The material structure described by Co2SiO4 is Ilmenite-like structured and crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-62°. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-62°. In the third Co site, Co(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-62°. 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  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(2), one Co(3), and one Si(1) atom to form distorted corner-sharing OCo3Si trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(3), two equivalent Co(1), and one Si(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(3), and one Si(1) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Co2SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.226
_cell_length_b   4.785
_cell_length_c   7.631
_cell_angle_alpha   51.483
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   292.123
_cell_formula_units_Z   4
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  0.726  0.760  0.747  1.0
  Co  Co1  1  0.500  0.000  0.000  1.0
  Co  Co2  1  0.774  0.760  0.247  1.0
  Co  Co3  1  0.226  0.240  0.753  1.0
  Co  Co4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.274  0.240  0.253  1.0
  Co  Co6  1  0.500  0.500  0.500  1.0
  Co  Co7  1  0.000  0.500  0.000  1.0
  Si  Si8  1  0.406  0.679  0.750  1.0
  Si  Si9  1  0.594  0.321  0.250  1.0
  Si  Si10  1  0.094  0.679  0.250  1.0
  Si  Si11  1  0.906  0.321  0.750  1.0
  O  O12  1  0.908  0.982  0.750  1.0
  O  O13  1  0.165  0.750  0.033  1.0
  O  O14  1  0.947  0.539  0.249  1.0
  O  O15  1  0.053  0.461  0.751  1.0
  O  O16  1  0.835  0.250  0.967  1.0
  O  O17  1  0.553  0.539  0.749  1.0
  O  O18  1  0.837  0.688  0.531  1.0
  O  O19  1  0.163  0.312  0.469  1.0
  O  O20  1  0.408  0.018  0.750  1.0
  O  O21  1  0.337  0.312  0.969  1.0
  O  O22  1  0.663  0.688  0.031  1.0
  O  O23  1  0.447  0.461  0.251  1.0
  O  O24  1  0.335  0.750  0.533  1.0
  O  O25  1  0.092  0.018  0.250  1.0
  O  O26  1  0.592  0.982  0.250  1.0
  O  O27  1  0.665  0.250  0.467  1.0
[/CIF]
.
The material structure described by Co2SiO4 is Ilmenite-like structured and crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-62°. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-62°. In the third Co site, Co(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with four equivalent Co(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-62°. 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  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(2), one Co(3), and one Si(1) atom to form distorted corner-sharing OCo3Si trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(3), two equivalent Co(1), and one Si(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(3), and one Si(1) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Co2SiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.226
_cell_length_b   4.785
_cell_length_c   7.631
_cell_angle_alpha   51.483
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   292.123
_cell_formula_units_Z   4
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  0.726  0.760  0.747  1.0
  Co  Co1  1  0.500  0.000  0.000  1.0
  Co  Co2  1  0.774  0.760  0.247  1.0
  Co  Co3  1  0.226  0.240  0.753  1.0
  Co  Co4  1  0.000  0.000  0.500  1.0
  Co  Co5  1  0.274  0.240  0.253  1.0
  Co  Co6  1  0.500  0.500  0.500  1.0
  Co  Co7  1  0.000  0.500  0.000  1.0
  Si  Si8  1  0.406  0.679  0.750  1.0
  Si  Si9  1  0.594  0.321  0.250  1.0
  Si  Si10  1  0.094  0.679  0.250  1.0
  Si  Si11  1  0.906  0.321  0.750  1.0
  O  O12  1  0.908  0.982  0.750  1.0
  O  O13  1  0.165  0.750  0.033  1.0
  O  O14  1  0.947  0.539  0.249  1.0
  O  O15  1  0.053  0.461  0.751  1.0
  O  O16  1  0.835  0.250  0.967  1.0
  O  O17  1  0.553  0.539  0.749  1.0
  O  O18  1  0.837  0.688  0.531  1.0
  O  O19  1  0.163  0.312  0.469  1.0
  O  O20  1  0.408  0.018  0.750  1.0
  O  O21  1  0.337  0.312  0.969  1.0
  O  O22  1  0.663  0.688  0.031  1.0
  O  O23  1  0.447  0.461  0.251  1.0
  O  O24  1  0.335  0.750  0.533  1.0
  O  O25  1  0.092  0.018  0.250  1.0
  O  O26  1  0.592  0.982  0.250  1.0
  O  O27  1  0.665  0.250  0.467  1.0
[/CIF]
.