The material structure described by Li7Ni(O2F)2 crystallizes in the triclinic P1 space group. There are fourteen inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one F(1), one F(2), and one F(3) atom. In the second Li site, Li(2) is bonded in a distorted L-shaped geometry to one O(2), one O(5), one O(8), and one F(4) atom. In the third Li site, Li(3) is bonded in a 3-coordinate geometry to one O(1), one O(6), and one F(3) atom. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(3), one O(7), one F(1), one F(2), and one F(3) atom. In the fifth Li site, Li(5) is bonded in a 3-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 in a 3-coordinate geometry to one O(5), one O(7), and one F(2) atom. In the seventh Li site, Li(7) is bonded in a 2-coordinate geometry to one O(8) and one F(4) atom. In the eighth Li site, Li(8) is bonded in a 4-coordinate geometry to one O(3), one O(7), one F(2), and one F(3) atom. In the ninth Li site, Li(9) is bonded in a 3-coordinate geometry to one O(1), one O(4), and one O(8) atom. In the tenth Li site, Li(10) is bonded in a 4-coordinate geometry to one O(3), one O(5), one O(7), and one F(4) atom. In the eleventh Li site, Li(11) is bonded in a distorted water-like geometry to one O(4) and one O(8) atom. In the twelfth Li site, Li(12) is bonded in a 4-coordinate geometry to one O(1), one F(1), one F(2), and one F(3) atom. In the thirteenth Li site, Li(13) is bonded in a 2-coordinate geometry to one Ni(1), one O(2), one O(7), one O(8), and one F(4) atom. In the fourteenth Li site, Li(14) is bonded in a 3-coordinate geometry to one O(2), one O(5), and one O(7) atom. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 5-coordinate geometry to one Li(13), one O(2), one O(3), one O(5), and one O(7) atom. In the second Ni site, Ni(2) is bonded in a distorted linear 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 6-coordinate geometry to one Li(1), one Li(12), one Li(3), one Li(5), one Li(9), and one Ni(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(13), one Li(14), one Li(2), and one Ni(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(10), one Li(4), one Li(8), and one Ni(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(11), one Li(9), and one Ni(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(10), one Li(14), one Li(2), one Li(6), and one Ni(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(3), one Li(5), and one Ni(2) atom. In the seventh O site, O(7) is bonded in a 7-coordinate geometry to one Li(10), one Li(13), one Li(14), one Li(4), one Li(6), one Li(8), and one Ni(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(2), one Li(5), one Li(7), one Li(9), and one Ni(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 distorted edge and corner-sharing FLi4 tetrahedra. In the second F site, F(2) is bonded to one Li(1), one Li(12), one Li(4), one Li(6), and one Li(8) atom to form distorted FLi5 trigonal bipyramids that share corners with three equivalent F(1)Li4 tetrahedra and edges with two equivalent F(3)Li5 trigonal bipyramids. In the third F site, F(3) is bonded to one Li(1), one Li(12), one Li(3), one Li(4), and one Li(8) atom to form distorted FLi5 trigonal bipyramids that share  a cornercorner with one F(1)Li4 tetrahedra,  an edgeedge with one F(1)Li4 tetrahedra, and edges with two equivalent F(2)Li5 trigonal bipyramids. In the fourth F site, F(4) is bonded in a 3-coordinate geometry to one Li(10), one Li(13), one Li(2), and one Li(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li7Ni(O2F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.356
_cell_length_b   5.637
_cell_length_c   10.071
_cell_angle_alpha   105.820
_cell_angle_beta   85.882
_cell_angle_gamma   115.991
_symmetry_Int_Tables_number   1
_cell_volume   262.576
_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  0.057  0.963  0.773  1.0
  Li  Li1  1  0.474  0.378  0.254  1.0
  Li  Li2  1  0.542  0.057  0.616  1.0
  Li  Li3  1  0.966  0.427  0.885  1.0
  Li  Li4  1  0.048  0.783  0.558  1.0
  Li  Li5  1  0.517  0.280  0.038  1.0
  Li  Li6  1  0.956  0.652  0.323  1.0
  Li  Li7  1  0.484  0.761  0.939  1.0
  Li  Li8  1  0.980  0.225  0.473  1.0
  Li  Li9  1  0.982  0.505  0.107  1.0
  Li  Li10  1  0.495  0.970  0.384  1.0
  Li  Li11  1  0.467  0.536  0.721  1.0
  Li  Li12  1  0.988  0.097  0.249  1.0
  Li  Li13  1  0.503  0.851  0.163  1.0
  Ni  Ni14  1  0.002  0.960  0.043  1.0
  Ni  Ni15  1  0.511  0.506  0.492  1.0
  O  O16  1  0.262  0.176  0.602  1.0
  O  O17  1  0.280  0.037  0.198  1.0
  O  O18  1  0.171  0.806  0.971  1.0
  O  O19  1  0.667  0.320  0.435  1.0
  O  O20  1  0.696  0.630  0.108  1.0
  O  O21  1  0.342  0.690  0.537  1.0
  O  O22  1  0.820  0.164  0.062  1.0
  O  O23  1  0.779  0.840  0.392  1.0
  F  F24  1  0.855  0.601  0.721  1.0
  F  F25  1  0.297  0.391  0.889  1.0
  F  F26  1  0.697  0.946  0.787  1.0
  F  F27  1  0.159  0.447  0.280  1.0
[/CIF]
.
The material structure described by Li7Ni(O2F)2 crystallizes in the triclinic P1 space group. There are fourteen inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one F(1), one F(2), and one F(3) atom. In the second Li site, Li(2) is bonded in a distorted L-shaped geometry to one O(2), one O(5), one O(8), and one F(4) atom. In the third Li site, Li(3) is bonded in a 3-coordinate geometry to one O(1), one O(6), and one F(3) atom. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(3), one O(7), one F(1), one F(2), and one F(3) atom. In the fifth Li site, Li(5) is bonded in a 3-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 in a 3-coordinate geometry to one O(5), one O(7), and one F(2) atom. In the seventh Li site, Li(7) is bonded in a 2-coordinate geometry to one O(8) and one F(4) atom. In the eighth Li site, Li(8) is bonded in a 4-coordinate geometry to one O(3), one O(7), one F(2), and one F(3) atom. In the ninth Li site, Li(9) is bonded in a 3-coordinate geometry to one O(1), one O(4), and one O(8) atom. In the tenth Li site, Li(10) is bonded in a 4-coordinate geometry to one O(3), one O(5), one O(7), and one F(4) atom. In the eleventh Li site, Li(11) is bonded in a distorted water-like geometry to one O(4) and one O(8) atom. In the twelfth Li site, Li(12) is bonded in a 4-coordinate geometry to one O(1), one F(1), one F(2), and one F(3) atom. In the thirteenth Li site, Li(13) is bonded in a 2-coordinate geometry to one Ni(1), one O(2), one O(7), one O(8), and one F(4) atom. In the fourteenth Li site, Li(14) is bonded in a 3-coordinate geometry to one O(2), one O(5), and one O(7) atom. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 5-coordinate geometry to one Li(13), one O(2), one O(3), one O(5), and one O(7) atom. In the second Ni site, Ni(2) is bonded in a distorted linear 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 6-coordinate geometry to one Li(1), one Li(12), one Li(3), one Li(5), one Li(9), and one Ni(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(13), one Li(14), one Li(2), and one Ni(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(10), one Li(4), one Li(8), and one Ni(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(11), one Li(9), and one Ni(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(10), one Li(14), one Li(2), one Li(6), and one Ni(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(3), one Li(5), and one Ni(2) atom. In the seventh O site, O(7) is bonded in a 7-coordinate geometry to one Li(10), one Li(13), one Li(14), one Li(4), one Li(6), one Li(8), and one Ni(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(2), one Li(5), one Li(7), one Li(9), and one Ni(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 distorted edge and corner-sharing FLi4 tetrahedra. In the second F site, F(2) is bonded to one Li(1), one Li(12), one Li(4), one Li(6), and one Li(8) atom to form distorted FLi5 trigonal bipyramids that share corners with three equivalent F(1)Li4 tetrahedra and edges with two equivalent F(3)Li5 trigonal bipyramids. In the third F site, F(3) is bonded to one Li(1), one Li(12), one Li(3), one Li(4), and one Li(8) atom to form distorted FLi5 trigonal bipyramids that share  a cornercorner with one F(1)Li4 tetrahedra,  an edgeedge with one F(1)Li4 tetrahedra, and edges with two equivalent F(2)Li5 trigonal bipyramids. In the fourth F site, F(4) is bonded in a 3-coordinate geometry to one Li(10), one Li(13), one Li(2), and one Li(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li7Ni(O2F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.356
_cell_length_b   5.637
_cell_length_c   10.071
_cell_angle_alpha   105.820
_cell_angle_beta   85.882
_cell_angle_gamma   115.991
_symmetry_Int_Tables_number   1
_cell_volume   262.576
_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  0.057  0.963  0.773  1.0
  Li  Li1  1  0.474  0.378  0.254  1.0
  Li  Li2  1  0.542  0.057  0.616  1.0
  Li  Li3  1  0.966  0.427  0.885  1.0
  Li  Li4  1  0.048  0.783  0.558  1.0
  Li  Li5  1  0.517  0.280  0.038  1.0
  Li  Li6  1  0.956  0.652  0.323  1.0
  Li  Li7  1  0.484  0.761  0.939  1.0
  Li  Li8  1  0.980  0.225  0.473  1.0
  Li  Li9  1  0.982  0.505  0.107  1.0
  Li  Li10  1  0.495  0.970  0.384  1.0
  Li  Li11  1  0.467  0.536  0.721  1.0
  Li  Li12  1  0.988  0.097  0.249  1.0
  Li  Li13  1  0.503  0.851  0.163  1.0
  Ni  Ni14  1  0.002  0.960  0.043  1.0
  Ni  Ni15  1  0.511  0.506  0.492  1.0
  O  O16  1  0.262  0.176  0.602  1.0
  O  O17  1  0.280  0.037  0.198  1.0
  O  O18  1  0.171  0.806  0.971  1.0
  O  O19  1  0.667  0.320  0.435  1.0
  O  O20  1  0.696  0.630  0.108  1.0
  O  O21  1  0.342  0.690  0.537  1.0
  O  O22  1  0.820  0.164  0.062  1.0
  O  O23  1  0.779  0.840  0.392  1.0
  F  F24  1  0.855  0.601  0.721  1.0
  F  F25  1  0.297  0.391  0.889  1.0
  F  F26  1  0.697  0.946  0.787  1.0
  F  F27  1  0.159  0.447  0.280  1.0
[/CIF]
.