The compound described by Li2Co4OF8 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one F(1), one F(2), one F(5), and one F(7) atom to form LiF4 tetrahedra that share corners with two equivalent Co(3)OF5 octahedra and corners with two equivalent Co(4)OF5 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 61-64°. In the second Li site, Li(2) is bonded to one F(3), one F(4), one F(6), and one F(8) atom to form LiF4 trigonal pyramids that share corners with three equivalent Co(3)OF5 octahedra,  a cornercorner with one Co(4)OF5 pentagonal pyramid, and  an edgeedge with one Co(4)OF5 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 44-68°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(1), one F(2), one F(3), one F(4), and one F(5) atom. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to one O(1), one F(2), one F(6), and one F(7) atom. In the third Co site, Co(3) is bonded to one O(1), one F(3), one F(6), one F(8), and two equivalent F(1) atoms to form distorted CoOF5 octahedra that share  a cornercorner with one Co(4)OF5 pentagonal pyramid, corners with two equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)F4 trigonal pyramids,  an edgeedge with one Co(3)OF5 octahedra, and  an edgeedge with one Co(4)OF5 pentagonal pyramid. In the fourth Co site, Co(4) is bonded to one O(1), one F(3), one F(4), one F(5), one F(7), and one F(8) atom to form distorted CoOF5 pentagonal pyramids that share  a cornercorner with one Co(3)OF5 octahedra, corners with two equivalent Li(1)F4 tetrahedra,  a cornercorner with one Li(2)F4 trigonal pyramid,  an edgeedge with one Co(3)OF5 octahedra, and  an edgeedge with one Li(2)F4 trigonal pyramid. The corner-sharing octahedral tilt angles are 57°. O(1) is bonded in a tetrahedral geometry to one Co(1), one Co(2), one Co(3), and one Co(4) atom. There are eight inequivalent F sites. In the first F site, F(1) is bonded in a trigonal non-coplanar geometry to one Li(1) and two equivalent Co(3) atoms. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one Co(2) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Li(2), one Co(1), one Co(3), and one Co(4) atom. In the fourth F site, F(4) is bonded in a trigonal non-coplanar geometry to one Li(2), one Co(1), and one Co(4) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one Co(4) atom. In the sixth F site, F(6) is bonded in a trigonal planar geometry to one Li(2), one Co(2), and one Co(3) atom. In the seventh F site, F(7) is bonded in a 3-coordinate geometry to one Li(1), one Co(2), and one Co(4) atom. In the eighth F site, F(8) is bonded in a 3-coordinate geometry to one Li(2), one Co(3), and one Co(4) atom. is represented by the CIF file [CIF]
data_Li2Co4OF8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.856
_cell_length_b   7.815
_cell_length_c   8.393
_cell_angle_alpha   69.431
_cell_angle_beta   66.961
_cell_angle_gamma   80.040
_symmetry_Int_Tables_number   1
_cell_volume   387.057
_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  0.237  0.236  0.629  1.0
  Li  Li1  1  0.387  0.737  0.088  1.0
  Li  Li2  1  0.613  0.263  0.912  1.0
  Li  Li3  1  0.763  0.764  0.371  1.0
  Co  Co4  1  0.677  0.407  0.250  1.0
  Co  Co5  1  0.213  0.900  0.458  1.0
  Co  Co6  1  0.946  0.874  0.915  1.0
  Co  Co7  1  0.861  0.605  0.767  1.0
  Co  Co8  1  0.139  0.395  0.233  1.0
  Co  Co9  1  0.054  0.126  0.085  1.0
  Co  Co10  1  0.787  0.100  0.542  1.0
  Co  Co11  1  0.323  0.593  0.750  1.0
  O  O12  1  0.084  0.775  0.717  1.0
  O  O13  1  0.916  0.225  0.283  1.0
  F  F14  1  0.828  0.948  0.142  1.0
  F  F15  1  0.472  0.755  0.480  1.0
  F  F16  1  0.782  0.356  0.002  1.0
  F  F17  1  0.378  0.495  0.258  1.0
  F  F18  1  0.141  0.449  0.694  1.0
  F  F19  1  0.234  0.906  0.216  1.0
  F  F20  1  0.181  0.161  0.457  1.0
  F  F21  1  0.306  0.288  0.013  1.0
  F  F22  1  0.694  0.712  0.987  1.0
  F  F23  1  0.819  0.839  0.543  1.0
  F  F24  1  0.766  0.094  0.784  1.0
  F  F25  1  0.859  0.551  0.306  1.0
  F  F26  1  0.622  0.505  0.742  1.0
  F  F27  1  0.218  0.644  0.998  1.0
  F  F28  1  0.528  0.245  0.520  1.0
  F  F29  1  0.172  0.052  0.858  1.0
[/CIF]
.
The compound described by Li2Co4OF8 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one F(1), one F(2), one F(5), and one F(7) atom to form LiF4 tetrahedra that share corners with two equivalent Co(3)OF5 octahedra and corners with two equivalent Co(4)OF5 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 61-64°. In the second Li site, Li(2) is bonded to one F(3), one F(4), one F(6), and one F(8) atom to form LiF4 trigonal pyramids that share corners with three equivalent Co(3)OF5 octahedra,  a cornercorner with one Co(4)OF5 pentagonal pyramid, and  an edgeedge with one Co(4)OF5 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 44-68°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(1), one F(2), one F(3), one F(4), and one F(5) atom. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to one O(1), one F(2), one F(6), and one F(7) atom. In the third Co site, Co(3) is bonded to one O(1), one F(3), one F(6), one F(8), and two equivalent F(1) atoms to form distorted CoOF5 octahedra that share  a cornercorner with one Co(4)OF5 pentagonal pyramid, corners with two equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)F4 trigonal pyramids,  an edgeedge with one Co(3)OF5 octahedra, and  an edgeedge with one Co(4)OF5 pentagonal pyramid. In the fourth Co site, Co(4) is bonded to one O(1), one F(3), one F(4), one F(5), one F(7), and one F(8) atom to form distorted CoOF5 pentagonal pyramids that share  a cornercorner with one Co(3)OF5 octahedra, corners with two equivalent Li(1)F4 tetrahedra,  a cornercorner with one Li(2)F4 trigonal pyramid,  an edgeedge with one Co(3)OF5 octahedra, and  an edgeedge with one Li(2)F4 trigonal pyramid. The corner-sharing octahedral tilt angles are 57°. O(1) is bonded in a tetrahedral geometry to one Co(1), one Co(2), one Co(3), and one Co(4) atom. There are eight inequivalent F sites. In the first F site, F(1) is bonded in a trigonal non-coplanar geometry to one Li(1) and two equivalent Co(3) atoms. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one Co(2) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Li(2), one Co(1), one Co(3), and one Co(4) atom. In the fourth F site, F(4) is bonded in a trigonal non-coplanar geometry to one Li(2), one Co(1), and one Co(4) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one Co(4) atom. In the sixth F site, F(6) is bonded in a trigonal planar geometry to one Li(2), one Co(2), and one Co(3) atom. In the seventh F site, F(7) is bonded in a 3-coordinate geometry to one Li(1), one Co(2), and one Co(4) atom. In the eighth F site, F(8) is bonded in a 3-coordinate geometry to one Li(2), one Co(3), and one Co(4) atom. is represented by the CIF file [CIF]
data_Li2Co4OF8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.856
_cell_length_b   7.815
_cell_length_c   8.393
_cell_angle_alpha   69.431
_cell_angle_beta   66.961
_cell_angle_gamma   80.040
_symmetry_Int_Tables_number   1
_cell_volume   387.057
_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  0.237  0.236  0.629  1.0
  Li  Li1  1  0.387  0.737  0.088  1.0
  Li  Li2  1  0.613  0.263  0.912  1.0
  Li  Li3  1  0.763  0.764  0.371  1.0
  Co  Co4  1  0.677  0.407  0.250  1.0
  Co  Co5  1  0.213  0.900  0.458  1.0
  Co  Co6  1  0.946  0.874  0.915  1.0
  Co  Co7  1  0.861  0.605  0.767  1.0
  Co  Co8  1  0.139  0.395  0.233  1.0
  Co  Co9  1  0.054  0.126  0.085  1.0
  Co  Co10  1  0.787  0.100  0.542  1.0
  Co  Co11  1  0.323  0.593  0.750  1.0
  O  O12  1  0.084  0.775  0.717  1.0
  O  O13  1  0.916  0.225  0.283  1.0
  F  F14  1  0.828  0.948  0.142  1.0
  F  F15  1  0.472  0.755  0.480  1.0
  F  F16  1  0.782  0.356  0.002  1.0
  F  F17  1  0.378  0.495  0.258  1.0
  F  F18  1  0.141  0.449  0.694  1.0
  F  F19  1  0.234  0.906  0.216  1.0
  F  F20  1  0.181  0.161  0.457  1.0
  F  F21  1  0.306  0.288  0.013  1.0
  F  F22  1  0.694  0.712  0.987  1.0
  F  F23  1  0.819  0.839  0.543  1.0
  F  F24  1  0.766  0.094  0.784  1.0
  F  F25  1  0.859  0.551  0.306  1.0
  F  F26  1  0.622  0.505  0.742  1.0
  F  F27  1  0.218  0.644  0.998  1.0
  F  F28  1  0.528  0.245  0.520  1.0
  F  F29  1  0.172  0.052  0.858  1.0
[/CIF]
.