The material described by Li3Co2(SiO4)2 crystallizes in the monoclinic C2 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form LiO4 tetrahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CoO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. In the second Co site, Co(2) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form CoO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form distorted corner-sharing OLi2CoSi tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Co(2), and one Si(1) atom to form a mixture of corner and edge-sharing OLi2CoSi tetrahedra. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Co(2), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3Co2(SiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.328
_cell_length_b   5.328
_cell_length_c   6.307
_cell_angle_alpha   89.059
_cell_angle_beta   89.059
_cell_angle_gamma   90.420
_symmetry_Int_Tables_number   1
_cell_volume   179.019
_cell_formula_units_Z   1
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  0.818  0.828  0.264  1.0
  Li  Li1  1  0.308  0.692  0.000  1.0
  Li  Li2  1  0.172  0.182  0.736  1.0
  Co  Co3  1  0.333  0.667  0.500  1.0
  Co  Co4  1  0.675  0.325  0.000  1.0
  Si  Si5  1  0.824  0.823  0.755  1.0
  Si  Si6  1  0.177  0.176  0.245  1.0
  O  O7  1  0.214  0.869  0.251  1.0
  O  O8  1  0.131  0.786  0.749  1.0
  O  O9  1  0.690  0.732  0.541  1.0
  O  O10  1  0.699  0.683  0.974  1.0
  O  O11  1  0.268  0.310  0.459  1.0
  O  O12  1  0.317  0.301  0.026  1.0
  O  O13  1  0.868  0.207  0.217  1.0
  O  O14  1  0.793  0.132  0.783  1.0
[/CIF]
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The material described by Li3Co2(SiO4)2 crystallizes in the monoclinic C2 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form LiO4 tetrahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CoO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. In the second Co site, Co(2) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form CoO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form distorted corner-sharing OLi2CoSi tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Co(2), and one Si(1) atom to form a mixture of corner and edge-sharing OLi2CoSi tetrahedra. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Co(2), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3Co2(SiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.328
_cell_length_b   5.328
_cell_length_c   6.307
_cell_angle_alpha   89.059
_cell_angle_beta   89.059
_cell_angle_gamma   90.420
_symmetry_Int_Tables_number   1
_cell_volume   179.019
_cell_formula_units_Z   1
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  0.818  0.828  0.264  1.0
  Li  Li1  1  0.308  0.692  0.000  1.0
  Li  Li2  1  0.172  0.182  0.736  1.0
  Co  Co3  1  0.333  0.667  0.500  1.0
  Co  Co4  1  0.675  0.325  0.000  1.0
  Si  Si5  1  0.824  0.823  0.755  1.0
  Si  Si6  1  0.177  0.176  0.245  1.0
  O  O7  1  0.214  0.869  0.251  1.0
  O  O8  1  0.131  0.786  0.749  1.0
  O  O9  1  0.690  0.732  0.541  1.0
  O  O10  1  0.699  0.683  0.974  1.0
  O  O11  1  0.268  0.310  0.459  1.0
  O  O12  1  0.317  0.301  0.026  1.0
  O  O13  1  0.868  0.207  0.217  1.0
  O  O14  1  0.793  0.132  0.783  1.0
[/CIF]
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