The structure described by LiCo(SiO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with six equivalent Si(1)O4 tetrahedra and edges with two equivalent Co(1)O6 octahedra. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with three equivalent Co(1)O6 octahedra and corners with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 35-60°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Co(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLiCo2Si trigonal pyramids. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Li(1), one Co(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Li(1) and two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiCo(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.536
_cell_length_b   6.536
_cell_length_c   5.340
_cell_angle_alpha   75.078
_cell_angle_beta   75.078
_cell_angle_gamma   83.482
_symmetry_Int_Tables_number   1
_cell_volume   212.692
_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
  Li  Li0  1  0.741  0.259  0.750  1.0
  Li  Li1  1  0.259  0.741  0.250  1.0
  Co  Co2  1  0.900  0.100  0.250  1.0
  Co  Co3  1  0.100  0.900  0.750  1.0
  Si  Si4  1  0.794  0.615  0.265  1.0
  Si  Si5  1  0.615  0.794  0.765  1.0
  Si  Si6  1  0.385  0.206  0.235  1.0
  Si  Si7  1  0.206  0.385  0.735  1.0
  O  O8  1  0.971  0.797  0.151  1.0
  O  O9  1  0.888  0.371  0.328  1.0
  O  O10  1  0.797  0.971  0.651  1.0
  O  O11  1  0.641  0.648  0.057  1.0
  O  O12  1  0.629  0.112  0.172  1.0
  O  O13  1  0.648  0.641  0.557  1.0
  O  O14  1  0.352  0.359  0.443  1.0
  O  O15  1  0.371  0.888  0.828  1.0
  O  O16  1  0.359  0.352  0.943  1.0
  O  O17  1  0.203  0.029  0.349  1.0
  O  O18  1  0.112  0.629  0.672  1.0
  O  O19  1  0.029  0.203  0.849  1.0
[/CIF]
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The structure described by LiCo(SiO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with six equivalent Si(1)O4 tetrahedra and edges with two equivalent Co(1)O6 octahedra. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with three equivalent Co(1)O6 octahedra and corners with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 35-60°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), two equivalent Co(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLiCo2Si trigonal pyramids. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Li(1), one Co(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Li(1) and two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiCo(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.536
_cell_length_b   6.536
_cell_length_c   5.340
_cell_angle_alpha   75.078
_cell_angle_beta   75.078
_cell_angle_gamma   83.482
_symmetry_Int_Tables_number   1
_cell_volume   212.692
_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
  Li  Li0  1  0.741  0.259  0.750  1.0
  Li  Li1  1  0.259  0.741  0.250  1.0
  Co  Co2  1  0.900  0.100  0.250  1.0
  Co  Co3  1  0.100  0.900  0.750  1.0
  Si  Si4  1  0.794  0.615  0.265  1.0
  Si  Si5  1  0.615  0.794  0.765  1.0
  Si  Si6  1  0.385  0.206  0.235  1.0
  Si  Si7  1  0.206  0.385  0.735  1.0
  O  O8  1  0.971  0.797  0.151  1.0
  O  O9  1  0.888  0.371  0.328  1.0
  O  O10  1  0.797  0.971  0.651  1.0
  O  O11  1  0.641  0.648  0.057  1.0
  O  O12  1  0.629  0.112  0.172  1.0
  O  O13  1  0.648  0.641  0.557  1.0
  O  O14  1  0.352  0.359  0.443  1.0
  O  O15  1  0.371  0.888  0.828  1.0
  O  O16  1  0.359  0.352  0.943  1.0
  O  O17  1  0.203  0.029  0.349  1.0
  O  O18  1  0.112  0.629  0.672  1.0
  O  O19  1  0.029  0.203  0.849  1.0
[/CIF]
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