The structure described by LiCu2C2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms to form face-sharing LiO6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), and two equivalent O(1) atoms. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to two equivalent Cu(1) and two equivalent Cu(2) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one C(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one C(2) atom. is represented by the CIF card [CIF]
data_LiCu2C2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.676
_cell_length_b   9.960
_cell_length_c   10.096
_cell_angle_alpha   68.705
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   531.766
_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
  Li  Li0  1  0.434  0.251  0.484  1.0
  Li  Li1  1  0.934  0.249  0.516  1.0
  Li  Li2  1  0.066  0.751  0.484  1.0
  Li  Li3  1  0.566  0.749  0.516  1.0
  Cu  Cu4  1  0.366  0.214  0.027  1.0
  Cu  Cu5  1  0.134  0.714  0.027  1.0
  Cu  Cu6  1  0.662  0.469  0.121  1.0
  Cu  Cu7  1  0.838  0.969  0.121  1.0
  Cu  Cu8  1  0.162  0.031  0.879  1.0
  Cu  Cu9  1  0.338  0.531  0.879  1.0
  Cu  Cu10  1  0.866  0.286  0.973  1.0
  Cu  Cu11  1  0.634  0.786  0.973  1.0
  C  C12  1  0.127  0.314  0.219  1.0
  C  C13  1  0.752  0.046  0.359  1.0
  C  C14  1  0.373  0.814  0.219  1.0
  C  C15  1  0.748  0.546  0.359  1.0
  C  C16  1  0.252  0.454  0.641  1.0
  C  C17  1  0.627  0.186  0.781  1.0
  C  C18  1  0.248  0.954  0.641  1.0
  C  C19  1  0.873  0.686  0.781  1.0
  O  O20  1  0.075  0.114  0.018  1.0
  O  O21  1  0.425  0.614  0.018  1.0
  O  O22  1  0.740  0.085  0.218  1.0
  O  O23  1  0.955  0.360  0.121  1.0
  O  O24  1  0.289  0.233  0.199  1.0
  O  O25  1  0.760  0.585  0.218  1.0
  O  O26  1  0.545  0.860  0.121  1.0
  O  O27  1  0.135  0.350  0.325  1.0
  O  O28  1  0.704  0.146  0.404  1.0
  O  O29  1  0.211  0.733  0.199  1.0
  O  O30  1  0.189  0.082  0.566  1.0
  O  O31  1  0.689  0.418  0.434  1.0
  O  O32  1  0.365  0.850  0.325  1.0
  O  O33  1  0.796  0.646  0.404  1.0
  O  O34  1  0.204  0.354  0.596  1.0
  O  O35  1  0.635  0.150  0.675  1.0
  O  O36  1  0.311  0.582  0.566  1.0
  O  O37  1  0.811  0.918  0.434  1.0
  O  O38  1  0.789  0.267  0.801  1.0
  O  O39  1  0.296  0.854  0.596  1.0
  O  O40  1  0.865  0.650  0.675  1.0
  O  O41  1  0.455  0.140  0.879  1.0
  O  O42  1  0.240  0.415  0.782  1.0
  O  O43  1  0.711  0.767  0.801  1.0
  O  O44  1  0.045  0.640  0.879  1.0
  O  O45  1  0.260  0.915  0.782  1.0
  O  O46  1  0.575  0.386  0.982  1.0
  O  O47  1  0.925  0.886  0.982  1.0
[/CIF]
.
The structure described by LiCu2C2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms to form face-sharing LiO6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), and two equivalent O(1) atoms. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to two equivalent Cu(1) and two equivalent Cu(2) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one C(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one C(2) atom. is represented by the CIF card [CIF]
data_LiCu2C2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.676
_cell_length_b   9.960
_cell_length_c   10.096
_cell_angle_alpha   68.705
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   531.766
_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
  Li  Li0  1  0.434  0.251  0.484  1.0
  Li  Li1  1  0.934  0.249  0.516  1.0
  Li  Li2  1  0.066  0.751  0.484  1.0
  Li  Li3  1  0.566  0.749  0.516  1.0
  Cu  Cu4  1  0.366  0.214  0.027  1.0
  Cu  Cu5  1  0.134  0.714  0.027  1.0
  Cu  Cu6  1  0.662  0.469  0.121  1.0
  Cu  Cu7  1  0.838  0.969  0.121  1.0
  Cu  Cu8  1  0.162  0.031  0.879  1.0
  Cu  Cu9  1  0.338  0.531  0.879  1.0
  Cu  Cu10  1  0.866  0.286  0.973  1.0
  Cu  Cu11  1  0.634  0.786  0.973  1.0
  C  C12  1  0.127  0.314  0.219  1.0
  C  C13  1  0.752  0.046  0.359  1.0
  C  C14  1  0.373  0.814  0.219  1.0
  C  C15  1  0.748  0.546  0.359  1.0
  C  C16  1  0.252  0.454  0.641  1.0
  C  C17  1  0.627  0.186  0.781  1.0
  C  C18  1  0.248  0.954  0.641  1.0
  C  C19  1  0.873  0.686  0.781  1.0
  O  O20  1  0.075  0.114  0.018  1.0
  O  O21  1  0.425  0.614  0.018  1.0
  O  O22  1  0.740  0.085  0.218  1.0
  O  O23  1  0.955  0.360  0.121  1.0
  O  O24  1  0.289  0.233  0.199  1.0
  O  O25  1  0.760  0.585  0.218  1.0
  O  O26  1  0.545  0.860  0.121  1.0
  O  O27  1  0.135  0.350  0.325  1.0
  O  O28  1  0.704  0.146  0.404  1.0
  O  O29  1  0.211  0.733  0.199  1.0
  O  O30  1  0.189  0.082  0.566  1.0
  O  O31  1  0.689  0.418  0.434  1.0
  O  O32  1  0.365  0.850  0.325  1.0
  O  O33  1  0.796  0.646  0.404  1.0
  O  O34  1  0.204  0.354  0.596  1.0
  O  O35  1  0.635  0.150  0.675  1.0
  O  O36  1  0.311  0.582  0.566  1.0
  O  O37  1  0.811  0.918  0.434  1.0
  O  O38  1  0.789  0.267  0.801  1.0
  O  O39  1  0.296  0.854  0.596  1.0
  O  O40  1  0.865  0.650  0.675  1.0
  O  O41  1  0.455  0.140  0.879  1.0
  O  O42  1  0.240  0.415  0.782  1.0
  O  O43  1  0.711  0.767  0.801  1.0
  O  O44  1  0.045  0.640  0.879  1.0
  O  O45  1  0.260  0.915  0.782  1.0
  O  O46  1  0.575  0.386  0.982  1.0
  O  O47  1  0.925  0.886  0.982  1.0
[/CIF]
.