The structure described by Li4Fe2Cu3O10 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(5), two equivalent O(3), and two equivalent O(4) atoms to form distorted LiO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-18°. In the second Li site, Li(2) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form distorted LiO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-19°. Fe(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form FeO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with three equivalent Li(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-19°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form distorted CuO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Li(2)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to one O(2), one O(4), one O(5), and two equivalent O(1) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Li(1), one Li(2), one Fe(1), one Cu(1), and two equivalent Cu(2) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Li(2), one Fe(1), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to one Li(2), two equivalent Li(1), and two equivalent Fe(1) atoms to form distorted OLi3Fe2 square pyramids that share corners with three equivalent O(5)Li2FeCu2 square pyramids, corners with three equivalent O(4)Li3FeCu square pyramids,  an edgeedge with one O(5)Li2FeCu2 square pyramid, edges with two equivalent O(3)Li3Fe2 square pyramids, and edges with two equivalent O(4)Li3FeCu square pyramids. In the fourth O site, O(4) is bonded to one Li(2), two equivalent Li(1), one Fe(1), and one Cu(2) atom to form distorted OLi3FeCu square pyramids that share corners with three equivalent O(5)Li2FeCu2 square pyramids, corners with three equivalent O(3)Li3Fe2 square pyramids,  an edgeedge with one O(5)Li2FeCu2 square pyramid,  an edgeedge with one O(4)Li3FeCu square pyramid, and edges with two equivalent O(3)Li3Fe2 square pyramids. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Fe(1), one Cu(1), and one Cu(2) atom to form distorted OLi2FeCu2 square pyramids that share  a cornercorner with one O(5)Li2FeCu2 square pyramid, corners with three equivalent O(3)Li3Fe2 square pyramids, corners with three equivalent O(4)Li3FeCu square pyramids,  an edgeedge with one O(3)Li3Fe2 square pyramid, and  an edgeedge with one O(4)Li3FeCu square pyramid. is represented by the CIF card [CIF]
data_Li4Fe2Cu3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.021
_cell_length_b   5.502
_cell_length_c   7.654
_cell_angle_alpha   102.271
_cell_angle_beta   103.062
_cell_angle_gamma   106.534
_symmetry_Int_Tables_number   1
_cell_volume   188.564
_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  0.218  0.904  0.398  1.0
  Li  Li1  1  0.394  0.294  0.772  1.0
  Li  Li2  1  0.606  0.706  0.228  1.0
  Li  Li3  1  0.782  0.096  0.602  1.0
  Fe  Fe4  1  0.094  0.678  0.687  1.0
  Fe  Fe5  1  0.906  0.322  0.313  1.0
  Cu  Cu6  1  0.000  0.500  0.000  1.0
  Cu  Cu7  1  0.696  0.891  0.902  1.0
  Cu  Cu8  1  0.304  0.109  0.098  1.0
  O  O9  1  0.051  0.053  0.854  1.0
  O  O10  1  0.338  0.658  0.916  1.0
  O  O11  1  0.113  0.309  0.538  1.0
  O  O12  1  0.450  0.915  0.685  1.0
  O  O13  1  0.212  0.519  0.237  1.0
  O  O14  1  0.788  0.481  0.763  1.0
  O  O15  1  0.550  0.085  0.315  1.0
  O  O16  1  0.887  0.691  0.462  1.0
  O  O17  1  0.662  0.342  0.084  1.0
  O  O18  1  0.949  0.947  0.146  1.0
[/CIF]
.
The structure described by Li4Fe2Cu3O10 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(5), two equivalent O(3), and two equivalent O(4) atoms to form distorted LiO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-18°. In the second Li site, Li(2) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms to form distorted LiO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-19°. Fe(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form FeO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with three equivalent Li(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-19°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form distorted CuO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Li(2)O6 octahedra. The corner-sharing octahedral tilt angles are 8°. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to one O(2), one O(4), one O(5), and two equivalent O(1) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Li(1), one Li(2), one Fe(1), one Cu(1), and two equivalent Cu(2) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Li(2), one Fe(1), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to one Li(2), two equivalent Li(1), and two equivalent Fe(1) atoms to form distorted OLi3Fe2 square pyramids that share corners with three equivalent O(5)Li2FeCu2 square pyramids, corners with three equivalent O(4)Li3FeCu square pyramids,  an edgeedge with one O(5)Li2FeCu2 square pyramid, edges with two equivalent O(3)Li3Fe2 square pyramids, and edges with two equivalent O(4)Li3FeCu square pyramids. In the fourth O site, O(4) is bonded to one Li(2), two equivalent Li(1), one Fe(1), and one Cu(2) atom to form distorted OLi3FeCu square pyramids that share corners with three equivalent O(5)Li2FeCu2 square pyramids, corners with three equivalent O(3)Li3Fe2 square pyramids,  an edgeedge with one O(5)Li2FeCu2 square pyramid,  an edgeedge with one O(4)Li3FeCu square pyramid, and edges with two equivalent O(3)Li3Fe2 square pyramids. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Fe(1), one Cu(1), and one Cu(2) atom to form distorted OLi2FeCu2 square pyramids that share  a cornercorner with one O(5)Li2FeCu2 square pyramid, corners with three equivalent O(3)Li3Fe2 square pyramids, corners with three equivalent O(4)Li3FeCu square pyramids,  an edgeedge with one O(3)Li3Fe2 square pyramid, and  an edgeedge with one O(4)Li3FeCu square pyramid. is represented by the CIF card [CIF]
data_Li4Fe2Cu3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.021
_cell_length_b   5.502
_cell_length_c   7.654
_cell_angle_alpha   102.271
_cell_angle_beta   103.062
_cell_angle_gamma   106.534
_symmetry_Int_Tables_number   1
_cell_volume   188.564
_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  0.218  0.904  0.398  1.0
  Li  Li1  1  0.394  0.294  0.772  1.0
  Li  Li2  1  0.606  0.706  0.228  1.0
  Li  Li3  1  0.782  0.096  0.602  1.0
  Fe  Fe4  1  0.094  0.678  0.687  1.0
  Fe  Fe5  1  0.906  0.322  0.313  1.0
  Cu  Cu6  1  0.000  0.500  0.000  1.0
  Cu  Cu7  1  0.696  0.891  0.902  1.0
  Cu  Cu8  1  0.304  0.109  0.098  1.0
  O  O9  1  0.051  0.053  0.854  1.0
  O  O10  1  0.338  0.658  0.916  1.0
  O  O11  1  0.113  0.309  0.538  1.0
  O  O12  1  0.450  0.915  0.685  1.0
  O  O13  1  0.212  0.519  0.237  1.0
  O  O14  1  0.788  0.481  0.763  1.0
  O  O15  1  0.550  0.085  0.315  1.0
  O  O16  1  0.887  0.691  0.462  1.0
  O  O17  1  0.662  0.342  0.084  1.0
  O  O18  1  0.949  0.947  0.146  1.0
[/CIF]
.