The structure described by Li4Mn2Cu3O10 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to one O(1), one O(5), two equivalent O(3), and two equivalent O(4) atoms. 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 Mn(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-16°. Mn(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with three equivalent Li(2)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Li(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-16°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent O(5) atoms. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Mn(1), and two equivalent Cu(2) atoms. In the second O site, O(2) is bonded to two equivalent Li(2), one Mn(1), one Cu(1), and two equivalent Cu(2) atoms to form distorted OLi2MnCu3 octahedra that share  a cornercorner with one O(2)Li2MnCu3 octahedra,  a cornercorner with one O(5)Li2MnCu2 square pyramid,  a cornercorner with one O(4)Li3MnCu square pyramid, corners with two equivalent O(3)Li3Mn2 square pyramids, edges with two equivalent O(2)Li2MnCu3 octahedra,  an edgeedge with one O(3)Li3Mn2 square pyramid, edges with two equivalent O(4)Li3MnCu square pyramids, and edges with three equivalent O(5)Li2MnCu2 square pyramids. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded to one Li(2), two equivalent Li(1), and two equivalent Mn(1) atoms to form distorted OLi3Mn2 square pyramids that share corners with two equivalent O(2)Li2MnCu3 octahedra, corners with three equivalent O(5)Li2MnCu2 square pyramids, corners with three equivalent O(4)Li3MnCu square pyramids,  an edgeedge with one O(2)Li2MnCu3 octahedra,  an edgeedge with one O(5)Li2MnCu2 square pyramid, edges with two equivalent O(3)Li3Mn2 square pyramids, and edges with two equivalent O(4)Li3MnCu square pyramids. The corner-sharing octahedral tilt angles range from 6-16°. In the fourth O site, O(4) is bonded to one Li(2), two equivalent Li(1), one Mn(1), and one Cu(2) atom to form OLi3MnCu square pyramids that share  a cornercorner with one O(2)Li2MnCu3 octahedra, corners with three equivalent O(5)Li2MnCu2 square pyramids, corners with three equivalent O(3)Li3Mn2 square pyramids, edges with two equivalent O(2)Li2MnCu3 octahedra,  an edgeedge with one O(5)Li2MnCu2 square pyramid,  an edgeedge with one O(4)Li3MnCu square pyramid, and edges with two equivalent O(3)Li3Mn2 square pyramids. The corner-sharing octahedral tilt angles are 11°. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Mn(1), one Cu(1), and one Cu(2) atom to form distorted OLi2MnCu2 square pyramids that share  a cornercorner with one O(2)Li2MnCu3 octahedra,  a cornercorner with one O(5)Li2MnCu2 square pyramid, corners with three equivalent O(3)Li3Mn2 square pyramids, corners with three equivalent O(4)Li3MnCu square pyramids, edges with three equivalent O(2)Li2MnCu3 octahedra,  an edgeedge with one O(3)Li3Mn2 square pyramid, and  an edgeedge with one O(4)Li3MnCu square pyramid. The corner-sharing octahedral tilt angles are 8°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li4Mn2Cu3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.043
_cell_length_b   5.387
_cell_length_c   7.603
_cell_angle_alpha   104.480
_cell_angle_beta   102.757
_cell_angle_gamma   105.400
_symmetry_Int_Tables_number   1
_cell_volume   183.473
_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  0.223  0.900  0.397  1.0
  Li  Li1  1  0.396  0.293  0.776  1.0
  Li  Li2  1  0.604  0.707  0.224  1.0
  Li  Li3  1  0.777  0.100  0.603  1.0
  Mn  Mn4  1  0.096  0.676  0.691  1.0
  Mn  Mn5  1  0.904  0.324  0.309  1.0
  Cu  Cu6  1  0.000  0.500  0.000  1.0
  Cu  Cu7  1  0.694  0.883  0.896  1.0
  Cu  Cu8  1  0.306  0.117  0.104  1.0
  O  O9  1  0.054  0.026  0.841  1.0
  O  O10  1  0.341  0.663  0.924  1.0
  O  O11  1  0.116  0.331  0.548  1.0
  O  O12  1  0.447  0.906  0.678  1.0
  O  O13  1  0.215  0.521  0.236  1.0
  O  O14  1  0.785  0.479  0.764  1.0
  O  O15  1  0.553  0.094  0.322  1.0
  O  O16  1  0.884  0.669  0.452  1.0
  O  O17  1  0.659  0.337  0.076  1.0
  O  O18  1  0.946  0.974  0.159  1.0
[/CIF]
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The structure described by Li4Mn2Cu3O10 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to one O(1), one O(5), two equivalent O(3), and two equivalent O(4) atoms. 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 Mn(1)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-16°. Mn(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with three equivalent Li(2)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Li(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 10-16°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent O(5) atoms. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Mn(1), and two equivalent Cu(2) atoms. In the second O site, O(2) is bonded to two equivalent Li(2), one Mn(1), one Cu(1), and two equivalent Cu(2) atoms to form distorted OLi2MnCu3 octahedra that share  a cornercorner with one O(2)Li2MnCu3 octahedra,  a cornercorner with one O(5)Li2MnCu2 square pyramid,  a cornercorner with one O(4)Li3MnCu square pyramid, corners with two equivalent O(3)Li3Mn2 square pyramids, edges with two equivalent O(2)Li2MnCu3 octahedra,  an edgeedge with one O(3)Li3Mn2 square pyramid, edges with two equivalent O(4)Li3MnCu square pyramids, and edges with three equivalent O(5)Li2MnCu2 square pyramids. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded to one Li(2), two equivalent Li(1), and two equivalent Mn(1) atoms to form distorted OLi3Mn2 square pyramids that share corners with two equivalent O(2)Li2MnCu3 octahedra, corners with three equivalent O(5)Li2MnCu2 square pyramids, corners with three equivalent O(4)Li3MnCu square pyramids,  an edgeedge with one O(2)Li2MnCu3 octahedra,  an edgeedge with one O(5)Li2MnCu2 square pyramid, edges with two equivalent O(3)Li3Mn2 square pyramids, and edges with two equivalent O(4)Li3MnCu square pyramids. The corner-sharing octahedral tilt angles range from 6-16°. In the fourth O site, O(4) is bonded to one Li(2), two equivalent Li(1), one Mn(1), and one Cu(2) atom to form OLi3MnCu square pyramids that share  a cornercorner with one O(2)Li2MnCu3 octahedra, corners with three equivalent O(5)Li2MnCu2 square pyramids, corners with three equivalent O(3)Li3Mn2 square pyramids, edges with two equivalent O(2)Li2MnCu3 octahedra,  an edgeedge with one O(5)Li2MnCu2 square pyramid,  an edgeedge with one O(4)Li3MnCu square pyramid, and edges with two equivalent O(3)Li3Mn2 square pyramids. The corner-sharing octahedral tilt angles are 11°. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Mn(1), one Cu(1), and one Cu(2) atom to form distorted OLi2MnCu2 square pyramids that share  a cornercorner with one O(2)Li2MnCu3 octahedra,  a cornercorner with one O(5)Li2MnCu2 square pyramid, corners with three equivalent O(3)Li3Mn2 square pyramids, corners with three equivalent O(4)Li3MnCu square pyramids, edges with three equivalent O(2)Li2MnCu3 octahedra,  an edgeedge with one O(3)Li3Mn2 square pyramid, and  an edgeedge with one O(4)Li3MnCu square pyramid. The corner-sharing octahedral tilt angles are 8°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li4Mn2Cu3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.043
_cell_length_b   5.387
_cell_length_c   7.603
_cell_angle_alpha   104.480
_cell_angle_beta   102.757
_cell_angle_gamma   105.400
_symmetry_Int_Tables_number   1
_cell_volume   183.473
_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  0.223  0.900  0.397  1.0
  Li  Li1  1  0.396  0.293  0.776  1.0
  Li  Li2  1  0.604  0.707  0.224  1.0
  Li  Li3  1  0.777  0.100  0.603  1.0
  Mn  Mn4  1  0.096  0.676  0.691  1.0
  Mn  Mn5  1  0.904  0.324  0.309  1.0
  Cu  Cu6  1  0.000  0.500  0.000  1.0
  Cu  Cu7  1  0.694  0.883  0.896  1.0
  Cu  Cu8  1  0.306  0.117  0.104  1.0
  O  O9  1  0.054  0.026  0.841  1.0
  O  O10  1  0.341  0.663  0.924  1.0
  O  O11  1  0.116  0.331  0.548  1.0
  O  O12  1  0.447  0.906  0.678  1.0
  O  O13  1  0.215  0.521  0.236  1.0
  O  O14  1  0.785  0.479  0.764  1.0
  O  O15  1  0.553  0.094  0.322  1.0
  O  O16  1  0.884  0.669  0.452  1.0
  O  O17  1  0.659  0.337  0.076  1.0
  O  O18  1  0.946  0.974  0.159  1.0
[/CIF]
.