The material structure described by Li2Mn3FeO8 is Spinel-derived structured and 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(1), one O(14), one O(15), and one O(16) atom to form LiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Mn(6)O6 octahedra, and corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-64°. In the second Li site, Li(2) is bonded to one O(11), one O(12), one O(13), and one O(2) atom to form LiO4 tetrahedra that share  a cornercorner with one Mn(4)O6 octahedra,  a cornercorner with one Mn(5)O6 octahedra,  a cornercorner with one Mn(6)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, and corners with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-68°. In the third Li site, Li(3) is bonded to one O(10), one O(4), one O(7), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Mn(4)O6 octahedra,  a cornercorner with one Mn(5)O6 octahedra,  a cornercorner with one Mn(6)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-68°. In the fourth Li site, Li(4) is bonded in a rectangular see-saw-like geometry to one O(3), one O(5), one O(6), and one O(8) atom. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(12), one O(13), one O(3), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 51-52°. In the second Mn site, Mn(2) is bonded to one O(1), one O(11), one O(12), one O(3), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 47-54°. In the third Mn site, Mn(3) is bonded to one O(1), one O(10), one O(11), one O(13), one O(3), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 54-56°. In the fourth Mn site, Mn(4) is bonded to one O(14), one O(15), one O(2), one O(4), one O(5), and one O(6) atom to form MnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Mn(5)O6 octahedra, and edges with two equivalent Mn(6)O6 octahedra. The corner-sharing octahedral tilt angles are 51°. In the fifth Mn site, Mn(5) is bonded to one O(14), one O(16), one O(2), one O(4), one O(5), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra, and edges with two equivalent Mn(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. In the sixth Mn site, Mn(6) is bonded to one O(15), one O(16), one O(2), one O(4), one O(6), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra, and edges with two equivalent Mn(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-54°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(14), one O(15), one O(16), one O(7), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(3)O4 trigonal pyramids,  an edgeedge with one Mn(4)O6 octahedra,  an edgeedge with one Mn(5)O6 octahedra, and  an edgeedge with one Mn(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-56°. In the second Fe site, Fe(2) is bonded to one O(11), one O(12), one O(13), one O(5), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Mn(6)O6 octahedra, corners with three equivalent Li(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-54°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(1), one Mn(1), one Mn(2), and one Mn(3) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(2), one Mn(4), one Mn(5), and one Mn(6) atom. In the third O site, O(3) is bonded to one Li(4), one Mn(1), one Mn(2), and one Mn(3) atom to form distorted corner-sharing OLiMn3 tetrahedra. In the fourth O site, O(4) is bonded to one Li(3), one Mn(4), one Mn(5), and one Mn(6) atom to form distorted corner-sharing OLiMn3 tetrahedra. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Li(4), one Mn(4), one Mn(5), and one Fe(2) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(4), one Mn(4), one Mn(6), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(2), one Mn(3), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Li(4), one Mn(5), one Mn(6), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(1), one Mn(2), and one Fe(1) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(1), one Mn(3), and one Fe(1) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Mn(2), one Mn(3), and one Fe(2) atom to form distorted OLiMn2Fe trigonal pyramids that share  a cornercorner with one O(12)LiMn2Fe tetrahedra,  a cornercorner with one O(13)LiMn2Fe tetrahedra, corners with two equivalent O(3)LiMn3 tetrahedra,  an edgeedge with one O(12)LiMn2Fe tetrahedra, and  an edgeedge with one O(13)LiMn2Fe tetrahedra. In the twelfth O site, O(12) is bonded to one Li(2), one Mn(1), one Mn(2), and one Fe(2) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(13)LiMn2Fe tetrahedra, corners with two equivalent O(3)LiMn3 tetrahedra,  a cornercorner with one O(11)LiMn2Fe trigonal pyramid,  an edgeedge with one O(13)LiMn2Fe tetrahedra, and  an edgeedge with one O(11)LiMn2Fe trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Li(2), one Mn(1), one Mn(3), and one Fe(2) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(12)LiMn2Fe tetrahedra, corners with two equivalent O(3)LiMn3 tetrahedra,  a cornercorner with one O(11)LiMn2Fe trigonal pyramid,  an edgeedge with one O(12)LiMn2Fe tetrahedra, and  an edgeedge with one O(11)LiMn2Fe trigonal pyramid. In the fourteenth O site, O(14) is bonded to one Li(1), one Mn(4), one Mn(5), and one Fe(1) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(15)LiMn2Fe tetrahedra,  a cornercorner with one O(16)LiMn2Fe tetrahedra, corners with two equivalent O(4)LiMn3 tetrahedra,  an edgeedge with one O(15)LiMn2Fe tetrahedra, and  an edgeedge with one O(16)LiMn2Fe tetrahedra. In the fifteenth O site, O(15) is bonded to one Li(1), one Mn(4), one Mn(6), and one Fe(1) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(14)LiMn2Fe tetrahedra,  a cornercorner with one O(16)LiMn2Fe tetrahedra, corners with two equivalent O(4)LiMn3 tetrahedra,  an edgeedge with one O(14)LiMn2Fe tetrahedra, and  an edgeedge with one O(16)LiMn2Fe tetrahedra. In the sixteenth O site, O(16) is bonded to one Li(1), one Mn(5), one Mn(6), and one Fe(1) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(14)LiMn2Fe tetrahedra,  a cornercorner with one O(15)LiMn2Fe tetrahedra, corners with two equivalent O(4)LiMn3 tetrahedra,  an edgeedge with one O(14)LiMn2Fe tetrahedra, and  an edgeedge with one O(15)LiMn2Fe tetrahedra. is represented by the CIF file [CIF]
data_Li2Mn3FeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.814
_cell_length_b   5.871
_cell_length_c   9.525
_cell_angle_alpha   89.942
_cell_angle_beta   90.544
_cell_angle_gamma   61.472
_symmetry_Int_Tables_number   1
_cell_volume   285.649
_cell_formula_units_Z   2
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  0.672  0.664  0.888  1.0
  Li  Li1  1  0.329  0.336  0.392  1.0
  Li  Li2  1  0.005  0.006  0.998  1.0
  Li  Li3  1  0.996  0.992  0.497  1.0
  Mn  Mn4  1  0.835  0.829  0.215  1.0
  Mn  Mn5  1  0.342  0.833  0.214  1.0
  Mn  Mn6  1  0.828  0.339  0.216  1.0
  Mn  Mn7  1  0.167  0.170  0.713  1.0
  Mn  Mn8  1  0.169  0.659  0.718  1.0
  Mn  Mn9  1  0.658  0.169  0.713  1.0
  Fe  Fe10  1  0.341  0.325  0.991  1.0
  Fe  Fe11  1  0.654  0.673  0.493  1.0
  O  O12  1  0.662  0.675  0.107  1.0
  O  O13  1  0.345  0.304  0.601  1.0
  O  O14  1  0.010  0.993  0.309  1.0
  O  O15  1  0.983  0.028  0.813  1.0
  O  O16  1  0.316  0.845  0.605  1.0
  O  O17  1  0.837  0.321  0.598  1.0
  O  O18  1  0.190  0.146  0.100  1.0
  O  O19  1  0.828  0.842  0.605  1.0
  O  O20  1  0.160  0.680  0.102  1.0
  O  O21  1  0.686  0.156  0.103  1.0
  O  O22  1  0.489  0.547  0.344  1.0
  O  O23  1  0.527  0.965  0.332  1.0
  O  O24  1  0.957  0.527  0.335  1.0
  O  O25  1  0.043  0.471  0.835  1.0
  O  O26  1  0.480  0.036  0.832  1.0
  O  O27  1  0.491  0.470  0.834  1.0
[/CIF]
.
The material structure described by Li2Mn3FeO8 is Spinel-derived structured and 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(1), one O(14), one O(15), and one O(16) atom to form LiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Mn(6)O6 octahedra, and corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-64°. In the second Li site, Li(2) is bonded to one O(11), one O(12), one O(13), and one O(2) atom to form LiO4 tetrahedra that share  a cornercorner with one Mn(4)O6 octahedra,  a cornercorner with one Mn(5)O6 octahedra,  a cornercorner with one Mn(6)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, and corners with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-68°. In the third Li site, Li(3) is bonded to one O(10), one O(4), one O(7), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Mn(4)O6 octahedra,  a cornercorner with one Mn(5)O6 octahedra,  a cornercorner with one Mn(6)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-68°. In the fourth Li site, Li(4) is bonded in a rectangular see-saw-like geometry to one O(3), one O(5), one O(6), and one O(8) atom. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(12), one O(13), one O(3), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 51-52°. In the second Mn site, Mn(2) is bonded to one O(1), one O(11), one O(12), one O(3), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 47-54°. In the third Mn site, Mn(3) is bonded to one O(1), one O(10), one O(11), one O(13), one O(3), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 54-56°. In the fourth Mn site, Mn(4) is bonded to one O(14), one O(15), one O(2), one O(4), one O(5), and one O(6) atom to form MnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Mn(5)O6 octahedra, and edges with two equivalent Mn(6)O6 octahedra. The corner-sharing octahedral tilt angles are 51°. In the fifth Mn site, Mn(5) is bonded to one O(14), one O(16), one O(2), one O(4), one O(5), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra, and edges with two equivalent Mn(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. In the sixth Mn site, Mn(6) is bonded to one O(15), one O(16), one O(2), one O(4), one O(6), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra, and edges with two equivalent Mn(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-54°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(14), one O(15), one O(16), one O(7), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(3)O4 trigonal pyramids,  an edgeedge with one Mn(4)O6 octahedra,  an edgeedge with one Mn(5)O6 octahedra, and  an edgeedge with one Mn(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-56°. In the second Fe site, Fe(2) is bonded to one O(11), one O(12), one O(13), one O(5), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Mn(6)O6 octahedra, corners with three equivalent Li(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-54°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(1), one Mn(1), one Mn(2), and one Mn(3) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(2), one Mn(4), one Mn(5), and one Mn(6) atom. In the third O site, O(3) is bonded to one Li(4), one Mn(1), one Mn(2), and one Mn(3) atom to form distorted corner-sharing OLiMn3 tetrahedra. In the fourth O site, O(4) is bonded to one Li(3), one Mn(4), one Mn(5), and one Mn(6) atom to form distorted corner-sharing OLiMn3 tetrahedra. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Li(4), one Mn(4), one Mn(5), and one Fe(2) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(4), one Mn(4), one Mn(6), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(2), one Mn(3), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Li(4), one Mn(5), one Mn(6), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(1), one Mn(2), and one Fe(1) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(1), one Mn(3), and one Fe(1) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Mn(2), one Mn(3), and one Fe(2) atom to form distorted OLiMn2Fe trigonal pyramids that share  a cornercorner with one O(12)LiMn2Fe tetrahedra,  a cornercorner with one O(13)LiMn2Fe tetrahedra, corners with two equivalent O(3)LiMn3 tetrahedra,  an edgeedge with one O(12)LiMn2Fe tetrahedra, and  an edgeedge with one O(13)LiMn2Fe tetrahedra. In the twelfth O site, O(12) is bonded to one Li(2), one Mn(1), one Mn(2), and one Fe(2) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(13)LiMn2Fe tetrahedra, corners with two equivalent O(3)LiMn3 tetrahedra,  a cornercorner with one O(11)LiMn2Fe trigonal pyramid,  an edgeedge with one O(13)LiMn2Fe tetrahedra, and  an edgeedge with one O(11)LiMn2Fe trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Li(2), one Mn(1), one Mn(3), and one Fe(2) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(12)LiMn2Fe tetrahedra, corners with two equivalent O(3)LiMn3 tetrahedra,  a cornercorner with one O(11)LiMn2Fe trigonal pyramid,  an edgeedge with one O(12)LiMn2Fe tetrahedra, and  an edgeedge with one O(11)LiMn2Fe trigonal pyramid. In the fourteenth O site, O(14) is bonded to one Li(1), one Mn(4), one Mn(5), and one Fe(1) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(15)LiMn2Fe tetrahedra,  a cornercorner with one O(16)LiMn2Fe tetrahedra, corners with two equivalent O(4)LiMn3 tetrahedra,  an edgeedge with one O(15)LiMn2Fe tetrahedra, and  an edgeedge with one O(16)LiMn2Fe tetrahedra. In the fifteenth O site, O(15) is bonded to one Li(1), one Mn(4), one Mn(6), and one Fe(1) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(14)LiMn2Fe tetrahedra,  a cornercorner with one O(16)LiMn2Fe tetrahedra, corners with two equivalent O(4)LiMn3 tetrahedra,  an edgeedge with one O(14)LiMn2Fe tetrahedra, and  an edgeedge with one O(16)LiMn2Fe tetrahedra. In the sixteenth O site, O(16) is bonded to one Li(1), one Mn(5), one Mn(6), and one Fe(1) atom to form distorted OLiMn2Fe tetrahedra that share  a cornercorner with one O(14)LiMn2Fe tetrahedra,  a cornercorner with one O(15)LiMn2Fe tetrahedra, corners with two equivalent O(4)LiMn3 tetrahedra,  an edgeedge with one O(14)LiMn2Fe tetrahedra, and  an edgeedge with one O(15)LiMn2Fe tetrahedra. is represented by the CIF file [CIF]
data_Li2Mn3FeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.814
_cell_length_b   5.871
_cell_length_c   9.525
_cell_angle_alpha   89.942
_cell_angle_beta   90.544
_cell_angle_gamma   61.472
_symmetry_Int_Tables_number   1
_cell_volume   285.649
_cell_formula_units_Z   2
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  0.672  0.664  0.888  1.0
  Li  Li1  1  0.329  0.336  0.392  1.0
  Li  Li2  1  0.005  0.006  0.998  1.0
  Li  Li3  1  0.996  0.992  0.497  1.0
  Mn  Mn4  1  0.835  0.829  0.215  1.0
  Mn  Mn5  1  0.342  0.833  0.214  1.0
  Mn  Mn6  1  0.828  0.339  0.216  1.0
  Mn  Mn7  1  0.167  0.170  0.713  1.0
  Mn  Mn8  1  0.169  0.659  0.718  1.0
  Mn  Mn9  1  0.658  0.169  0.713  1.0
  Fe  Fe10  1  0.341  0.325  0.991  1.0
  Fe  Fe11  1  0.654  0.673  0.493  1.0
  O  O12  1  0.662  0.675  0.107  1.0
  O  O13  1  0.345  0.304  0.601  1.0
  O  O14  1  0.010  0.993  0.309  1.0
  O  O15  1  0.983  0.028  0.813  1.0
  O  O16  1  0.316  0.845  0.605  1.0
  O  O17  1  0.837  0.321  0.598  1.0
  O  O18  1  0.190  0.146  0.100  1.0
  O  O19  1  0.828  0.842  0.605  1.0
  O  O20  1  0.160  0.680  0.102  1.0
  O  O21  1  0.686  0.156  0.103  1.0
  O  O22  1  0.489  0.547  0.344  1.0
  O  O23  1  0.527  0.965  0.332  1.0
  O  O24  1  0.957  0.527  0.335  1.0
  O  O25  1  0.043  0.471  0.835  1.0
  O  O26  1  0.480  0.036  0.832  1.0
  O  O27  1  0.491  0.470  0.834  1.0
[/CIF]
.