The crystal structure described by Li5Fe(Co2O5)2 is alpha Po-derived structured and crystallizes in the trigonal R-3m space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form LiO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, edges with three equivalent Co(2)O6 octahedra, and edges with six equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the second Li site, Li(2) is bonded to six equivalent O(3) atoms to form LiO6 octahedra that share corners with six equivalent Co(2)O6 octahedra, edges with six equivalent Li(2)O6 octahedra, and edges with six equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the third Li site, Li(3) is bonded to three equivalent O(4) and three equivalent O(5) atoms to form LiO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Co(1)O6 octahedra, edges with three equivalent Fe(1)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, and edges with six equivalent Li(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-5°. Fe(1) is bonded to six equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Li(3)O6 octahedra, edges with six equivalent Li(3)O6 octahedra, and edges with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to three equivalent O(1) and three equivalent O(5) atoms to form CoO6 octahedra that share corners with three equivalent Li(1)O6 octahedra, corners with three equivalent Li(3)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with six equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the second Co site, Co(2) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form CoO6 octahedra that share corners with three equivalent Li(1)O6 octahedra, corners with three equivalent Li(2)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with six equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are five inequivalent O sites. In the first O site, O(3) is bonded to three equivalent Li(2) and three equivalent Co(2) atoms to form a mixture of edge and corner-sharing OLi3Co3 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(4) is bonded to three equivalent Li(3) and three equivalent Fe(1) atoms to form OLi3Fe3 octahedra that share corners with three equivalent O(5)Li3Co3 octahedra, corners with three equivalent O(4)Li3Fe3 octahedra, edges with three equivalent O(5)Li3Co3 octahedra, and edges with nine equivalent O(4)Li3Fe3 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(5) is bonded to three equivalent Li(3) and three equivalent Co(1) atoms to form OLi3Co3 octahedra that share corners with three equivalent O(1)Li3Co3 octahedra, corners with three equivalent O(4)Li3Fe3 octahedra, edges with three equivalent O(1)Li3Co3 octahedra, edges with three equivalent O(4)Li3Fe3 octahedra, and edges with six equivalent O(5)Li3Co3 octahedra. The corner-sharing octahedra are not tilted. In the fourth O site, O(1) is bonded to three equivalent Li(1) and three equivalent Co(1) atoms to form a mixture of edge and corner-sharing OLi3Co3 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(2) is bonded to three equivalent Li(1) and three equivalent Co(2) atoms to form a mixture of edge and corner-sharing OLi3Co3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_Li5Fe(Co2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.931
_cell_length_b   2.931
_cell_length_c   24.318
_cell_angle_alpha   86.545
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   180.505
_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  0.400  0.800  0.800  1.0
  Li  Li1  1  0.200  0.400  0.400  1.0
  Li  Li2  1  0.800  0.600  0.600  1.0
  Li  Li3  1  0.000  0.001  0.999  1.0
  Li  Li4  1  0.600  0.199  0.201  1.0
  Fe  Fe5  1  0.300  0.600  0.100  1.0
  Co  Co6  1  0.900  0.800  0.300  1.0
  Co  Co7  1  0.500  1.000  0.500  1.0
  Co  Co8  1  0.100  0.200  0.700  1.0
  Co  Co9  1  0.700  0.400  0.900  1.0
  O  O10  1  0.049  0.097  0.854  1.0
  O  O11  1  0.849  0.697  0.454  1.0
  O  O12  1  0.449  0.897  0.654  1.0
  O  O13  1  0.649  0.298  0.053  1.0
  O  O14  1  0.248  0.497  0.255  1.0
  O  O15  1  0.352  0.703  0.945  1.0
  O  O16  1  0.151  0.303  0.546  1.0
  O  O17  1  0.751  0.503  0.746  1.0
  O  O18  1  0.951  0.902  0.147  1.0
  O  O19  1  0.551  0.103  0.346  1.0
[/CIF]
.
The crystal structure described by Li5Fe(Co2O5)2 is alpha Po-derived structured and crystallizes in the trigonal R-3m space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form LiO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, edges with three equivalent Co(2)O6 octahedra, and edges with six equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the second Li site, Li(2) is bonded to six equivalent O(3) atoms to form LiO6 octahedra that share corners with six equivalent Co(2)O6 octahedra, edges with six equivalent Li(2)O6 octahedra, and edges with six equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the third Li site, Li(3) is bonded to three equivalent O(4) and three equivalent O(5) atoms to form LiO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Co(1)O6 octahedra, edges with three equivalent Fe(1)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, and edges with six equivalent Li(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-5°. Fe(1) is bonded to six equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Li(3)O6 octahedra, edges with six equivalent Li(3)O6 octahedra, and edges with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to three equivalent O(1) and three equivalent O(5) atoms to form CoO6 octahedra that share corners with three equivalent Li(1)O6 octahedra, corners with three equivalent Li(3)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with six equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the second Co site, Co(2) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form CoO6 octahedra that share corners with three equivalent Li(1)O6 octahedra, corners with three equivalent Li(2)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with six equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are five inequivalent O sites. In the first O site, O(3) is bonded to three equivalent Li(2) and three equivalent Co(2) atoms to form a mixture of edge and corner-sharing OLi3Co3 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(4) is bonded to three equivalent Li(3) and three equivalent Fe(1) atoms to form OLi3Fe3 octahedra that share corners with three equivalent O(5)Li3Co3 octahedra, corners with three equivalent O(4)Li3Fe3 octahedra, edges with three equivalent O(5)Li3Co3 octahedra, and edges with nine equivalent O(4)Li3Fe3 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(5) is bonded to three equivalent Li(3) and three equivalent Co(1) atoms to form OLi3Co3 octahedra that share corners with three equivalent O(1)Li3Co3 octahedra, corners with three equivalent O(4)Li3Fe3 octahedra, edges with three equivalent O(1)Li3Co3 octahedra, edges with three equivalent O(4)Li3Fe3 octahedra, and edges with six equivalent O(5)Li3Co3 octahedra. The corner-sharing octahedra are not tilted. In the fourth O site, O(1) is bonded to three equivalent Li(1) and three equivalent Co(1) atoms to form a mixture of edge and corner-sharing OLi3Co3 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(2) is bonded to three equivalent Li(1) and three equivalent Co(2) atoms to form a mixture of edge and corner-sharing OLi3Co3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_Li5Fe(Co2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.931
_cell_length_b   2.931
_cell_length_c   24.318
_cell_angle_alpha   86.545
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   180.505
_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  0.400  0.800  0.800  1.0
  Li  Li1  1  0.200  0.400  0.400  1.0
  Li  Li2  1  0.800  0.600  0.600  1.0
  Li  Li3  1  0.000  0.001  0.999  1.0
  Li  Li4  1  0.600  0.199  0.201  1.0
  Fe  Fe5  1  0.300  0.600  0.100  1.0
  Co  Co6  1  0.900  0.800  0.300  1.0
  Co  Co7  1  0.500  1.000  0.500  1.0
  Co  Co8  1  0.100  0.200  0.700  1.0
  Co  Co9  1  0.700  0.400  0.900  1.0
  O  O10  1  0.049  0.097  0.854  1.0
  O  O11  1  0.849  0.697  0.454  1.0
  O  O12  1  0.449  0.897  0.654  1.0
  O  O13  1  0.649  0.298  0.053  1.0
  O  O14  1  0.248  0.497  0.255  1.0
  O  O15  1  0.352  0.703  0.945  1.0
  O  O16  1  0.151  0.303  0.546  1.0
  O  O17  1  0.751  0.503  0.746  1.0
  O  O18  1  0.951  0.902  0.147  1.0
  O  O19  1  0.551  0.103  0.346  1.0
[/CIF]
.