The structure described by Li7Co(O2F)2 crystallizes in the triclinic P1 space group. There are fourteen inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(3), one F(1), and one F(4) atom to form LiO2F2 trigonal pyramids that share  a cornercorner with one Li(10)O3F tetrahedra,  a cornercorner with one Co(1)O4 tetrahedra, corners with two equivalent Li(3)O3F tetrahedra, and corners with two equivalent Li(8)O2F2 trigonal pyramids. In the second Li site, Li(2) is bonded to one O(2), one O(4), one O(5), and one F(3) atom to form LiO3F tetrahedra that share corners with two equivalent Li(7)O4F square pyramids,  a cornercorner with one Li(3)O3F tetrahedra, corners with two equivalent Li(10)O3F tetrahedra, corners with two equivalent Co(1)O4 tetrahedra,  a cornercorner with one Li(8)O2F2 trigonal pyramid,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(13)O3F tetrahedra,  an edgeedge with one Li(6)O3F tetrahedra, and  an edgeedge with one Li(11)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(1), one O(4), one O(6), and one F(4) atom to form distorted LiO3F tetrahedra that share  a cornercorner with one Li(7)O4F square pyramid,  a cornercorner with one Li(2)O3F tetrahedra,  a cornercorner with one Li(8)O2F2 trigonal pyramid, corners with two equivalent Li(1)O2F2 trigonal pyramids, and  an edgeedge with one Li(11)O4 tetrahedra. In the fourth Li site, Li(4) is bonded in a 3-coordinate geometry to one O(7), one F(1), and one F(2) atom. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to one O(1), one O(6), one O(8), and one F(1) atom. In the sixth Li site, Li(6) is bonded to one O(2), one O(5), one O(7), and one F(2) atom to form distorted LiO3F tetrahedra that share corners with two equivalent Li(7)O4F square pyramids,  a cornercorner with one Li(11)O4 tetrahedra, corners with two equivalent Li(13)O3F tetrahedra, corners with three equivalent Co(1)O4 tetrahedra,  an edgeedge with one Li(10)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Li(8)O2F2 trigonal pyramid. In the seventh Li site, Li(7) is bonded to one O(2), one O(4), one O(5), one O(8), and one F(3) atom to form distorted LiO4F square pyramids that share  a cornercorner with one Li(13)O3F tetrahedra,  a cornercorner with one Li(3)O3F tetrahedra, corners with two equivalent Li(2)O3F tetrahedra, corners with two equivalent Li(6)O3F tetrahedra, corners with three equivalent Li(11)O4 tetrahedra,  a cornercorner with one Li(8)O2F2 trigonal pyramid,  an edgeedge with one Li(10)O3F tetrahedra,  an edgeedge with one Li(13)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(3), one O(5), one F(2), and one F(4) atom to form distorted LiO2F2 trigonal pyramids that share  a cornercorner with one Li(7)O4F square pyramid,  a cornercorner with one Li(2)O3F tetrahedra,  a cornercorner with one Li(3)O3F tetrahedra, corners with two equivalent Li(10)O3F tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Li(1)O2F2 trigonal pyramids, and  an edgeedge with one Li(6)O3F tetrahedra. In the ninth Li site, Li(9) is bonded in a 4-coordinate geometry to one O(1), one O(4), one O(8), and one F(3) atom. In the tenth Li site, Li(10) is bonded to one O(3), one O(5), one O(7), and one F(3) atom to form distorted LiO3F tetrahedra that share  a cornercorner with one Co(1)O4 tetrahedra, corners with two equivalent Li(2)O3F tetrahedra,  a cornercorner with one Li(1)O2F2 trigonal pyramid, corners with two equivalent Li(8)O2F2 trigonal pyramids,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(13)O3F tetrahedra,  an edgeedge with one Li(6)O3F tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the eleventh Li site, Li(11) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form LiO4 tetrahedra that share corners with three equivalent Li(7)O4F square pyramids,  a cornercorner with one Li(6)O3F tetrahedra,  a cornercorner with one Co(1)O4 tetrahedra, corners with two equivalent Li(13)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Li(3)O3F tetrahedra. In the twelfth Li site, Li(12) is bonded in a 4-coordinate geometry to one O(6), one F(1), one F(2), and one F(4) atom. In the thirteenth Li site, Li(13) is bonded to one O(2), one O(7), one O(8), and one F(3) atom to form distorted LiO3F tetrahedra that share  a cornercorner with one Li(7)O4F square pyramid, corners with two equivalent Li(6)O3F tetrahedra, corners with two equivalent Li(11)O4 tetrahedra,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(10)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the fourteenth Li site, Li(14) is bonded in a 3-coordinate geometry to one O(2), one O(5), one O(7), one O(8), and one F(3) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form distorted CoO4 tetrahedra that share  a cornercorner with one Li(10)O3F tetrahedra,  a cornercorner with one Li(11)O4 tetrahedra, corners with two equivalent Li(2)O3F tetrahedra, corners with three equivalent Li(6)O3F tetrahedra,  a cornercorner with one Li(1)O2F2 trigonal pyramid, corners with two equivalent Li(8)O2F2 trigonal pyramids,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(10)O3F tetrahedra, and  an edgeedge with one Li(13)O3F tetrahedra. In the second Co site, Co(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(4), one O(6), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(3), one Li(5), one Li(9), and one Co(2) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Li(11), one Li(13), one Li(14), one Li(2), one Li(6), one Li(7), and one Co(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Li(10), one Li(8), and one Co(1) atom. In the fourth O site, O(4) is bonded to one Li(11), one Li(2), one Li(3), one Li(7), one Li(9), and one Co(2) atom to form distorted OLi5Co pentagonal pyramids that share  a cornercorner with one F(4)Li4 trigonal pyramid. In the fifth O site, O(5) is bonded in a 7-coordinate geometry to one Li(10), one Li(14), one Li(2), one Li(6), one Li(7), one Li(8), and one Co(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Li(11), one Li(12), one Li(3), one Li(5), and one Co(2) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Li(10), one Li(13), one Li(14), one Li(4), one Li(6), and one Co(1) atom. In the eighth O site, O(8) is bonded in a 7-coordinate geometry to one Li(11), one Li(13), one Li(14), one Li(5), one Li(7), one Li(9), and one Co(2) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded to one Li(1), one Li(12), one Li(4), and one Li(5) atom to form a mixture of corner and edge-sharing FLi4 trigonal pyramids. In the second F site, F(2) is bonded to one Li(12), one Li(4), one Li(6), and one Li(8) atom to form a mixture of corner and edge-sharing FLi4 trigonal pyramids. In the third F site, F(3) is bonded in a 6-coordinate geometry to one Li(10), one Li(13), one Li(14), one Li(2), one Li(7), and one Li(9) atom. In the fourth F site, F(4) is bonded to one Li(1), one Li(12), one Li(3), and one Li(8) atom to form FLi4 trigonal pyramids that share  a cornercorner with one O(4)Li5Co pentagonal pyramid,  an edgeedge with one F(1)Li4 trigonal pyramid, and  an edgeedge with one F(2)Li4 trigonal pyramid. is represented by the CIF card [CIF]
data_Li7Co(O2F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.347
_cell_length_b   5.970
_cell_length_c   10.314
_cell_angle_alpha   82.541
_cell_angle_beta   80.546
_cell_angle_gamma   119.614
_symmetry_Int_Tables_number   1
_cell_volume   273.660
_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  0.087  0.033  0.232  1.0
  Li  Li1  1  0.103  0.633  0.742  1.0
  Li  Li2  1  0.479  0.944  0.388  1.0
  Li  Li3  1  0.549  0.582  0.122  1.0
  Li  Li4  1  0.266  0.223  0.443  1.0
  Li  Li5  1  0.228  0.712  0.957  1.0
  Li  Li6  1  0.306  0.357  0.678  1.0
  Li  Li7  1  0.722  0.236  0.063  1.0
  Li  Li8  1  0.753  0.781  0.531  1.0
  Li  Li9  1  0.479  0.497  0.897  1.0
  Li  Li10  1  0.524  0.034  0.614  1.0
  Li  Li11  1  0.923  0.437  0.278  1.0
  Li  Li12  1  0.897  0.906  0.746  1.0
  Li  Li13  1  0.672  0.151  0.828  1.0
  Co  Co14  1  0.055  0.050  0.948  1.0
  Co  Co15  1  0.002  0.496  0.508  1.0
  O  O16  1  0.074  0.818  0.404  1.0
  O  O17  1  0.258  0.975  0.795  1.0
  O  O18  1  0.345  0.180  0.036  1.0
  O  O19  1  0.349  0.684  0.565  1.0
  O  O20  1  0.066  0.376  0.882  1.0
  O  O21  1  0.651  0.306  0.459  1.0
  O  O22  1  0.656  0.829  0.944  1.0
  O  O23  1  0.942  0.167  0.607  1.0
  F  F24  1  0.256  0.392  0.279  1.0
  F  F25  1  0.905  0.584  0.112  1.0
  F  F26  1  0.710  0.564  0.723  1.0
  F  F27  1  0.741  0.052  0.219  1.0
[/CIF]
.
The structure described by Li7Co(O2F)2 crystallizes in the triclinic P1 space group. There are fourteen inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(3), one F(1), and one F(4) atom to form LiO2F2 trigonal pyramids that share  a cornercorner with one Li(10)O3F tetrahedra,  a cornercorner with one Co(1)O4 tetrahedra, corners with two equivalent Li(3)O3F tetrahedra, and corners with two equivalent Li(8)O2F2 trigonal pyramids. In the second Li site, Li(2) is bonded to one O(2), one O(4), one O(5), and one F(3) atom to form LiO3F tetrahedra that share corners with two equivalent Li(7)O4F square pyramids,  a cornercorner with one Li(3)O3F tetrahedra, corners with two equivalent Li(10)O3F tetrahedra, corners with two equivalent Co(1)O4 tetrahedra,  a cornercorner with one Li(8)O2F2 trigonal pyramid,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(13)O3F tetrahedra,  an edgeedge with one Li(6)O3F tetrahedra, and  an edgeedge with one Li(11)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(1), one O(4), one O(6), and one F(4) atom to form distorted LiO3F tetrahedra that share  a cornercorner with one Li(7)O4F square pyramid,  a cornercorner with one Li(2)O3F tetrahedra,  a cornercorner with one Li(8)O2F2 trigonal pyramid, corners with two equivalent Li(1)O2F2 trigonal pyramids, and  an edgeedge with one Li(11)O4 tetrahedra. In the fourth Li site, Li(4) is bonded in a 3-coordinate geometry to one O(7), one F(1), and one F(2) atom. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to one O(1), one O(6), one O(8), and one F(1) atom. In the sixth Li site, Li(6) is bonded to one O(2), one O(5), one O(7), and one F(2) atom to form distorted LiO3F tetrahedra that share corners with two equivalent Li(7)O4F square pyramids,  a cornercorner with one Li(11)O4 tetrahedra, corners with two equivalent Li(13)O3F tetrahedra, corners with three equivalent Co(1)O4 tetrahedra,  an edgeedge with one Li(10)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Li(8)O2F2 trigonal pyramid. In the seventh Li site, Li(7) is bonded to one O(2), one O(4), one O(5), one O(8), and one F(3) atom to form distorted LiO4F square pyramids that share  a cornercorner with one Li(13)O3F tetrahedra,  a cornercorner with one Li(3)O3F tetrahedra, corners with two equivalent Li(2)O3F tetrahedra, corners with two equivalent Li(6)O3F tetrahedra, corners with three equivalent Li(11)O4 tetrahedra,  a cornercorner with one Li(8)O2F2 trigonal pyramid,  an edgeedge with one Li(10)O3F tetrahedra,  an edgeedge with one Li(13)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(3), one O(5), one F(2), and one F(4) atom to form distorted LiO2F2 trigonal pyramids that share  a cornercorner with one Li(7)O4F square pyramid,  a cornercorner with one Li(2)O3F tetrahedra,  a cornercorner with one Li(3)O3F tetrahedra, corners with two equivalent Li(10)O3F tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Li(1)O2F2 trigonal pyramids, and  an edgeedge with one Li(6)O3F tetrahedra. In the ninth Li site, Li(9) is bonded in a 4-coordinate geometry to one O(1), one O(4), one O(8), and one F(3) atom. In the tenth Li site, Li(10) is bonded to one O(3), one O(5), one O(7), and one F(3) atom to form distorted LiO3F tetrahedra that share  a cornercorner with one Co(1)O4 tetrahedra, corners with two equivalent Li(2)O3F tetrahedra,  a cornercorner with one Li(1)O2F2 trigonal pyramid, corners with two equivalent Li(8)O2F2 trigonal pyramids,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(13)O3F tetrahedra,  an edgeedge with one Li(6)O3F tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the eleventh Li site, Li(11) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form LiO4 tetrahedra that share corners with three equivalent Li(7)O4F square pyramids,  a cornercorner with one Li(6)O3F tetrahedra,  a cornercorner with one Co(1)O4 tetrahedra, corners with two equivalent Li(13)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Li(3)O3F tetrahedra. In the twelfth Li site, Li(12) is bonded in a 4-coordinate geometry to one O(6), one F(1), one F(2), and one F(4) atom. In the thirteenth Li site, Li(13) is bonded to one O(2), one O(7), one O(8), and one F(3) atom to form distorted LiO3F tetrahedra that share  a cornercorner with one Li(7)O4F square pyramid, corners with two equivalent Li(6)O3F tetrahedra, corners with two equivalent Li(11)O4 tetrahedra,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(10)O3F tetrahedra,  an edgeedge with one Li(2)O3F tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. In the fourteenth Li site, Li(14) is bonded in a 3-coordinate geometry to one O(2), one O(5), one O(7), one O(8), and one F(3) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form distorted CoO4 tetrahedra that share  a cornercorner with one Li(10)O3F tetrahedra,  a cornercorner with one Li(11)O4 tetrahedra, corners with two equivalent Li(2)O3F tetrahedra, corners with three equivalent Li(6)O3F tetrahedra,  a cornercorner with one Li(1)O2F2 trigonal pyramid, corners with two equivalent Li(8)O2F2 trigonal pyramids,  an edgeedge with one Li(7)O4F square pyramid,  an edgeedge with one Li(10)O3F tetrahedra, and  an edgeedge with one Li(13)O3F tetrahedra. In the second Co site, Co(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(4), one O(6), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(3), one Li(5), one Li(9), and one Co(2) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Li(11), one Li(13), one Li(14), one Li(2), one Li(6), one Li(7), and one Co(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Li(10), one Li(8), and one Co(1) atom. In the fourth O site, O(4) is bonded to one Li(11), one Li(2), one Li(3), one Li(7), one Li(9), and one Co(2) atom to form distorted OLi5Co pentagonal pyramids that share  a cornercorner with one F(4)Li4 trigonal pyramid. In the fifth O site, O(5) is bonded in a 7-coordinate geometry to one Li(10), one Li(14), one Li(2), one Li(6), one Li(7), one Li(8), and one Co(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Li(11), one Li(12), one Li(3), one Li(5), and one Co(2) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Li(10), one Li(13), one Li(14), one Li(4), one Li(6), and one Co(1) atom. In the eighth O site, O(8) is bonded in a 7-coordinate geometry to one Li(11), one Li(13), one Li(14), one Li(5), one Li(7), one Li(9), and one Co(2) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded to one Li(1), one Li(12), one Li(4), and one Li(5) atom to form a mixture of corner and edge-sharing FLi4 trigonal pyramids. In the second F site, F(2) is bonded to one Li(12), one Li(4), one Li(6), and one Li(8) atom to form a mixture of corner and edge-sharing FLi4 trigonal pyramids. In the third F site, F(3) is bonded in a 6-coordinate geometry to one Li(10), one Li(13), one Li(14), one Li(2), one Li(7), and one Li(9) atom. In the fourth F site, F(4) is bonded to one Li(1), one Li(12), one Li(3), and one Li(8) atom to form FLi4 trigonal pyramids that share  a cornercorner with one O(4)Li5Co pentagonal pyramid,  an edgeedge with one F(1)Li4 trigonal pyramid, and  an edgeedge with one F(2)Li4 trigonal pyramid. is represented by the CIF card [CIF]
data_Li7Co(O2F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.347
_cell_length_b   5.970
_cell_length_c   10.314
_cell_angle_alpha   82.541
_cell_angle_beta   80.546
_cell_angle_gamma   119.614
_symmetry_Int_Tables_number   1
_cell_volume   273.660
_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  0.087  0.033  0.232  1.0
  Li  Li1  1  0.103  0.633  0.742  1.0
  Li  Li2  1  0.479  0.944  0.388  1.0
  Li  Li3  1  0.549  0.582  0.122  1.0
  Li  Li4  1  0.266  0.223  0.443  1.0
  Li  Li5  1  0.228  0.712  0.957  1.0
  Li  Li6  1  0.306  0.357  0.678  1.0
  Li  Li7  1  0.722  0.236  0.063  1.0
  Li  Li8  1  0.753  0.781  0.531  1.0
  Li  Li9  1  0.479  0.497  0.897  1.0
  Li  Li10  1  0.524  0.034  0.614  1.0
  Li  Li11  1  0.923  0.437  0.278  1.0
  Li  Li12  1  0.897  0.906  0.746  1.0
  Li  Li13  1  0.672  0.151  0.828  1.0
  Co  Co14  1  0.055  0.050  0.948  1.0
  Co  Co15  1  0.002  0.496  0.508  1.0
  O  O16  1  0.074  0.818  0.404  1.0
  O  O17  1  0.258  0.975  0.795  1.0
  O  O18  1  0.345  0.180  0.036  1.0
  O  O19  1  0.349  0.684  0.565  1.0
  O  O20  1  0.066  0.376  0.882  1.0
  O  O21  1  0.651  0.306  0.459  1.0
  O  O22  1  0.656  0.829  0.944  1.0
  O  O23  1  0.942  0.167  0.607  1.0
  F  F24  1  0.256  0.392  0.279  1.0
  F  F25  1  0.905  0.584  0.112  1.0
  F  F26  1  0.710  0.564  0.723  1.0
  F  F27  1  0.741  0.052  0.219  1.0
[/CIF]
.