The material described by Li4Fe3(NiO5)2 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(6), and one O(9) atom to form distorted LiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-17°. In the second Li site, Li(2) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-17°. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, and edges with two equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-17°. In the fourth Li site, Li(4) is bonded to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted LiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Li(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-12°. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(3)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-15°. In the third Fe site, Fe(3) is bonded to one O(1), one O(10), one O(3), one O(5), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-14°. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(7), and one O(9) atom to form NiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-17°. In the second Ni site, Ni(2) is bonded to one O(10), one O(2), one O(4), one O(6), one O(8), and one O(9) atom to form NiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Li(3), one Fe(1), one Fe(2), one Fe(3), and one Ni(1) atom to form OLiFe3Ni square pyramids that share  a cornercorner with one O(10)Li2Fe3Ni octahedra, corners with two equivalent O(6)Li4FeNi octahedra,  a cornercorner with one O(5)Li3FeNi square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(2)Li3Ni2 square pyramids, corners with two equivalent O(3)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(9)Li4Ni2 octahedra,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid,  an edgeedge with one O(8)LiFe3Ni square pyramid, and edges with two equivalent O(7)Li2Fe2Ni square pyramids. The corner-sharing octahedral tilt angles range from 3-4°. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Li(3), one Ni(1), and one Ni(2) atom to form OLi3Ni2 square pyramids that share  a cornercorner with one O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(9)Li4Ni2 octahedra,  a cornercorner with one O(7)Li2Fe2Ni square pyramid,  a cornercorner with one O(3)LiFe3Ni square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(5)Li3FeNi square pyramids, corners with two equivalent O(1)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(4)Li3Fe2Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid, and  an edgeedge with one O(5)Li3FeNi square pyramid. The corner-sharing octahedral tilt angles range from 8-20°. In the third O site, O(3) is bonded to one Li(4), one Fe(1), one Fe(2), one Fe(3), and one Ni(1) atom to form OLiFe3Ni square pyramids that share  a cornercorner with one O(4)Li3Fe2Ni octahedra, corners with two equivalent O(9)Li4Ni2 octahedra,  a cornercorner with one O(7)Li2Fe2Ni square pyramid,  a cornercorner with one O(2)Li3Ni2 square pyramid, corners with two equivalent O(1)LiFe3Ni square pyramids, corners with two equivalent O(8)LiFe3Ni square pyramids,  an edgeedge with one O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(6)Li4FeNi octahedra, edges with two equivalent O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid, and  an edgeedge with one O(8)LiFe3Ni square pyramid. The corner-sharing octahedral tilt angles range from 2-14°. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Li(4), one Fe(1), one Fe(2), and one Ni(2) atom to form OLi3Fe2Ni octahedra that share  a cornercorner with one O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(6)Li4FeNi octahedra,  a cornercorner with one O(2)Li3Ni2 square pyramid,  a cornercorner with one O(3)LiFe3Ni square pyramid, corners with two equivalent O(7)Li2Fe2Ni square pyramids, edges with two equivalent O(10)Li2Fe3Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid, and edges with two equivalent O(8)LiFe3Ni square pyramids. The corner-sharing octahedral tilt angles range from 8-17°. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Li(3), one Fe(3), and one Ni(1) atom to form OLi3FeNi square pyramids that share  a cornercorner with one O(6)Li4FeNi octahedra, corners with two equivalent O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(1)LiFe3Ni square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(7)Li2Fe2Ni square pyramids, corners with two equivalent O(2)Li3Ni2 square pyramids,  an edgeedge with one O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(6)Li4FeNi octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid, and  an edgeedge with one O(3)LiFe3Ni square pyramid. The corner-sharing octahedral tilt angles range from 1-9°. In the sixth O site, O(6) is bonded to one Li(1), one Li(2), one Li(3), one Li(4), one Fe(2), and one Ni(2) atom to form OLi4FeNi octahedra that share  a cornercorner with one O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(9)Li4Ni2 octahedra,  a cornercorner with one O(5)Li3FeNi square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(1)LiFe3Ni square pyramids, edges with two equivalent O(10)Li2Fe3Ni octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid,  an edgeedge with one O(8)LiFe3Ni square pyramid, and edges with two equivalent O(2)Li3Ni2 square pyramids. The corner-sharing octahedral tilt angles range from 8-10°. In the seventh O site, O(7) is bonded to one Li(2), one Li(3), one Fe(1), one Fe(3), and one Ni(1) atom to form OLi2Fe2Ni square pyramids that share  a cornercorner with one O(9)Li4Ni2 octahedra, corners with two equivalent O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(2)Li3Ni2 square pyramid,  a cornercorner with one O(3)LiFe3Ni square pyramid, corners with two equivalent O(5)Li3FeNi square pyramids, corners with two equivalent O(8)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(6)Li4FeNi octahedra,  an edgeedge with one O(9)Li4Ni2 octahedra,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid, and edges with two equivalent O(1)LiFe3Ni square pyramids. The corner-sharing octahedral tilt angles range from 5-11°. In the eighth O site, O(8) is bonded to one Li(4), one Fe(1), one Fe(2), one Fe(3), and one Ni(2) atom to form OLiFe3Ni square pyramids that share  a cornercorner with one O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(6)Li4FeNi octahedra,  a cornercorner with one O(5)Li3FeNi square pyramid,  a cornercorner with one O(2)Li3Ni2 square pyramid,  a cornercorner with one O(1)LiFe3Ni square pyramid, corners with two equivalent O(7)Li2Fe2Ni square pyramids, corners with two equivalent O(3)LiFe3Ni square pyramids,  an edgeedge with one O(6)Li4FeNi octahedra,  an edgeedge with one O(9)Li4Ni2 octahedra, edges with two equivalent O(10)Li2Fe3Ni octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(1)LiFe3Ni square pyramid, and  an edgeedge with one O(3)LiFe3Ni square pyramid. The corner-sharing octahedral tilt angles range from 6-7°. In the ninth O site, O(9) is bonded to one Li(1), one Li(2), one Li(3), one Li(4), one Ni(1), and one Ni(2) atom to form OLi4Ni2 octahedra that share  a cornercorner with one O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(6)Li4FeNi octahedra,  a cornercorner with one O(7)Li2Fe2Ni square pyramid,  a cornercorner with one O(2)Li3Ni2 square pyramid, corners with two equivalent O(3)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid,  an edgeedge with one O(8)LiFe3Ni square pyramid, edges with two equivalent O(5)Li3FeNi square pyramids, and edges with two equivalent O(2)Li3Ni2 square pyramids. The corner-sharing octahedral tilt angles range from 3-10°. In the tenth O site, O(10) is bonded to one Li(1), one Li(4), one Fe(1), one Fe(2), one Fe(3), and one Ni(2) atom to form OLi2Fe3Ni octahedra that share  a cornercorner with one O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(9)Li4Ni2 octahedra,  a cornercorner with one O(1)LiFe3Ni square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(5)Li3FeNi square pyramids,  an edgeedge with one O(9)Li4Ni2 octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid, edges with two equivalent O(3)LiFe3Ni square pyramids, and edges with two equivalent O(8)LiFe3Ni square pyramids. The corner-sharing octahedral tilt angles range from 3-17°. is represented by the CIF file [CIF]
data_Li4Fe3(NiO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.100
_cell_length_b   5.099
_cell_length_c   7.748
_cell_angle_alpha   71.246
_cell_angle_beta   108.745
_cell_angle_gamma   100.176
_symmetry_Int_Tables_number   1
_cell_volume   180.061
_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  0.225  0.487  0.429  1.0
  Li  Li1  1  0.504  0.980  0.509  1.0
  Li  Li2  1  0.797  0.511  0.589  1.0
  Li  Li3  1  0.618  0.487  0.226  1.0
  Fe  Fe4  1  1.000  0.500  0.993  1.0
  Fe  Fe5  1  0.307  0.998  0.114  1.0
  Fe  Fe6  1  0.681  0.998  0.886  1.0
  Ni  Ni7  1  0.100  0.008  0.692  1.0
  Ni  Ni8  1  0.898  0.000  0.306  1.0
  O  O9  1  0.032  0.236  0.854  1.0
  O  O10  1  0.117  0.795  0.532  1.0
  O  O11  1  0.325  0.787  0.936  1.0
  O  O12  1  0.235  0.258  0.229  1.0
  O  O13  1  0.432  0.211  0.658  1.0
  O  O14  1  0.548  0.763  0.338  1.0
  O  O15  1  0.790  0.769  0.755  1.0
  O  O16  1  0.677  0.223  0.071  1.0
  O  O17  1  0.879  0.228  0.466  1.0
  O  O18  1  0.946  0.755  0.137  1.0
[/CIF]
.
The material described by Li4Fe3(NiO5)2 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(6), and one O(9) atom to form distorted LiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-17°. In the second Li site, Li(2) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-17°. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, and edges with two equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-17°. In the fourth Li site, Li(4) is bonded to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted LiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Ni(1)O6 octahedra,  a cornercorner with one Ni(2)O6 octahedra, corners with two equivalent Li(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-12°. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(3)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-15°. In the third Fe site, Fe(3) is bonded to one O(1), one O(10), one O(3), one O(5), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-14°. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(7), and one O(9) atom to form NiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-17°. In the second Ni site, Ni(2) is bonded to one O(10), one O(2), one O(4), one O(6), one O(8), and one O(9) atom to form NiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Li(3), one Fe(1), one Fe(2), one Fe(3), and one Ni(1) atom to form OLiFe3Ni square pyramids that share  a cornercorner with one O(10)Li2Fe3Ni octahedra, corners with two equivalent O(6)Li4FeNi octahedra,  a cornercorner with one O(5)Li3FeNi square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(2)Li3Ni2 square pyramids, corners with two equivalent O(3)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(9)Li4Ni2 octahedra,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid,  an edgeedge with one O(8)LiFe3Ni square pyramid, and edges with two equivalent O(7)Li2Fe2Ni square pyramids. The corner-sharing octahedral tilt angles range from 3-4°. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Li(3), one Ni(1), and one Ni(2) atom to form OLi3Ni2 square pyramids that share  a cornercorner with one O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(9)Li4Ni2 octahedra,  a cornercorner with one O(7)Li2Fe2Ni square pyramid,  a cornercorner with one O(3)LiFe3Ni square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(5)Li3FeNi square pyramids, corners with two equivalent O(1)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(4)Li3Fe2Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid, and  an edgeedge with one O(5)Li3FeNi square pyramid. The corner-sharing octahedral tilt angles range from 8-20°. In the third O site, O(3) is bonded to one Li(4), one Fe(1), one Fe(2), one Fe(3), and one Ni(1) atom to form OLiFe3Ni square pyramids that share  a cornercorner with one O(4)Li3Fe2Ni octahedra, corners with two equivalent O(9)Li4Ni2 octahedra,  a cornercorner with one O(7)Li2Fe2Ni square pyramid,  a cornercorner with one O(2)Li3Ni2 square pyramid, corners with two equivalent O(1)LiFe3Ni square pyramids, corners with two equivalent O(8)LiFe3Ni square pyramids,  an edgeedge with one O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(6)Li4FeNi octahedra, edges with two equivalent O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid, and  an edgeedge with one O(8)LiFe3Ni square pyramid. The corner-sharing octahedral tilt angles range from 2-14°. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Li(4), one Fe(1), one Fe(2), and one Ni(2) atom to form OLi3Fe2Ni octahedra that share  a cornercorner with one O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(6)Li4FeNi octahedra,  a cornercorner with one O(2)Li3Ni2 square pyramid,  a cornercorner with one O(3)LiFe3Ni square pyramid, corners with two equivalent O(7)Li2Fe2Ni square pyramids, edges with two equivalent O(10)Li2Fe3Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid, and edges with two equivalent O(8)LiFe3Ni square pyramids. The corner-sharing octahedral tilt angles range from 8-17°. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Li(3), one Fe(3), and one Ni(1) atom to form OLi3FeNi square pyramids that share  a cornercorner with one O(6)Li4FeNi octahedra, corners with two equivalent O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(1)LiFe3Ni square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(7)Li2Fe2Ni square pyramids, corners with two equivalent O(2)Li3Ni2 square pyramids,  an edgeedge with one O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(6)Li4FeNi octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid, and  an edgeedge with one O(3)LiFe3Ni square pyramid. The corner-sharing octahedral tilt angles range from 1-9°. In the sixth O site, O(6) is bonded to one Li(1), one Li(2), one Li(3), one Li(4), one Fe(2), and one Ni(2) atom to form OLi4FeNi octahedra that share  a cornercorner with one O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(9)Li4Ni2 octahedra,  a cornercorner with one O(5)Li3FeNi square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(1)LiFe3Ni square pyramids, edges with two equivalent O(10)Li2Fe3Ni octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra, edges with two equivalent O(9)Li4Ni2 octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid,  an edgeedge with one O(8)LiFe3Ni square pyramid, and edges with two equivalent O(2)Li3Ni2 square pyramids. The corner-sharing octahedral tilt angles range from 8-10°. In the seventh O site, O(7) is bonded to one Li(2), one Li(3), one Fe(1), one Fe(3), and one Ni(1) atom to form OLi2Fe2Ni square pyramids that share  a cornercorner with one O(9)Li4Ni2 octahedra, corners with two equivalent O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(2)Li3Ni2 square pyramid,  a cornercorner with one O(3)LiFe3Ni square pyramid, corners with two equivalent O(5)Li3FeNi square pyramids, corners with two equivalent O(8)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra,  an edgeedge with one O(6)Li4FeNi octahedra,  an edgeedge with one O(9)Li4Ni2 octahedra,  an edgeedge with one O(5)Li3FeNi square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(3)LiFe3Ni square pyramid, and edges with two equivalent O(1)LiFe3Ni square pyramids. The corner-sharing octahedral tilt angles range from 5-11°. In the eighth O site, O(8) is bonded to one Li(4), one Fe(1), one Fe(2), one Fe(3), and one Ni(2) atom to form OLiFe3Ni square pyramids that share  a cornercorner with one O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(6)Li4FeNi octahedra,  a cornercorner with one O(5)Li3FeNi square pyramid,  a cornercorner with one O(2)Li3Ni2 square pyramid,  a cornercorner with one O(1)LiFe3Ni square pyramid, corners with two equivalent O(7)Li2Fe2Ni square pyramids, corners with two equivalent O(3)LiFe3Ni square pyramids,  an edgeedge with one O(6)Li4FeNi octahedra,  an edgeedge with one O(9)Li4Ni2 octahedra, edges with two equivalent O(10)Li2Fe3Ni octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra,  an edgeedge with one O(1)LiFe3Ni square pyramid, and  an edgeedge with one O(3)LiFe3Ni square pyramid. The corner-sharing octahedral tilt angles range from 6-7°. In the ninth O site, O(9) is bonded to one Li(1), one Li(2), one Li(3), one Li(4), one Ni(1), and one Ni(2) atom to form OLi4Ni2 octahedra that share  a cornercorner with one O(10)Li2Fe3Ni octahedra,  a cornercorner with one O(6)Li4FeNi octahedra,  a cornercorner with one O(7)Li2Fe2Ni square pyramid,  a cornercorner with one O(2)Li3Ni2 square pyramid, corners with two equivalent O(3)LiFe3Ni square pyramids,  an edgeedge with one O(10)Li2Fe3Ni octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid,  an edgeedge with one O(8)LiFe3Ni square pyramid, edges with two equivalent O(5)Li3FeNi square pyramids, and edges with two equivalent O(2)Li3Ni2 square pyramids. The corner-sharing octahedral tilt angles range from 3-10°. In the tenth O site, O(10) is bonded to one Li(1), one Li(4), one Fe(1), one Fe(2), one Fe(3), and one Ni(2) atom to form OLi2Fe3Ni octahedra that share  a cornercorner with one O(4)Li3Fe2Ni octahedra,  a cornercorner with one O(9)Li4Ni2 octahedra,  a cornercorner with one O(1)LiFe3Ni square pyramid,  a cornercorner with one O(8)LiFe3Ni square pyramid, corners with two equivalent O(5)Li3FeNi square pyramids,  an edgeedge with one O(9)Li4Ni2 octahedra, edges with two equivalent O(4)Li3Fe2Ni octahedra, edges with two equivalent O(6)Li4FeNi octahedra,  an edgeedge with one O(7)Li2Fe2Ni square pyramid,  an edgeedge with one O(2)Li3Ni2 square pyramid,  an edgeedge with one O(1)LiFe3Ni square pyramid, edges with two equivalent O(3)LiFe3Ni square pyramids, and edges with two equivalent O(8)LiFe3Ni square pyramids. The corner-sharing octahedral tilt angles range from 3-17°. is represented by the CIF file [CIF]
data_Li4Fe3(NiO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.100
_cell_length_b   5.099
_cell_length_c   7.748
_cell_angle_alpha   71.246
_cell_angle_beta   108.745
_cell_angle_gamma   100.176
_symmetry_Int_Tables_number   1
_cell_volume   180.061
_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  0.225  0.487  0.429  1.0
  Li  Li1  1  0.504  0.980  0.509  1.0
  Li  Li2  1  0.797  0.511  0.589  1.0
  Li  Li3  1  0.618  0.487  0.226  1.0
  Fe  Fe4  1  1.000  0.500  0.993  1.0
  Fe  Fe5  1  0.307  0.998  0.114  1.0
  Fe  Fe6  1  0.681  0.998  0.886  1.0
  Ni  Ni7  1  0.100  0.008  0.692  1.0
  Ni  Ni8  1  0.898  0.000  0.306  1.0
  O  O9  1  0.032  0.236  0.854  1.0
  O  O10  1  0.117  0.795  0.532  1.0
  O  O11  1  0.325  0.787  0.936  1.0
  O  O12  1  0.235  0.258  0.229  1.0
  O  O13  1  0.432  0.211  0.658  1.0
  O  O14  1  0.548  0.763  0.338  1.0
  O  O15  1  0.790  0.769  0.755  1.0
  O  O16  1  0.677  0.223  0.071  1.0
  O  O17  1  0.879  0.228  0.466  1.0
  O  O18  1  0.946  0.755  0.137  1.0
[/CIF]
.