pb5  1  0.235  0.089  0.089  1.0
  O  O6  1  0.718  0.651  0.651  1.0
  O  O7  1  0.218  0.349  0.349  1.0
  O  O8  1  0.988  0.871  0.120  1.0
  O  O9  1  0.488  0.129  0.880  1.0
  O  O10  1  0.988  0.120  0.871  1.0
  O  O11  1  0.488  0.880  0.129  1.0
[/CIF]
.