The structure described by Cs2C2H2O5 crystallizes in the monoclinic C2/c space group. Cs(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), and four equivalent O(3) atoms. C(1) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(3) atom. H(1) is bonded in a single-bond geometry to one O(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Cs(1) and two equivalent H(1) atoms. In the second O site, O(2) is bonded in a single-bond geometry to two equivalent Cs(1) and one C(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Cs(1) and one C(1) atom. is represented by the CIF file [CIF]
data_Cs2H2C2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.145
_cell_length_b   6.145
_cell_length_c   11.484
_cell_angle_alpha   76.210
_cell_angle_beta   76.210
_cell_angle_gamma   67.079
_symmetry_Int_Tables_number   1
_cell_volume   382.687
_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  0.320  0.933  0.874  1.0
  Cs  Cs1  1  0.067  0.680  0.626  1.0
  Cs  Cs2  1  0.680  0.067  0.126  1.0
  Cs  Cs3  1  0.933  0.320  0.374  1.0
  H  H4  1  0.682  0.407  0.797  1.0
  H  H5  1  0.593  0.318  0.703  1.0
  H  H6  1  0.318  0.593  0.203  1.0
  H  H7  1  0.407  0.682  0.297  1.0
  C  C8  1  0.924  0.554  0.946  1.0
  C  C9  1  0.446  0.076  0.554  1.0
  C  C10  1  0.076  0.446  0.054  1.0
  C  C11  1  0.554  0.924  0.446  1.0
  O  O12  1  0.552  0.448  0.750  1.0
  O  O13  1  0.448  0.552  0.250  1.0
  O  O14  1  0.870  0.408  0.907  1.0
  O  O15  1  0.592  0.130  0.593  1.0
  O  O16  1  0.130  0.592  0.093  1.0
  O  O17  1  0.408  0.870  0.407  1.0
  O  O18  1  0.870  0.777  0.906  1.0
  O  O19  1  0.223  0.130  0.594  1.0
  O  O20  1  0.130  0.223  0.094  1.0
  O  O21  1  0.777  0.870  0.406  1.0
[/CIF]
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The structure described by Cs2C2H2O5 crystallizes in the monoclinic C2/c space group. Cs(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), and four equivalent O(3) atoms. C(1) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(3) atom. H(1) is bonded in a single-bond geometry to one O(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Cs(1) and two equivalent H(1) atoms. In the second O site, O(2) is bonded in a single-bond geometry to two equivalent Cs(1) and one C(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to four equivalent Cs(1) and one C(1) atom. is represented by the CIF file [CIF]
data_Cs2H2C2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.145
_cell_length_b   6.145
_cell_length_c   11.484
_cell_angle_alpha   76.210
_cell_angle_beta   76.210
_cell_angle_gamma   67.079
_symmetry_Int_Tables_number   1
_cell_volume   382.687
_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  0.320  0.933  0.874  1.0
  Cs  Cs1  1  0.067  0.680  0.626  1.0
  Cs  Cs2  1  0.680  0.067  0.126  1.0
  Cs  Cs3  1  0.933  0.320  0.374  1.0
  H  H4  1  0.682  0.407  0.797  1.0
  H  H5  1  0.593  0.318  0.703  1.0
  H  H6  1  0.318  0.593  0.203  1.0
  H  H7  1  0.407  0.682  0.297  1.0
  C  C8  1  0.924  0.554  0.946  1.0
  C  C9  1  0.446  0.076  0.554  1.0
  C  C10  1  0.076  0.446  0.054  1.0
  C  C11  1  0.554  0.924  0.446  1.0
  O  O12  1  0.552  0.448  0.750  1.0
  O  O13  1  0.448  0.552  0.250  1.0
  O  O14  1  0.870  0.408  0.907  1.0
  O  O15  1  0.592  0.130  0.593  1.0
  O  O16  1  0.130  0.592  0.093  1.0
  O  O17  1  0.408  0.870  0.407  1.0
  O  O18  1  0.870  0.777  0.906  1.0
  O  O19  1  0.223  0.130  0.594  1.0
  O  O20  1  0.130  0.223  0.094  1.0
  O  O21  1  0.777  0.870  0.406  1.0
[/CIF]
.