The crystal structure described by Cs2CO3 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to two equivalent O(2), three equivalent O(1), and three equivalent O(3) atoms. In the second Cs site, Cs(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted face-sharing CsO6 octahedra. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Cs(2), three equivalent Cs(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Cs(2), three equivalent Cs(1), and one C(1) atom. is represented by the CIF card [CIF]
data_Cs2CO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.399
_cell_length_b   6.166
_cell_length_c   7.989
_cell_angle_alpha   82.981
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   508.447
_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  0.917  0.242  0.818  1.0
  Cs  Cs1  1  0.417  0.758  0.682  1.0
  Cs  Cs2  1  0.083  0.758  0.182  1.0
  Cs  Cs3  1  0.583  0.242  0.318  1.0
  Cs  Cs4  1  0.284  0.262  0.977  1.0
  Cs  Cs5  1  0.784  0.738  0.523  1.0
  Cs  Cs6  1  0.716  0.738  0.023  1.0
  Cs  Cs7  1  0.216  0.262  0.477  1.0
  C  C8  1  0.580  0.246  0.737  1.0
  C  C9  1  0.920  0.246  0.237  1.0
  C  C10  1  0.420  0.754  0.263  1.0
  C  C11  1  0.080  0.754  0.763  1.0
  O  O12  1  0.850  0.077  0.215  1.0
  O  O13  1  0.350  0.923  0.285  1.0
  O  O14  1  0.150  0.923  0.785  1.0
  O  O15  1  0.650  0.077  0.715  1.0
  O  O16  1  0.874  0.402  0.314  1.0
  O  O17  1  0.626  0.402  0.814  1.0
  O  O18  1  0.126  0.598  0.686  1.0
  O  O19  1  0.374  0.598  0.186  1.0
  O  O20  1  0.464  0.258  0.677  1.0
  O  O21  1  0.964  0.742  0.823  1.0
  O  O22  1  0.536  0.742  0.323  1.0
  O  O23  1  0.036  0.258  0.177  1.0
[/CIF]
.
The crystal structure described by Cs2CO3 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to two equivalent O(2), three equivalent O(1), and three equivalent O(3) atoms. In the second Cs site, Cs(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted face-sharing CsO6 octahedra. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Cs(2), three equivalent Cs(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Cs(2), three equivalent Cs(1), and one C(1) atom. is represented by the CIF card [CIF]
data_Cs2CO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.399
_cell_length_b   6.166
_cell_length_c   7.989
_cell_angle_alpha   82.981
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   508.447
_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  0.917  0.242  0.818  1.0
  Cs  Cs1  1  0.417  0.758  0.682  1.0
  Cs  Cs2  1  0.083  0.758  0.182  1.0
  Cs  Cs3  1  0.583  0.242  0.318  1.0
  Cs  Cs4  1  0.284  0.262  0.977  1.0
  Cs  Cs5  1  0.784  0.738  0.523  1.0
  Cs  Cs6  1  0.716  0.738  0.023  1.0
  Cs  Cs7  1  0.216  0.262  0.477  1.0
  C  C8  1  0.580  0.246  0.737  1.0
  C  C9  1  0.920  0.246  0.237  1.0
  C  C10  1  0.420  0.754  0.263  1.0
  C  C11  1  0.080  0.754  0.763  1.0
  O  O12  1  0.850  0.077  0.215  1.0
  O  O13  1  0.350  0.923  0.285  1.0
  O  O14  1  0.150  0.923  0.785  1.0
  O  O15  1  0.650  0.077  0.715  1.0
  O  O16  1  0.874  0.402  0.314  1.0
  O  O17  1  0.626  0.402  0.814  1.0
  O  O18  1  0.126  0.598  0.686  1.0
  O  O19  1  0.374  0.598  0.186  1.0
  O  O20  1  0.464  0.258  0.677  1.0
  O  O21  1  0.964  0.742  0.823  1.0
  O  O22  1  0.536  0.742  0.323  1.0
  O  O23  1  0.036  0.258  0.177  1.0
[/CIF]
.