The compound described by LiCo2C2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to one O(7), two equivalent O(5), and two equivalent O(6) atoms to form distorted edge-sharing LiO5 square pyramids. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form corner-sharing CoO5 square pyramids. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. 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(6) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Co(2) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(1), one Co(2), and one C(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one C(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(1), one Co(2), and one C(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiCo2C2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.311
_cell_length_b   9.684
_cell_length_c   9.955
_cell_angle_alpha   73.218
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   582.484
_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  0.401  0.493  0.773  1.0
  Li  Li1  1  0.901  0.507  0.727  1.0
  Li  Li2  1  0.099  0.493  0.273  1.0
  Li  Li3  1  0.599  0.507  0.227  1.0
  Co  Co4  1  0.401  0.020  0.728  1.0
  Co  Co5  1  0.099  0.020  0.228  1.0
  Co  Co6  1  0.659  0.798  0.639  1.0
  Co  Co7  1  0.841  0.798  0.139  1.0
  Co  Co8  1  0.159  0.202  0.861  1.0
  Co  Co9  1  0.341  0.202  0.361  1.0
  Co  Co10  1  0.901  0.980  0.772  1.0
  Co  Co11  1  0.599  0.980  0.272  1.0
  C  C12  1  0.165  0.776  0.673  1.0
  C  C13  1  0.755  0.676  0.937  1.0
  C  C14  1  0.335  0.776  0.173  1.0
  C  C15  1  0.745  0.676  0.437  1.0
  C  C16  1  0.255  0.324  0.563  1.0
  C  C17  1  0.665  0.224  0.827  1.0
  C  C18  1  0.245  0.324  0.063  1.0
  C  C19  1  0.835  0.224  0.327  1.0
  O  O20  1  0.164  0.003  0.837  1.0
  O  O21  1  0.790  0.813  0.933  1.0
  O  O22  1  0.336  0.003  0.337  1.0
  O  O23  1  0.988  0.848  0.665  1.0
  O  O24  1  0.345  0.847  0.671  1.0
  O  O25  1  0.697  0.644  0.826  1.0
  O  O26  1  0.710  0.813  0.433  1.0
  O  O27  1  0.169  0.645  0.678  1.0
  O  O28  1  0.512  0.848  0.165  1.0
  O  O29  1  0.155  0.847  0.171  1.0
  O  O30  1  0.222  0.416  0.943  1.0
  O  O31  1  0.722  0.584  0.557  1.0
  O  O32  1  0.803  0.644  0.326  1.0
  O  O33  1  0.331  0.645  0.178  1.0
  O  O34  1  0.669  0.355  0.822  1.0
  O  O35  1  0.197  0.356  0.674  1.0
  O  O36  1  0.278  0.416  0.443  1.0
  O  O37  1  0.778  0.584  0.057  1.0
  O  O38  1  0.845  0.153  0.829  1.0
  O  O39  1  0.488  0.152  0.835  1.0
  O  O40  1  0.831  0.355  0.322  1.0
  O  O41  1  0.290  0.187  0.567  1.0
  O  O42  1  0.303  0.356  0.174  1.0
  O  O43  1  0.655  0.153  0.329  1.0
  O  O44  1  0.012  0.152  0.335  1.0
  O  O45  1  0.664  0.997  0.663  1.0
  O  O46  1  0.210  0.187  0.067  1.0
  O  O47  1  0.836  0.997  0.163  1.0
[/CIF]
.
The compound described by LiCo2C2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to one O(7), two equivalent O(5), and two equivalent O(6) atoms to form distorted edge-sharing LiO5 square pyramids. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form corner-sharing CoO5 square pyramids. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. 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(6) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Co(2) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(1), one Co(2), and one C(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one C(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(1), one Co(2), and one C(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiCo2C2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.311
_cell_length_b   9.684
_cell_length_c   9.955
_cell_angle_alpha   73.218
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   582.484
_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  0.401  0.493  0.773  1.0
  Li  Li1  1  0.901  0.507  0.727  1.0
  Li  Li2  1  0.099  0.493  0.273  1.0
  Li  Li3  1  0.599  0.507  0.227  1.0
  Co  Co4  1  0.401  0.020  0.728  1.0
  Co  Co5  1  0.099  0.020  0.228  1.0
  Co  Co6  1  0.659  0.798  0.639  1.0
  Co  Co7  1  0.841  0.798  0.139  1.0
  Co  Co8  1  0.159  0.202  0.861  1.0
  Co  Co9  1  0.341  0.202  0.361  1.0
  Co  Co10  1  0.901  0.980  0.772  1.0
  Co  Co11  1  0.599  0.980  0.272  1.0
  C  C12  1  0.165  0.776  0.673  1.0
  C  C13  1  0.755  0.676  0.937  1.0
  C  C14  1  0.335  0.776  0.173  1.0
  C  C15  1  0.745  0.676  0.437  1.0
  C  C16  1  0.255  0.324  0.563  1.0
  C  C17  1  0.665  0.224  0.827  1.0
  C  C18  1  0.245  0.324  0.063  1.0
  C  C19  1  0.835  0.224  0.327  1.0
  O  O20  1  0.164  0.003  0.837  1.0
  O  O21  1  0.790  0.813  0.933  1.0
  O  O22  1  0.336  0.003  0.337  1.0
  O  O23  1  0.988  0.848  0.665  1.0
  O  O24  1  0.345  0.847  0.671  1.0
  O  O25  1  0.697  0.644  0.826  1.0
  O  O26  1  0.710  0.813  0.433  1.0
  O  O27  1  0.169  0.645  0.678  1.0
  O  O28  1  0.512  0.848  0.165  1.0
  O  O29  1  0.155  0.847  0.171  1.0
  O  O30  1  0.222  0.416  0.943  1.0
  O  O31  1  0.722  0.584  0.557  1.0
  O  O32  1  0.803  0.644  0.326  1.0
  O  O33  1  0.331  0.645  0.178  1.0
  O  O34  1  0.669  0.355  0.822  1.0
  O  O35  1  0.197  0.356  0.674  1.0
  O  O36  1  0.278  0.416  0.443  1.0
  O  O37  1  0.778  0.584  0.057  1.0
  O  O38  1  0.845  0.153  0.829  1.0
  O  O39  1  0.488  0.152  0.835  1.0
  O  O40  1  0.831  0.355  0.322  1.0
  O  O41  1  0.290  0.187  0.567  1.0
  O  O42  1  0.303  0.356  0.174  1.0
  O  O43  1  0.655  0.153  0.329  1.0
  O  O44  1  0.012  0.152  0.335  1.0
  O  O45  1  0.664  0.997  0.663  1.0
  O  O46  1  0.210  0.187  0.067  1.0
  O  O47  1  0.836  0.997  0.163  1.0
[/CIF]
.