The structure described by Li3CoSiCO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(4) atoms. In the second Li site, Li(2) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO5 trigonal bipyramids that share corners with two equivalent Co(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and edges with two equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 62-86°. Co(1) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted CoO6 octahedra that share corners with four equivalent Si(1)O4 tetrahedra, corners with four equivalent Li(2)O5 trigonal bipyramids, and edges with two equivalent Li(2)O5 trigonal bipyramids. Si(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with four equivalent Co(1)O6 octahedra and corners with six equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 45-60°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(2), and one C(1) atom to form a mixture of edge and corner-sharing OLi3C tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Co(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Li(2), one Co(1), and one C(1) atom. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(1)Li3C tetrahedra, corners with three equivalent O(5)Li2CoSi tetrahedra,  a cornercorner with one O(4)Li2CoSi trigonal pyramid,  a cornercorner with one O(6)Li2CoSi trigonal pyramid,  an edgeedge with one O(4)Li2CoSi trigonal pyramid, and  an edgeedge with one O(6)Li2CoSi trigonal pyramid. In the fifth O site, O(5) is bonded to two equivalent Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi tetrahedra that share corners with four equivalent O(6)Li2CoSi trigonal pyramids, corners with six equivalent O(4)Li2CoSi trigonal pyramids, and  an edgeedge with one O(1)Li3C tetrahedra. In the sixth O site, O(6) is bonded to two equivalent Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(1)Li3C tetrahedra, corners with four equivalent O(5)Li2CoSi tetrahedra, corners with two equivalent O(4)Li2CoSi trigonal pyramids, and edges with two equivalent O(4)Li2CoSi trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3CoSiCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.290
_cell_length_b   5.036
_cell_length_c   8.395
_cell_angle_alpha   85.169
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   264.966
_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
  Li  Li0  1  0.750  0.244  0.898  1.0
  Li  Li1  1  0.980  0.755  0.722  1.0
  Li  Li2  1  0.520  0.755  0.722  1.0
  Li  Li3  1  0.480  0.245  0.278  1.0
  Li  Li4  1  0.020  0.245  0.278  1.0
  Li  Li5  1  0.250  0.756  0.102  1.0
  Co  Co6  1  0.250  0.198  0.669  1.0
  Co  Co7  1  0.750  0.802  0.331  1.0
  Si  Si8  1  0.750  0.291  0.579  1.0
  Si  Si9  1  0.250  0.709  0.421  1.0
  C  C10  1  0.250  0.290  0.968  1.0
  C  C11  1  0.750  0.710  0.032  1.0
  O  O12  1  0.750  0.650  0.885  1.0
  O  O13  1  0.250  0.046  0.931  1.0
  O  O14  1  0.250  0.479  0.853  1.0
  O  O15  1  0.950  0.188  0.696  1.0
  O  O16  1  0.550  0.188  0.696  1.0
  O  O17  1  0.750  0.620  0.553  1.0
  O  O18  1  0.250  0.830  0.594  1.0
  O  O19  1  0.750  0.170  0.406  1.0
  O  O20  1  0.250  0.380  0.447  1.0
  O  O21  1  0.450  0.812  0.304  1.0
  O  O22  1  0.050  0.812  0.304  1.0
  O  O23  1  0.750  0.521  0.147  1.0
  O  O24  1  0.750  0.954  0.069  1.0
  O  O25  1  0.250  0.350  0.115  1.0
[/CIF]
.
The structure described by Li3CoSiCO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(4) atoms. In the second Li site, Li(2) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO5 trigonal bipyramids that share corners with two equivalent Co(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and edges with two equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 62-86°. Co(1) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted CoO6 octahedra that share corners with four equivalent Si(1)O4 tetrahedra, corners with four equivalent Li(2)O5 trigonal bipyramids, and edges with two equivalent Li(2)O5 trigonal bipyramids. Si(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with four equivalent Co(1)O6 octahedra and corners with six equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 45-60°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Li(2), and one C(1) atom to form a mixture of edge and corner-sharing OLi3C tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Co(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Li(2), one Co(1), and one C(1) atom. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(1)Li3C tetrahedra, corners with three equivalent O(5)Li2CoSi tetrahedra,  a cornercorner with one O(4)Li2CoSi trigonal pyramid,  a cornercorner with one O(6)Li2CoSi trigonal pyramid,  an edgeedge with one O(4)Li2CoSi trigonal pyramid, and  an edgeedge with one O(6)Li2CoSi trigonal pyramid. In the fifth O site, O(5) is bonded to two equivalent Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi tetrahedra that share corners with four equivalent O(6)Li2CoSi trigonal pyramids, corners with six equivalent O(4)Li2CoSi trigonal pyramids, and  an edgeedge with one O(1)Li3C tetrahedra. In the sixth O site, O(6) is bonded to two equivalent Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi trigonal pyramids that share corners with two equivalent O(1)Li3C tetrahedra, corners with four equivalent O(5)Li2CoSi tetrahedra, corners with two equivalent O(4)Li2CoSi trigonal pyramids, and edges with two equivalent O(4)Li2CoSi trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3CoSiCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.290
_cell_length_b   5.036
_cell_length_c   8.395
_cell_angle_alpha   85.169
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   264.966
_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
  Li  Li0  1  0.750  0.244  0.898  1.0
  Li  Li1  1  0.980  0.755  0.722  1.0
  Li  Li2  1  0.520  0.755  0.722  1.0
  Li  Li3  1  0.480  0.245  0.278  1.0
  Li  Li4  1  0.020  0.245  0.278  1.0
  Li  Li5  1  0.250  0.756  0.102  1.0
  Co  Co6  1  0.250  0.198  0.669  1.0
  Co  Co7  1  0.750  0.802  0.331  1.0
  Si  Si8  1  0.750  0.291  0.579  1.0
  Si  Si9  1  0.250  0.709  0.421  1.0
  C  C10  1  0.250  0.290  0.968  1.0
  C  C11  1  0.750  0.710  0.032  1.0
  O  O12  1  0.750  0.650  0.885  1.0
  O  O13  1  0.250  0.046  0.931  1.0
  O  O14  1  0.250  0.479  0.853  1.0
  O  O15  1  0.950  0.188  0.696  1.0
  O  O16  1  0.550  0.188  0.696  1.0
  O  O17  1  0.750  0.620  0.553  1.0
  O  O18  1  0.250  0.830  0.594  1.0
  O  O19  1  0.750  0.170  0.406  1.0
  O  O20  1  0.250  0.380  0.447  1.0
  O  O21  1  0.450  0.812  0.304  1.0
  O  O22  1  0.050  0.812  0.304  1.0
  O  O23  1  0.750  0.521  0.147  1.0
  O  O24  1  0.750  0.954  0.069  1.0
  O  O25  1  0.250  0.350  0.115  1.0
[/CIF]
.