The compound described by Li2CoSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic Pnma space group. Li(1) is bonded to one O(2), one O(3), and two equivalent O(1) 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 one O(2), one O(3), and two equivalent O(1) atoms to form CoO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Li(1)O4 tetrahedra. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form SiO4 tetrahedra that share corners with four equivalent Co(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Co(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2CoSi 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 corner-sharing OLi2CoSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Co(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2CoSi trigonal pyramids. is represented by the CIF file [CIF]
data_Li2CoSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.015
_cell_length_b   6.138
_cell_length_c   10.726
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   330.186
_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
  Li  Li0  1  0.200  0.995  0.669  1.0
  Li  Li1  1  0.300  0.995  0.169  1.0
  Li  Li2  1  0.200  0.505  0.669  1.0
  Li  Li3  1  0.300  0.505  0.169  1.0
  Li  Li4  1  0.700  0.495  0.831  1.0
  Li  Li5  1  0.800  0.495  0.331  1.0
  Li  Li6  1  0.800  0.005  0.331  1.0
  Li  Li7  1  0.700  0.005  0.831  1.0
  Co  Co8  1  0.807  0.250  0.577  1.0
  Co  Co9  1  0.693  0.250  0.077  1.0
  Co  Co10  1  0.307  0.750  0.923  1.0
  Co  Co11  1  0.193  0.750  0.423  1.0
  Si  Si12  1  0.190  0.250  0.914  1.0
  Si  Si13  1  0.310  0.250  0.414  1.0
  Si  Si14  1  0.690  0.750  0.586  1.0
  Si  Si15  1  0.810  0.750  0.086  1.0
  O  O16  1  0.299  0.034  0.840  1.0
  O  O17  1  0.201  0.034  0.340  1.0
  O  O18  1  0.863  0.250  0.913  1.0
  O  O19  1  0.208  0.250  0.559  1.0
  O  O20  1  0.292  0.250  0.059  1.0
  O  O21  1  0.637  0.250  0.413  1.0
  O  O22  1  0.299  0.466  0.840  1.0
  O  O23  1  0.201  0.466  0.340  1.0
  O  O24  1  0.701  0.534  0.160  1.0
  O  O25  1  0.799  0.534  0.660  1.0
  O  O26  1  0.708  0.750  0.941  1.0
  O  O27  1  0.363  0.750  0.587  1.0
  O  O28  1  0.792  0.750  0.441  1.0
  O  O29  1  0.137  0.750  0.087  1.0
  O  O30  1  0.799  0.966  0.660  1.0
  O  O31  1  0.701  0.966  0.160  1.0
[/CIF]
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The compound described by Li2CoSiO4 is beta beryllia-derived structured and crystallizes in the orthorhombic Pnma space group. Li(1) is bonded to one O(2), one O(3), and two equivalent O(1) 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 one O(2), one O(3), and two equivalent O(1) atoms to form CoO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Si(1)O4 tetrahedra, and edges with two equivalent Li(1)O4 tetrahedra. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form SiO4 tetrahedra that share corners with four equivalent Co(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Co(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2CoSi 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 corner-sharing OLi2CoSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Co(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2CoSi trigonal pyramids. is represented by the CIF file [CIF]
data_Li2CoSiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.015
_cell_length_b   6.138
_cell_length_c   10.726
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   330.186
_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
  Li  Li0  1  0.200  0.995  0.669  1.0
  Li  Li1  1  0.300  0.995  0.169  1.0
  Li  Li2  1  0.200  0.505  0.669  1.0
  Li  Li3  1  0.300  0.505  0.169  1.0
  Li  Li4  1  0.700  0.495  0.831  1.0
  Li  Li5  1  0.800  0.495  0.331  1.0
  Li  Li6  1  0.800  0.005  0.331  1.0
  Li  Li7  1  0.700  0.005  0.831  1.0
  Co  Co8  1  0.807  0.250  0.577  1.0
  Co  Co9  1  0.693  0.250  0.077  1.0
  Co  Co10  1  0.307  0.750  0.923  1.0
  Co  Co11  1  0.193  0.750  0.423  1.0
  Si  Si12  1  0.190  0.250  0.914  1.0
  Si  Si13  1  0.310  0.250  0.414  1.0
  Si  Si14  1  0.690  0.750  0.586  1.0
  Si  Si15  1  0.810  0.750  0.086  1.0
  O  O16  1  0.299  0.034  0.840  1.0
  O  O17  1  0.201  0.034  0.340  1.0
  O  O18  1  0.863  0.250  0.913  1.0
  O  O19  1  0.208  0.250  0.559  1.0
  O  O20  1  0.292  0.250  0.059  1.0
  O  O21  1  0.637  0.250  0.413  1.0
  O  O22  1  0.299  0.466  0.840  1.0
  O  O23  1  0.201  0.466  0.340  1.0
  O  O24  1  0.701  0.534  0.160  1.0
  O  O25  1  0.799  0.534  0.660  1.0
  O  O26  1  0.708  0.750  0.941  1.0
  O  O27  1  0.363  0.750  0.587  1.0
  O  O28  1  0.792  0.750  0.441  1.0
  O  O29  1  0.137  0.750  0.087  1.0
  O  O30  1  0.799  0.966  0.660  1.0
  O  O31  1  0.701  0.966  0.160  1.0
[/CIF]
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