The structure described by Li(FeO2)2 crystallizes in the triclinic P-1 space group. Li(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form LiO6 octahedra that share corners with six equivalent Fe(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-12°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share edges with two equivalent Fe(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Fe(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Li(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-12°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Fe(1), and two equivalent Fe(2) atoms to form a mixture of edge and corner-sharing OLi2Fe3 square pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Fe(2), and two equivalent Fe(1) atoms. is represented by the CIF file [CIF]
data_Li(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.004
_cell_length_b   5.110
_cell_length_c   5.179
_cell_angle_alpha   107.329
_cell_angle_beta   91.676
_cell_angle_gamma   91.473
_symmetry_Int_Tables_number   1
_cell_volume   75.809
_cell_formula_units_Z   1
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  0.500  0.000  0.500  1.0
  Fe  Fe1  1  0.000  0.000  0.000  1.0
  Fe  Fe2  1  0.500  0.500  0.000  1.0
  O  O3  1  0.014  0.750  0.213  1.0
  O  O4  1  0.527  0.778  0.788  1.0
  O  O5  1  0.473  0.222  0.212  1.0
  O  O6  1  0.986  0.250  0.787  1.0
[/CIF]
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The structure described by Li(FeO2)2 crystallizes in the triclinic P-1 space group. Li(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form LiO6 octahedra that share corners with six equivalent Fe(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-12°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share edges with two equivalent Fe(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Fe(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Li(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-12°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Fe(1), and two equivalent Fe(2) atoms to form a mixture of edge and corner-sharing OLi2Fe3 square pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Fe(2), and two equivalent Fe(1) atoms. is represented by the CIF file [CIF]
data_Li(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.004
_cell_length_b   5.110
_cell_length_c   5.179
_cell_angle_alpha   107.329
_cell_angle_beta   91.676
_cell_angle_gamma   91.473
_symmetry_Int_Tables_number   1
_cell_volume   75.809
_cell_formula_units_Z   1
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  0.500  0.000  0.500  1.0
  Fe  Fe1  1  0.000  0.000  0.000  1.0
  Fe  Fe2  1  0.500  0.500  0.000  1.0
  O  O3  1  0.014  0.750  0.213  1.0
  O  O4  1  0.527  0.778  0.788  1.0
  O  O5  1  0.473  0.222  0.212  1.0
  O  O6  1  0.986  0.250  0.787  1.0
[/CIF]
.