The structure described by Li3Co2(SiO4)2 is Clathrate-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(5), one O(6), and two equivalent O(2) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Si(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. Co(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form CoO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, and corners with four equivalent Co(1)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one Si(1) atom. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form OLi2CoSi trigonal pyramids that share corners with two equivalent O(5)Li3Si tetrahedra, corners with two equivalent O(6)LiCo2Si tetrahedra, and  an edgeedge with one O(2)Li2CoSi trigonal pyramid. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(2) atom. In the fifth O site, O(5) is bonded to one Li(2), two equivalent Li(1), and one Si(2) atom to form distorted OLi3Si tetrahedra that share corners with two equivalent O(6)LiCo2Si tetrahedra and corners with four equivalent O(2)Li2CoSi trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(2), two equivalent Co(1), and one Si(2) atom to form distorted OLiCo2Si tetrahedra that share corners with two equivalent O(5)Li3Si tetrahedra and corners with four equivalent O(2)Li2CoSi trigonal pyramids. is represented by the CIF card [CIF]
data_Li3Co2(SiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.230
_cell_length_b   5.230
_cell_length_c   6.467
_cell_angle_alpha   89.322
_cell_angle_beta   89.322
_cell_angle_gamma   91.588
_symmetry_Int_Tables_number   1
_cell_volume   176.800
_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  0.172  0.826  0.506  1.0
  Li  Li1  1  0.317  0.317  0.265  1.0
  Li  Li2  1  0.826  0.172  0.506  1.0
  Co  Co3  1  0.197  0.811  0.994  1.0
  Co  Co4  1  0.811  0.197  0.994  1.0
  Si  Si5  1  0.688  0.688  0.257  1.0
  Si  Si6  1  0.326  0.326  0.743  1.0
  O  O7  1  0.826  0.826  0.045  1.0
  O  O8  1  0.371  0.722  0.240  1.0
  O  O9  1  0.811  0.811  0.456  1.0
  O  O10  1  0.267  0.633  0.757  1.0
  O  O11  1  0.722  0.371  0.240  1.0
  O  O12  1  0.205  0.205  0.537  1.0
  O  O13  1  0.633  0.267  0.757  1.0
  O  O14  1  0.192  0.192  0.963  1.0
[/CIF]
.
The structure described by Li3Co2(SiO4)2 is Clathrate-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(5), one O(6), and two equivalent O(2) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Si(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. Co(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form CoO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra, and corners with four equivalent Co(1)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one Si(1) atom. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Co(1), and one Si(1) atom to form OLi2CoSi trigonal pyramids that share corners with two equivalent O(5)Li3Si tetrahedra, corners with two equivalent O(6)LiCo2Si tetrahedra, and  an edgeedge with one O(2)Li2CoSi trigonal pyramid. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(2) atom. In the fifth O site, O(5) is bonded to one Li(2), two equivalent Li(1), and one Si(2) atom to form distorted OLi3Si tetrahedra that share corners with two equivalent O(6)LiCo2Si tetrahedra and corners with four equivalent O(2)Li2CoSi trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(2), two equivalent Co(1), and one Si(2) atom to form distorted OLiCo2Si tetrahedra that share corners with two equivalent O(5)Li3Si tetrahedra and corners with four equivalent O(2)Li2CoSi trigonal pyramids. is represented by the CIF card [CIF]
data_Li3Co2(SiO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.230
_cell_length_b   5.230
_cell_length_c   6.467
_cell_angle_alpha   89.322
_cell_angle_beta   89.322
_cell_angle_gamma   91.588
_symmetry_Int_Tables_number   1
_cell_volume   176.800
_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  0.172  0.826  0.506  1.0
  Li  Li1  1  0.317  0.317  0.265  1.0
  Li  Li2  1  0.826  0.172  0.506  1.0
  Co  Co3  1  0.197  0.811  0.994  1.0
  Co  Co4  1  0.811  0.197  0.994  1.0
  Si  Si5  1  0.688  0.688  0.257  1.0
  Si  Si6  1  0.326  0.326  0.743  1.0
  O  O7  1  0.826  0.826  0.045  1.0
  O  O8  1  0.371  0.722  0.240  1.0
  O  O9  1  0.811  0.811  0.456  1.0
  O  O10  1  0.267  0.633  0.757  1.0
  O  O11  1  0.722  0.371  0.240  1.0
  O  O12  1  0.205  0.205  0.537  1.0
  O  O13  1  0.633  0.267  0.757  1.0
  O  O14  1  0.192  0.192  0.963  1.0
[/CIF]
.