The compound described by LiCo2C2O7 crystallizes in the monoclinic C2 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(4), one O(6), and one O(9) atom. In the second Li site, Li(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(3) and two equivalent O(7) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(11), one O(2), and one O(8) atom to form corner-sharing CoO4 tetrahedra. In the second Co site, Co(2) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form distorted corner-sharing CoO4 tetrahedra. In the third Co site, Co(3) is bonded to one O(10), one O(3), one O(5), and one O(6) atom to form corner-sharing CoO4 tetrahedra. There are three inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(3), one O(8), and one O(9) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(7) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(2), one Co(3), and one C(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Co(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to one Co(2) and one Co(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Co(3), and one C(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(2), one Co(2), and one C(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Co(1) and one C(1) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Li(1), one Co(2), and one C(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Li(1), one Co(3), and one C(3) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Co(1) and one C(3) atom. is represented by the CIF file [CIF]
data_LiCo2C2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.247
_cell_length_b   8.247
_cell_length_c   7.886
_cell_angle_alpha   88.951
_cell_angle_beta   88.951
_cell_angle_gamma   60.526
_symmetry_Int_Tables_number   1
_cell_volume   466.794
_cell_formula_units_Z   3
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  0.997  0.361  0.499  1.0
  Li  Li1  1  0.348  0.652  0.500  1.0
  Li  Li2  1  0.639  0.003  0.501  1.0
  Co  Co3  1  0.998  0.007  0.274  1.0
  Co  Co4  1  0.993  0.002  0.726  1.0
  Co  Co5  1  0.320  0.332  0.810  1.0
  Co  Co6  1  0.337  0.339  0.261  1.0
  Co  Co7  1  0.668  0.680  0.190  1.0
  Co  Co8  1  0.661  0.663  0.739  1.0
  C  C9  1  0.000  0.661  0.294  1.0
  C  C10  1  0.336  0.004  0.292  1.0
  C  C11  1  0.663  0.340  0.289  1.0
  C  C12  1  0.339  1.000  0.706  1.0
  C  C13  1  0.996  0.664  0.708  1.0
  C  C14  1  0.660  0.337  0.711  1.0
  O  O15  1  0.025  0.975  0.500  1.0
  O  O16  1  0.078  0.739  0.785  1.0
  O  O17  1  0.171  0.589  0.349  1.0
  O  O18  1  0.084  0.483  0.688  1.0
  O  O19  1  0.350  0.317  0.026  1.0
  O  O20  1  0.239  0.172  0.350  1.0
  O  O21  1  0.480  0.433  0.699  1.0
  O  O22  1  0.175  0.085  0.773  1.0
  O  O23  1  0.261  0.922  0.215  1.0
  O  O24  1  0.437  0.085  0.693  1.0
  O  O25  1  0.591  0.241  0.353  1.0
  O  O26  1  0.739  0.178  0.786  1.0
  O  O27  1  0.411  0.829  0.651  1.0
  O  O28  1  0.517  0.916  0.312  1.0
  O  O29  1  0.683  0.650  0.974  1.0
  O  O30  1  0.828  0.761  0.650  1.0
  O  O31  1  0.567  0.520  0.301  1.0
  O  O32  1  0.915  0.825  0.227  1.0
  O  O33  1  0.915  0.563  0.307  1.0
  O  O34  1  0.759  0.409  0.647  1.0
  O  O35  1  0.822  0.261  0.214  1.0
[/CIF]
.
The compound described by LiCo2C2O7 crystallizes in the monoclinic C2 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(4), one O(6), and one O(9) atom. In the second Li site, Li(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(3) and two equivalent O(7) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(11), one O(2), and one O(8) atom to form corner-sharing CoO4 tetrahedra. In the second Co site, Co(2) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form distorted corner-sharing CoO4 tetrahedra. In the third Co site, Co(3) is bonded to one O(10), one O(3), one O(5), and one O(6) atom to form corner-sharing CoO4 tetrahedra. There are three inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(3), one O(8), and one O(9) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(7) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(2), one Co(3), and one C(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Co(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to one Co(2) and one Co(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Co(3), and one C(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(2), one Co(2), and one C(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Co(1) and one C(1) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Li(1), one Co(2), and one C(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Li(1), one Co(3), and one C(3) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Co(1) and one C(3) atom. is represented by the CIF file [CIF]
data_LiCo2C2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.247
_cell_length_b   8.247
_cell_length_c   7.886
_cell_angle_alpha   88.951
_cell_angle_beta   88.951
_cell_angle_gamma   60.526
_symmetry_Int_Tables_number   1
_cell_volume   466.794
_cell_formula_units_Z   3
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  0.997  0.361  0.499  1.0
  Li  Li1  1  0.348  0.652  0.500  1.0
  Li  Li2  1  0.639  0.003  0.501  1.0
  Co  Co3  1  0.998  0.007  0.274  1.0
  Co  Co4  1  0.993  0.002  0.726  1.0
  Co  Co5  1  0.320  0.332  0.810  1.0
  Co  Co6  1  0.337  0.339  0.261  1.0
  Co  Co7  1  0.668  0.680  0.190  1.0
  Co  Co8  1  0.661  0.663  0.739  1.0
  C  C9  1  0.000  0.661  0.294  1.0
  C  C10  1  0.336  0.004  0.292  1.0
  C  C11  1  0.663  0.340  0.289  1.0
  C  C12  1  0.339  1.000  0.706  1.0
  C  C13  1  0.996  0.664  0.708  1.0
  C  C14  1  0.660  0.337  0.711  1.0
  O  O15  1  0.025  0.975  0.500  1.0
  O  O16  1  0.078  0.739  0.785  1.0
  O  O17  1  0.171  0.589  0.349  1.0
  O  O18  1  0.084  0.483  0.688  1.0
  O  O19  1  0.350  0.317  0.026  1.0
  O  O20  1  0.239  0.172  0.350  1.0
  O  O21  1  0.480  0.433  0.699  1.0
  O  O22  1  0.175  0.085  0.773  1.0
  O  O23  1  0.261  0.922  0.215  1.0
  O  O24  1  0.437  0.085  0.693  1.0
  O  O25  1  0.591  0.241  0.353  1.0
  O  O26  1  0.739  0.178  0.786  1.0
  O  O27  1  0.411  0.829  0.651  1.0
  O  O28  1  0.517  0.916  0.312  1.0
  O  O29  1  0.683  0.650  0.974  1.0
  O  O30  1  0.828  0.761  0.650  1.0
  O  O31  1  0.567  0.520  0.301  1.0
  O  O32  1  0.915  0.825  0.227  1.0
  O  O33  1  0.915  0.563  0.307  1.0
  O  O34  1  0.759  0.409  0.647  1.0
  O  O35  1  0.822  0.261  0.214  1.0
[/CIF]
.