The structure described by Li9(CoO4)2 crystallizes in the monoclinic P2/m space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted LiO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Li(5)O4 tetrahedra, corners with four equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O4 tetrahedra, and edges with two equivalent Co(1)O4 tetrahedra. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(3), one O(5), and two equivalent O(1) atoms. In the third Li site, Li(3) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form distorted LiO4 trigonal pyramids that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(7)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Li(3)O4 trigonal pyramids,  an edgeedge with one Li(7)O6 octahedra,  an edgeedge with one Co(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 23-53°. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(3), one O(5), and two equivalent O(6) atoms. In the fifth Li site, Li(5) is bonded to one O(2), one O(3), and two equivalent O(6) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(7)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(5)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-40°. In the sixth Li site, Li(6) is bonded in a 3-coordinate geometry to one O(2), one O(4), and two equivalent O(6) atoms. In the seventh Li site, Li(7) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted LiO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Li(5)O4 tetrahedra, corners with four equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(7)O6 octahedra, edges with two equivalent Co(2)O4 tetrahedra, and edges with two equivalent Li(3)O4 trigonal pyramids. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form CoO4 tetrahedra that share corners with two equivalent Li(7)O6 octahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(1)O6 octahedra, and edges with two equivalent Li(3)O4 trigonal pyramids. The corner-sharing octahedral tilt angles are 56°. In the second Co site, Co(2) is bonded to one O(3), one O(5), and two equivalent O(6) atoms to form CoO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(7)O6 octahedra, and edges with two equivalent Li(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), two equivalent Li(3), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(6), two equivalent Li(1), two equivalent Li(5), and one Co(1) atom. In the third O site, O(3) is bonded in a 7-coordinate geometry to one Li(2), one Li(4), two equivalent Li(1), two equivalent Li(5), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Li(6), two equivalent Li(3), two equivalent Li(7), and one Co(1) atom. In the fifth O site, O(5) is bonded in a 7-coordinate geometry to one Li(2), one Li(4), two equivalent Li(3), two equivalent Li(7), and one Co(2) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Li(4), one Li(6), one Li(7), two equivalent Li(5), and one Co(2) atom. is represented by the CIF card [CIF]
data_Li9(CoO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.755
_cell_length_b   7.240
_cell_length_c   7.872
_cell_angle_alpha   88.681
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   384.892
_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  0.266  0.500  0.000  1.0
  Li  Li1  1  0.734  0.500  0.000  1.0
  Li  Li2  1  0.500  0.765  0.074  1.0
  Li  Li3  1  0.239  0.968  0.165  1.0
  Li  Li4  1  0.761  0.968  0.165  1.0
  Li  Li5  1  0.500  0.247  0.271  1.0
  Li  Li6  1  0.239  0.501  0.339  1.0
  Li  Li7  1  0.761  0.501  0.339  1.0
  Li  Li8  1  0.000  0.244  0.455  1.0
  Li  Li9  1  0.735  0.000  0.500  1.0
  Li  Li10  1  0.265  0.000  0.500  1.0
  Li  Li11  1  0.000  0.756  0.545  1.0
  Li  Li12  1  0.239  0.499  0.661  1.0
  Li  Li13  1  0.761  0.499  0.661  1.0
  Li  Li14  1  0.500  0.753  0.729  1.0
  Li  Li15  1  0.761  0.032  0.835  1.0
  Li  Li16  1  0.239  0.032  0.835  1.0
  Li  Li17  1  0.500  0.235  0.926  1.0
  Co  Co18  1  0.000  0.235  0.126  1.0
  Co  Co19  1  0.500  0.730  0.386  1.0
  Co  Co20  1  0.500  0.270  0.614  1.0
  Co  Co21  1  0.000  0.765  0.874  1.0
  O  O22  1  0.238  0.210  0.022  1.0
  O  O23  1  0.762  0.210  0.022  1.0
  O  O24  1  0.000  0.459  0.217  1.0
  O  O25  1  0.500  0.537  0.216  1.0
  O  O26  1  0.000  0.048  0.289  1.0
  O  O27  1  0.500  0.965  0.275  1.0
  O  O28  1  0.268  0.713  0.502  1.0
  O  O29  1  0.732  0.713  0.502  1.0
  O  O30  1  0.268  0.287  0.498  1.0
  O  O31  1  0.732  0.287  0.498  1.0
  O  O32  1  0.500  0.035  0.725  1.0
  O  O33  1  0.000  0.952  0.711  1.0
  O  O34  1  0.500  0.463  0.784  1.0
  O  O35  1  0.000  0.541  0.783  1.0
  O  O36  1  0.238  0.790  0.978  1.0
  O  O37  1  0.762  0.790  0.978  1.0
[/CIF]
.
The structure described by Li9(CoO4)2 crystallizes in the monoclinic P2/m space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted LiO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Li(5)O4 tetrahedra, corners with four equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O4 tetrahedra, and edges with two equivalent Co(1)O4 tetrahedra. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(3), one O(5), and two equivalent O(1) atoms. In the third Li site, Li(3) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form distorted LiO4 trigonal pyramids that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(7)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Li(3)O4 trigonal pyramids,  an edgeedge with one Li(7)O6 octahedra,  an edgeedge with one Co(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 23-53°. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(3), one O(5), and two equivalent O(6) atoms. In the fifth Li site, Li(5) is bonded to one O(2), one O(3), and two equivalent O(6) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(7)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(5)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-40°. In the sixth Li site, Li(6) is bonded in a 3-coordinate geometry to one O(2), one O(4), and two equivalent O(6) atoms. In the seventh Li site, Li(7) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted LiO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Li(5)O4 tetrahedra, corners with four equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(7)O6 octahedra, edges with two equivalent Co(2)O4 tetrahedra, and edges with two equivalent Li(3)O4 trigonal pyramids. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form CoO4 tetrahedra that share corners with two equivalent Li(7)O6 octahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(1)O6 octahedra, and edges with two equivalent Li(3)O4 trigonal pyramids. The corner-sharing octahedral tilt angles are 56°. In the second Co site, Co(2) is bonded to one O(3), one O(5), and two equivalent O(6) atoms to form CoO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(3)O4 trigonal pyramids, edges with two equivalent Li(7)O6 octahedra, and edges with two equivalent Li(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), two equivalent Li(3), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(6), two equivalent Li(1), two equivalent Li(5), and one Co(1) atom. In the third O site, O(3) is bonded in a 7-coordinate geometry to one Li(2), one Li(4), two equivalent Li(1), two equivalent Li(5), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Li(6), two equivalent Li(3), two equivalent Li(7), and one Co(1) atom. In the fifth O site, O(5) is bonded in a 7-coordinate geometry to one Li(2), one Li(4), two equivalent Li(3), two equivalent Li(7), and one Co(2) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Li(4), one Li(6), one Li(7), two equivalent Li(5), and one Co(2) atom. is represented by the CIF card [CIF]
data_Li9(CoO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.755
_cell_length_b   7.240
_cell_length_c   7.872
_cell_angle_alpha   88.681
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   384.892
_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  0.266  0.500  0.000  1.0
  Li  Li1  1  0.734  0.500  0.000  1.0
  Li  Li2  1  0.500  0.765  0.074  1.0
  Li  Li3  1  0.239  0.968  0.165  1.0
  Li  Li4  1  0.761  0.968  0.165  1.0
  Li  Li5  1  0.500  0.247  0.271  1.0
  Li  Li6  1  0.239  0.501  0.339  1.0
  Li  Li7  1  0.761  0.501  0.339  1.0
  Li  Li8  1  0.000  0.244  0.455  1.0
  Li  Li9  1  0.735  0.000  0.500  1.0
  Li  Li10  1  0.265  0.000  0.500  1.0
  Li  Li11  1  0.000  0.756  0.545  1.0
  Li  Li12  1  0.239  0.499  0.661  1.0
  Li  Li13  1  0.761  0.499  0.661  1.0
  Li  Li14  1  0.500  0.753  0.729  1.0
  Li  Li15  1  0.761  0.032  0.835  1.0
  Li  Li16  1  0.239  0.032  0.835  1.0
  Li  Li17  1  0.500  0.235  0.926  1.0
  Co  Co18  1  0.000  0.235  0.126  1.0
  Co  Co19  1  0.500  0.730  0.386  1.0
  Co  Co20  1  0.500  0.270  0.614  1.0
  Co  Co21  1  0.000  0.765  0.874  1.0
  O  O22  1  0.238  0.210  0.022  1.0
  O  O23  1  0.762  0.210  0.022  1.0
  O  O24  1  0.000  0.459  0.217  1.0
  O  O25  1  0.500  0.537  0.216  1.0
  O  O26  1  0.000  0.048  0.289  1.0
  O  O27  1  0.500  0.965  0.275  1.0
  O  O28  1  0.268  0.713  0.502  1.0
  O  O29  1  0.732  0.713  0.502  1.0
  O  O30  1  0.268  0.287  0.498  1.0
  O  O31  1  0.732  0.287  0.498  1.0
  O  O32  1  0.500  0.035  0.725  1.0
  O  O33  1  0.000  0.952  0.711  1.0
  O  O34  1  0.500  0.463  0.784  1.0
  O  O35  1  0.000  0.541  0.783  1.0
  O  O36  1  0.238  0.790  0.978  1.0
  O  O37  1  0.762  0.790  0.978  1.0
[/CIF]
.