The crystal structure described by Li2CoSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic C222_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Co(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(2) 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(1)O4 tetrahedra. 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, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. Si(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. There are two 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 a mixture of distorted corner and edge-sharing OLi2CoSi tetrahedra. 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 a mixture of corner and edge-sharing OLi2CoSi tetrahedra. is represented by the CIF card [CIF]
data_Li2CoSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.304
_cell_length_b   5.304
_cell_length_c   6.305
_cell_angle_alpha   90.002
_cell_angle_beta   90.001
_cell_angle_gamma   87.867
_symmetry_Int_Tables_number   1
_cell_volume   177.234
_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
  Co  Co0  1  0.821  0.821  0.750  1.0
  Co  Co1  1  0.179  0.179  0.250  1.0
  Li  Li2  1  0.319  0.681  0.500  1.0
  Li  Li3  1  0.681  0.319  1.000  1.0
  Li  Li4  1  0.813  0.813  0.250  1.0
  Li  Li5  1  0.187  0.187  0.750  1.0
  O  O6  1  0.198  0.805  0.784  1.0
  O  O7  1  0.195  0.802  0.216  1.0
  O  O8  1  0.802  0.195  0.284  1.0
  O  O9  1  0.805  0.198  0.716  1.0
  O  O10  1  0.634  0.708  0.999  1.0
  O  O11  1  0.292  0.366  0.001  1.0
  O  O12  1  0.708  0.634  0.501  1.0
  O  O13  1  0.366  0.292  0.499  1.0
  Si  Si14  1  0.324  0.676  1.000  1.0
  Si  Si15  1  0.676  0.324  0.500  1.0
[/CIF]
.
The crystal structure described by Li2CoSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic C222_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Co(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(2) 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(1)O4 tetrahedra. 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, corners with four equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. Si(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. There are two 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 a mixture of distorted corner and edge-sharing OLi2CoSi tetrahedra. 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 a mixture of corner and edge-sharing OLi2CoSi tetrahedra. is represented by the CIF card [CIF]
data_Li2CoSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.304
_cell_length_b   5.304
_cell_length_c   6.305
_cell_angle_alpha   90.002
_cell_angle_beta   90.001
_cell_angle_gamma   87.867
_symmetry_Int_Tables_number   1
_cell_volume   177.234
_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
  Co  Co0  1  0.821  0.821  0.750  1.0
  Co  Co1  1  0.179  0.179  0.250  1.0
  Li  Li2  1  0.319  0.681  0.500  1.0
  Li  Li3  1  0.681  0.319  1.000  1.0
  Li  Li4  1  0.813  0.813  0.250  1.0
  Li  Li5  1  0.187  0.187  0.750  1.0
  O  O6  1  0.198  0.805  0.784  1.0
  O  O7  1  0.195  0.802  0.216  1.0
  O  O8  1  0.802  0.195  0.284  1.0
  O  O9  1  0.805  0.198  0.716  1.0
  O  O10  1  0.634  0.708  0.999  1.0
  O  O11  1  0.292  0.366  0.001  1.0
  O  O12  1  0.708  0.634  0.501  1.0
  O  O13  1  0.366  0.292  0.499  1.0
  Si  Si14  1  0.324  0.676  1.000  1.0
  Si  Si15  1  0.676  0.324  0.500  1.0
[/CIF]
.