The structure described by Li4Co2OF7 is Spinel-derived structured and crystallizes in the monoclinic Pc space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one F(2), one F(3), one F(4), and one F(5) atom to form LiF4 tetrahedra that share corners with three equivalent Li(4)F6 octahedra, corners with three equivalent Li(3)OF5 octahedra, corners with three equivalent Co(1)OF5 octahedra, and corners with three equivalent Co(2)OF5 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the second Li site, Li(2) is bonded to one O(1), one F(1), one F(6), and one F(7) atom to form LiOF3 tetrahedra that share corners with three equivalent Li(4)F6 octahedra, corners with three equivalent Li(3)OF5 octahedra, corners with three equivalent Co(1)OF5 octahedra, and corners with three equivalent Co(2)OF5 octahedra. The corner-sharing octahedral tilt angles range from 53-61°. In the third Li site, Li(3) is bonded to one O(1), one F(3), one F(4), one F(5), one F(6), and one F(7) atom to form LiOF5 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(4)F6 octahedra, edges with two equivalent Co(1)OF5 octahedra, and edges with two equivalent Co(2)OF5 octahedra. In the fourth Li site, Li(4) is bonded to one F(1), one F(2), one F(4), one F(5), one F(6), and one F(7) atom to form LiF6 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(3)OF5 octahedra, edges with two equivalent Co(1)OF5 octahedra, and edges with two equivalent Co(2)OF5 octahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one F(1), one F(2), one F(3), one F(4), and one F(6) atom to form CoOF5 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(4)F6 octahedra, edges with two equivalent Li(3)OF5 octahedra, and edges with two equivalent Co(2)OF5 octahedra. In the second Co site, Co(2) is bonded to one O(1), one F(1), one F(2), one F(3), one F(5), and one F(7) atom to form CoOF5 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(4)F6 octahedra, edges with two equivalent Li(3)OF5 octahedra, and edges with two equivalent Co(1)OF5 octahedra. O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Li(3), one Co(1), and one Co(2) atom. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(4), one Co(1), and one Co(2) atom. In the second F site, F(2) is bonded to one Li(1), one Li(4), one Co(1), and one Co(2) atom to form a mixture of distorted corner and edge-sharing FLi2Co2 trigonal pyramids. In the third F site, F(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Co(1), and one Co(2) atom. In the fourth F site, F(4) is bonded to one Li(1), one Li(3), one Li(4), and one Co(1) atom to form a mixture of distorted corner and edge-sharing FLi3Co trigonal pyramids. In the fifth F site, F(5) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Li(4), and one Co(2) atom. In the sixth F site, F(6) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(3), one Li(4), and one Co(1) atom. In the seventh F site, F(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Li(3), one Li(4), and one Co(2) atom. is represented by the CIF file [CIF]
data_Li4Co2OF7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.027
_cell_length_b   5.901
_cell_length_c   8.498
_cell_angle_alpha   89.460
_cell_angle_beta   89.999
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   302.228
_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  0.502  0.510  0.491  1.0
  Li  Li1  1  0.998  0.010  0.991  1.0
  Li  Li2  1  0.499  0.992  0.259  1.0
  Li  Li3  1  0.001  0.492  0.759  1.0
  Li  Li4  1  0.999  0.249  0.374  1.0
  Li  Li5  1  0.501  0.749  0.874  1.0
  Li  Li6  1  0.001  0.745  0.378  1.0
  Li  Li7  1  0.499  0.245  0.878  1.0
  Co  Co8  1  0.770  0.022  0.626  1.0
  Co  Co9  1  0.730  0.522  0.126  1.0
  Co  Co10  1  0.256  0.509  0.124  1.0
  Co  Co11  1  0.244  0.009  0.624  1.0
  O  O12  1  0.512  0.716  0.124  1.0
  O  O13  1  0.988  0.216  0.624  1.0
  F  F14  1  0.508  0.252  0.118  1.0
  F  F15  1  0.992  0.752  0.618  1.0
  F  F16  1  0.994  0.742  0.131  1.0
  F  F17  1  0.506  0.242  0.631  1.0
  F  F18  1  0.987  0.284  0.126  1.0
  F  F19  1  0.513  0.784  0.626  1.0
  F  F20  1  0.766  0.494  0.360  1.0
  F  F21  1  0.265  0.997  0.863  1.0
  F  F22  1  0.235  0.497  0.363  1.0
  F  F23  1  0.734  0.994  0.860  1.0
  F  F24  1  0.760  0.993  0.390  1.0
  F  F25  1  0.267  0.496  0.886  1.0
  F  F26  1  0.233  0.996  0.386  1.0
  F  F27  1  0.740  0.493  0.890  1.0
[/CIF]
.
The structure described by Li4Co2OF7 is Spinel-derived structured and crystallizes in the monoclinic Pc space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one F(2), one F(3), one F(4), and one F(5) atom to form LiF4 tetrahedra that share corners with three equivalent Li(4)F6 octahedra, corners with three equivalent Li(3)OF5 octahedra, corners with three equivalent Co(1)OF5 octahedra, and corners with three equivalent Co(2)OF5 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the second Li site, Li(2) is bonded to one O(1), one F(1), one F(6), and one F(7) atom to form LiOF3 tetrahedra that share corners with three equivalent Li(4)F6 octahedra, corners with three equivalent Li(3)OF5 octahedra, corners with three equivalent Co(1)OF5 octahedra, and corners with three equivalent Co(2)OF5 octahedra. The corner-sharing octahedral tilt angles range from 53-61°. In the third Li site, Li(3) is bonded to one O(1), one F(3), one F(4), one F(5), one F(6), and one F(7) atom to form LiOF5 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(4)F6 octahedra, edges with two equivalent Co(1)OF5 octahedra, and edges with two equivalent Co(2)OF5 octahedra. In the fourth Li site, Li(4) is bonded to one F(1), one F(2), one F(4), one F(5), one F(6), and one F(7) atom to form LiF6 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(3)OF5 octahedra, edges with two equivalent Co(1)OF5 octahedra, and edges with two equivalent Co(2)OF5 octahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one F(1), one F(2), one F(3), one F(4), and one F(6) atom to form CoOF5 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(4)F6 octahedra, edges with two equivalent Li(3)OF5 octahedra, and edges with two equivalent Co(2)OF5 octahedra. In the second Co site, Co(2) is bonded to one O(1), one F(1), one F(2), one F(3), one F(5), and one F(7) atom to form CoOF5 octahedra that share corners with three equivalent Li(1)F4 tetrahedra, corners with three equivalent Li(2)OF3 tetrahedra, edges with two equivalent Li(4)F6 octahedra, edges with two equivalent Li(3)OF5 octahedra, and edges with two equivalent Co(1)OF5 octahedra. O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Li(3), one Co(1), and one Co(2) atom. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(4), one Co(1), and one Co(2) atom. In the second F site, F(2) is bonded to one Li(1), one Li(4), one Co(1), and one Co(2) atom to form a mixture of distorted corner and edge-sharing FLi2Co2 trigonal pyramids. In the third F site, F(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Co(1), and one Co(2) atom. In the fourth F site, F(4) is bonded to one Li(1), one Li(3), one Li(4), and one Co(1) atom to form a mixture of distorted corner and edge-sharing FLi3Co trigonal pyramids. In the fifth F site, F(5) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(3), one Li(4), and one Co(2) atom. In the sixth F site, F(6) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(3), one Li(4), and one Co(1) atom. In the seventh F site, F(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Li(3), one Li(4), and one Co(2) atom. is represented by the CIF file [CIF]
data_Li4Co2OF7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.027
_cell_length_b   5.901
_cell_length_c   8.498
_cell_angle_alpha   89.460
_cell_angle_beta   89.999
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   302.228
_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  0.502  0.510  0.491  1.0
  Li  Li1  1  0.998  0.010  0.991  1.0
  Li  Li2  1  0.499  0.992  0.259  1.0
  Li  Li3  1  0.001  0.492  0.759  1.0
  Li  Li4  1  0.999  0.249  0.374  1.0
  Li  Li5  1  0.501  0.749  0.874  1.0
  Li  Li6  1  0.001  0.745  0.378  1.0
  Li  Li7  1  0.499  0.245  0.878  1.0
  Co  Co8  1  0.770  0.022  0.626  1.0
  Co  Co9  1  0.730  0.522  0.126  1.0
  Co  Co10  1  0.256  0.509  0.124  1.0
  Co  Co11  1  0.244  0.009  0.624  1.0
  O  O12  1  0.512  0.716  0.124  1.0
  O  O13  1  0.988  0.216  0.624  1.0
  F  F14  1  0.508  0.252  0.118  1.0
  F  F15  1  0.992  0.752  0.618  1.0
  F  F16  1  0.994  0.742  0.131  1.0
  F  F17  1  0.506  0.242  0.631  1.0
  F  F18  1  0.987  0.284  0.126  1.0
  F  F19  1  0.513  0.784  0.626  1.0
  F  F20  1  0.766  0.494  0.360  1.0
  F  F21  1  0.265  0.997  0.863  1.0
  F  F22  1  0.235  0.497  0.363  1.0
  F  F23  1  0.734  0.994  0.860  1.0
  F  F24  1  0.760  0.993  0.390  1.0
  F  F25  1  0.267  0.496  0.886  1.0
  F  F26  1  0.233  0.996  0.386  1.0
  F  F27  1  0.740  0.493  0.890  1.0
[/CIF]
.