The compound described by Li4Co2Si3O10 crystallizes in the monoclinic C2/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(3), one O(5), and two equivalent O(2) atoms to form LiO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra, corners with three equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Co(1)O5 trigonal bipyramid. In the second Li site, Li(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. Co(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(5) atoms to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Si(2)O4 tetrahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Co(1)O5 trigonal bipyramid. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, and corners with four equivalent Co(1)O5 trigonal bipyramids. In the second Si site, Si(2) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Co(1)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(2), one Co(1), and one Si(2) atom to form distorted OLi2CoSi trigonal pyramids that share  a cornercorner with one O(2)Li2CoSi tetrahedra,  a cornercorner with one O(3)Li2CoSi tetrahedra, corners with two equivalent O(5)LiCo2Si tetrahedra, corners with three equivalent O(1)Li2CoSi trigonal pyramids, and  an edgeedge with one O(3)Li2CoSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Co(1), and one Si(1) atom to form distorted OLi2CoSi tetrahedra that share corners with three equivalent O(5)LiCo2Si tetrahedra, corners with four equivalent O(3)Li2CoSi tetrahedra,  a cornercorner with one O(1)Li2CoSi trigonal pyramid,  an edgeedge with one O(2)Li2CoSi tetrahedra, and  an edgeedge with one O(5)LiCo2Si tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi tetrahedra that share corners with four equivalent O(2)Li2CoSi tetrahedra, corners with four equivalent O(5)LiCo2Si tetrahedra,  a cornercorner with one O(1)Li2CoSi trigonal pyramid, and  an edgeedge with one O(1)Li2CoSi trigonal pyramid. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Si(1), and one Si(2) atom. In the fifth O site, O(5) is bonded to one Li(1), two equivalent Co(1), and one Si(1) atom to form distorted OLiCo2Si tetrahedra that share corners with three equivalent O(2)Li2CoSi tetrahedra, corners with four equivalent O(3)Li2CoSi tetrahedra, corners with two equivalent O(1)Li2CoSi trigonal pyramids,  an edgeedge with one O(2)Li2CoSi tetrahedra, and  an edgeedge with one O(5)LiCo2Si tetrahedra. is represented by the CIF file [CIF]
data_Li4Co2Si3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.362
_cell_length_b   5.362
_cell_length_c   17.084
_cell_angle_alpha   82.513
_cell_angle_beta   82.513
_cell_angle_gamma   60.608
_symmetry_Int_Tables_number   1
_cell_volume   423.056
_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  0.827  0.684  0.948  1.0
  Li  Li1  1  0.579  0.786  0.771  1.0
  Li  Li2  1  0.684  0.827  0.448  1.0
  Li  Li3  1  0.786  0.579  0.271  1.0
  Li  Li4  1  0.214  0.421  0.729  1.0
  Li  Li5  1  0.316  0.173  0.552  1.0
  Li  Li6  1  0.421  0.214  0.229  1.0
  Li  Li7  1  0.173  0.316  0.052  1.0
  Co  Co8  1  0.188  0.019  0.913  1.0
  Co  Co9  1  0.019  0.188  0.413  1.0
  Co  Co10  1  0.981  0.812  0.587  1.0
  Co  Co11  1  0.812  0.981  0.087  1.0
  Si  Si12  1  0.662  0.467  0.598  1.0
  Si  Si13  1  0.881  0.119  0.750  1.0
  Si  Si14  1  0.533  0.338  0.902  1.0
  Si  Si15  1  0.467  0.662  0.098  1.0
  Si  Si16  1  0.119  0.881  0.250  1.0
  Si  Si17  1  0.338  0.533  0.402  1.0
  O  O18  1  0.918  0.841  0.711  1.0
  O  O19  1  0.841  0.918  0.211  1.0
  O  O20  1  0.632  0.779  0.565  1.0
  O  O21  1  0.549  0.639  0.893  1.0
  O  O22  1  0.777  0.414  0.689  1.0
  O  O23  1  0.792  0.076  0.952  1.0
  O  O24  1  0.924  0.208  0.548  1.0
  O  O25  1  0.779  0.632  0.065  1.0
  O  O26  1  0.639  0.549  0.393  1.0
  O  O27  1  0.586  0.223  0.811  1.0
  O  O28  1  0.414  0.777  0.189  1.0
  O  O29  1  0.361  0.451  0.607  1.0
  O  O30  1  0.221  0.368  0.935  1.0
  O  O31  1  0.076  0.792  0.452  1.0
  O  O32  1  0.208  0.924  0.048  1.0
  O  O33  1  0.223  0.586  0.311  1.0
  O  O34  1  0.451  0.361  0.107  1.0
  O  O35  1  0.368  0.221  0.435  1.0
  O  O36  1  0.159  0.082  0.789  1.0
  O  O37  1  0.082  0.159  0.289  1.0
[/CIF]
.
The compound described by Li4Co2Si3O10 crystallizes in the monoclinic C2/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(3), one O(5), and two equivalent O(2) atoms to form LiO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra, corners with three equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Co(1)O5 trigonal bipyramid. In the second Li site, Li(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. Co(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(5) atoms to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Si(2)O4 tetrahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Co(1)O5 trigonal bipyramid. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, and corners with four equivalent Co(1)O5 trigonal bipyramids. In the second Si site, Si(2) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Co(1)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(2), one Co(1), and one Si(2) atom to form distorted OLi2CoSi trigonal pyramids that share  a cornercorner with one O(2)Li2CoSi tetrahedra,  a cornercorner with one O(3)Li2CoSi tetrahedra, corners with two equivalent O(5)LiCo2Si tetrahedra, corners with three equivalent O(1)Li2CoSi trigonal pyramids, and  an edgeedge with one O(3)Li2CoSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Co(1), and one Si(1) atom to form distorted OLi2CoSi tetrahedra that share corners with three equivalent O(5)LiCo2Si tetrahedra, corners with four equivalent O(3)Li2CoSi tetrahedra,  a cornercorner with one O(1)Li2CoSi trigonal pyramid,  an edgeedge with one O(2)Li2CoSi tetrahedra, and  an edgeedge with one O(5)LiCo2Si tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form distorted OLi2CoSi tetrahedra that share corners with four equivalent O(2)Li2CoSi tetrahedra, corners with four equivalent O(5)LiCo2Si tetrahedra,  a cornercorner with one O(1)Li2CoSi trigonal pyramid, and  an edgeedge with one O(1)Li2CoSi trigonal pyramid. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Si(1), and one Si(2) atom. In the fifth O site, O(5) is bonded to one Li(1), two equivalent Co(1), and one Si(1) atom to form distorted OLiCo2Si tetrahedra that share corners with three equivalent O(2)Li2CoSi tetrahedra, corners with four equivalent O(3)Li2CoSi tetrahedra, corners with two equivalent O(1)Li2CoSi trigonal pyramids,  an edgeedge with one O(2)Li2CoSi tetrahedra, and  an edgeedge with one O(5)LiCo2Si tetrahedra. is represented by the CIF file [CIF]
data_Li4Co2Si3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.362
_cell_length_b   5.362
_cell_length_c   17.084
_cell_angle_alpha   82.513
_cell_angle_beta   82.513
_cell_angle_gamma   60.608
_symmetry_Int_Tables_number   1
_cell_volume   423.056
_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  0.827  0.684  0.948  1.0
  Li  Li1  1  0.579  0.786  0.771  1.0
  Li  Li2  1  0.684  0.827  0.448  1.0
  Li  Li3  1  0.786  0.579  0.271  1.0
  Li  Li4  1  0.214  0.421  0.729  1.0
  Li  Li5  1  0.316  0.173  0.552  1.0
  Li  Li6  1  0.421  0.214  0.229  1.0
  Li  Li7  1  0.173  0.316  0.052  1.0
  Co  Co8  1  0.188  0.019  0.913  1.0
  Co  Co9  1  0.019  0.188  0.413  1.0
  Co  Co10  1  0.981  0.812  0.587  1.0
  Co  Co11  1  0.812  0.981  0.087  1.0
  Si  Si12  1  0.662  0.467  0.598  1.0
  Si  Si13  1  0.881  0.119  0.750  1.0
  Si  Si14  1  0.533  0.338  0.902  1.0
  Si  Si15  1  0.467  0.662  0.098  1.0
  Si  Si16  1  0.119  0.881  0.250  1.0
  Si  Si17  1  0.338  0.533  0.402  1.0
  O  O18  1  0.918  0.841  0.711  1.0
  O  O19  1  0.841  0.918  0.211  1.0
  O  O20  1  0.632  0.779  0.565  1.0
  O  O21  1  0.549  0.639  0.893  1.0
  O  O22  1  0.777  0.414  0.689  1.0
  O  O23  1  0.792  0.076  0.952  1.0
  O  O24  1  0.924  0.208  0.548  1.0
  O  O25  1  0.779  0.632  0.065  1.0
  O  O26  1  0.639  0.549  0.393  1.0
  O  O27  1  0.586  0.223  0.811  1.0
  O  O28  1  0.414  0.777  0.189  1.0
  O  O29  1  0.361  0.451  0.607  1.0
  O  O30  1  0.221  0.368  0.935  1.0
  O  O31  1  0.076  0.792  0.452  1.0
  O  O32  1  0.208  0.924  0.048  1.0
  O  O33  1  0.223  0.586  0.311  1.0
  O  O34  1  0.451  0.361  0.107  1.0
  O  O35  1  0.368  0.221  0.435  1.0
  O  O36  1  0.159  0.082  0.789  1.0
  O  O37  1  0.082  0.159  0.289  1.0
[/CIF]
.