The material described by Li2CuCO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form a mixture of corner and edge-sharing LiO4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form a mixture of corner and edge-sharing LiO4 tetrahedra. Cu(1) is bonded in a distorted trigonal planar geometry to one O(3) and two equivalent O(4) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), two equivalent Li(1), and one C(1) atom to form distorted OLi3C tetrahedra that share  a cornercorner with one O(4)Li2Cu2 tetrahedra, corners with two equivalent O(1)Li3C tetrahedra, and  an edgeedge with one O(4)Li2Cu2 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one C(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(2), one Cu(1), and one C(1) atom. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), and two equivalent Cu(1) atoms to form OLi2Cu2 tetrahedra that share  a cornercorner with one O(1)Li3C tetrahedra, corners with two equivalent O(4)Li2Cu2 tetrahedra, and  an edgeedge with one O(1)Li3C tetrahedra. is represented by the CIF file [CIF]
data_Li2CuCO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.052
_cell_length_b   6.901
_cell_length_c   10.713
_cell_angle_alpha   81.207
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   369.134
_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  0.661  0.884  0.791  1.0
  Li  Li1  1  0.839  0.884  0.291  1.0
  Li  Li2  1  0.824  0.776  0.568  1.0
  Li  Li3  1  0.676  0.776  0.068  1.0
  Li  Li4  1  0.324  0.224  0.932  1.0
  Li  Li5  1  0.176  0.224  0.432  1.0
  Li  Li6  1  0.161  0.116  0.709  1.0
  Li  Li7  1  0.339  0.116  0.209  1.0
  Cu  Cu8  1  0.838  0.463  0.822  1.0
  Cu  Cu9  1  0.338  0.537  0.678  1.0
  Cu  Cu10  1  0.662  0.463  0.322  1.0
  Cu  Cu11  1  0.162  0.537  0.178  1.0
  C  C12  1  0.174  0.816  0.939  1.0
  C  C13  1  0.326  0.816  0.439  1.0
  C  C14  1  0.674  0.184  0.561  1.0
  C  C15  1  0.826  0.184  0.061  1.0
  O  O16  1  0.308  0.940  0.860  1.0
  O  O17  1  0.192  0.940  0.360  1.0
  O  O18  1  0.924  0.795  0.927  1.0
  O  O19  1  0.576  0.795  0.427  1.0
  O  O20  1  0.194  0.714  0.532  1.0
  O  O21  1  0.655  0.646  0.716  1.0
  O  O22  1  0.306  0.714  0.032  1.0
  O  O23  1  0.845  0.646  0.216  1.0
  O  O24  1  0.155  0.354  0.784  1.0
  O  O25  1  0.694  0.286  0.968  1.0
  O  O26  1  0.345  0.354  0.284  1.0
  O  O27  1  0.806  0.286  0.468  1.0
  O  O28  1  0.424  0.205  0.573  1.0
  O  O29  1  0.076  0.205  0.073  1.0
  O  O30  1  0.808  0.060  0.640  1.0
  O  O31  1  0.692  0.060  0.140  1.0
[/CIF]
.
The material described by Li2CuCO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form a mixture of corner and edge-sharing LiO4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form a mixture of corner and edge-sharing LiO4 tetrahedra. Cu(1) is bonded in a distorted trigonal planar geometry to one O(3) and two equivalent O(4) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), two equivalent Li(1), and one C(1) atom to form distorted OLi3C tetrahedra that share  a cornercorner with one O(4)Li2Cu2 tetrahedra, corners with two equivalent O(1)Li3C tetrahedra, and  an edgeedge with one O(4)Li2Cu2 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one C(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(2), one Cu(1), and one C(1) atom. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), and two equivalent Cu(1) atoms to form OLi2Cu2 tetrahedra that share  a cornercorner with one O(1)Li3C tetrahedra, corners with two equivalent O(4)Li2Cu2 tetrahedra, and  an edgeedge with one O(1)Li3C tetrahedra. is represented by the CIF file [CIF]
data_Li2CuCO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.052
_cell_length_b   6.901
_cell_length_c   10.713
_cell_angle_alpha   81.207
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   369.134
_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  0.661  0.884  0.791  1.0
  Li  Li1  1  0.839  0.884  0.291  1.0
  Li  Li2  1  0.824  0.776  0.568  1.0
  Li  Li3  1  0.676  0.776  0.068  1.0
  Li  Li4  1  0.324  0.224  0.932  1.0
  Li  Li5  1  0.176  0.224  0.432  1.0
  Li  Li6  1  0.161  0.116  0.709  1.0
  Li  Li7  1  0.339  0.116  0.209  1.0
  Cu  Cu8  1  0.838  0.463  0.822  1.0
  Cu  Cu9  1  0.338  0.537  0.678  1.0
  Cu  Cu10  1  0.662  0.463  0.322  1.0
  Cu  Cu11  1  0.162  0.537  0.178  1.0
  C  C12  1  0.174  0.816  0.939  1.0
  C  C13  1  0.326  0.816  0.439  1.0
  C  C14  1  0.674  0.184  0.561  1.0
  C  C15  1  0.826  0.184  0.061  1.0
  O  O16  1  0.308  0.940  0.860  1.0
  O  O17  1  0.192  0.940  0.360  1.0
  O  O18  1  0.924  0.795  0.927  1.0
  O  O19  1  0.576  0.795  0.427  1.0
  O  O20  1  0.194  0.714  0.532  1.0
  O  O21  1  0.655  0.646  0.716  1.0
  O  O22  1  0.306  0.714  0.032  1.0
  O  O23  1  0.845  0.646  0.216  1.0
  O  O24  1  0.155  0.354  0.784  1.0
  O  O25  1  0.694  0.286  0.968  1.0
  O  O26  1  0.345  0.354  0.284  1.0
  O  O27  1  0.806  0.286  0.468  1.0
  O  O28  1  0.424  0.205  0.573  1.0
  O  O29  1  0.076  0.205  0.073  1.0
  O  O30  1  0.808  0.060  0.640  1.0
  O  O31  1  0.692  0.060  0.140  1.0
[/CIF]
.