The structure described by Li4Fe3Co3(SnO8)2 is Spinel-derived structured and crystallizes in the monoclinic Cm space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(12), one O(3), and two equivalent O(9) atoms to form LiO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Sn(2)O6 octahedra, and corners with four equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-61°. In the second Li site, Li(2) is bonded to one O(5), one O(7), and two equivalent O(11) atoms to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with three equivalent Sn(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-66°. In the third Li site, Li(3) is bonded to one O(4), one O(8), and two equivalent O(1) atoms to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with three equivalent Sn(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-64°. In the fourth Li site, Li(4) is bonded to one O(10), one O(2), and two equivalent O(6) atoms to form LiO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with three equivalent Sn(1)O6 octahedra, and corners with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-61°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Sn(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Sn(1)O6 octahedra, edges with four equivalent Co(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 52°. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Sn(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 52-53°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with two equivalent Sn(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Sn(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 52°. In the second Co site, Co(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form CoO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Sn(2)O6 octahedra, edges with four equivalent Fe(2)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 51°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, corners with three equivalent Li(4)O4 tetrahedra, corners with three equivalent Li(3)O4 trigonal pyramids,  an edgeedge with one Fe(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-53°. In the second Sn site, Sn(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Co(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(3), one Fe(2), one Co(2), and one Sn(1) atom. In the second O site, O(2) is bonded to one Li(4), two equivalent Co(1), and one Sn(1) atom to form distorted OLiCo2Sn tetrahedra that share corners with two equivalent O(4)LiFeCo2 tetrahedra, corners with two equivalent O(6)LiFeCoSn tetrahedra,  a cornercorner with one O(10)LiFe2Co trigonal pyramid, and edges with two equivalent O(6)LiFeCoSn tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Fe(1), and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded to one Li(3), one Fe(1), and two equivalent Co(1) atoms to form distorted OLiFeCo2 tetrahedra that share corners with two equivalent O(2)LiCo2Sn tetrahedra and corners with four equivalent O(6)LiFeCoSn tetrahedra. In the fifth O site, O(5) is bonded to one Li(2), two equivalent Fe(2), and one Co(2) atom to form distorted OLiFe2Co tetrahedra that share corners with two equivalent O(12)LiFe2Sn tetrahedra, corners with three equivalent O(10)LiFe2Co trigonal pyramids, and corners with four equivalent O(9)LiFeCoSn trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(4), one Fe(1), one Co(1), and one Sn(1) atom to form distorted OLiFeCoSn tetrahedra that share  a cornercorner with one O(2)LiCo2Sn tetrahedra,  a cornercorner with one O(6)LiFeCoSn tetrahedra, corners with two equivalent O(4)LiFeCo2 tetrahedra,  a cornercorner with one O(10)LiFe2Co trigonal pyramid,  an edgeedge with one O(2)LiCo2Sn tetrahedra, and  an edgeedge with one O(6)LiFeCoSn tetrahedra. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(2), two equivalent Co(1), and one Sn(2) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Li(3), two equivalent Fe(2), and one Sn(1) atom. In the ninth O site, O(9) is bonded to one Li(1), one Fe(2), one Co(2), and one Sn(2) atom to form distorted OLiFeCoSn trigonal pyramids that share  a cornercorner with one O(12)LiFe2Sn tetrahedra, corners with two equivalent O(5)LiFe2Co tetrahedra,  a cornercorner with one O(9)LiFeCoSn trigonal pyramid,  an edgeedge with one O(12)LiFe2Sn tetrahedra,  an edgeedge with one O(10)LiFe2Co trigonal pyramid, and  an edgeedge with one O(9)LiFeCoSn trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(4), two equivalent Fe(2), and one Co(2) atom to form distorted OLiFe2Co trigonal pyramids that share  a cornercorner with one O(2)LiCo2Sn tetrahedra, corners with two equivalent O(6)LiFeCoSn tetrahedra, corners with three equivalent O(5)LiFe2Co tetrahedra,  an edgeedge with one O(12)LiFe2Sn tetrahedra, and edges with two equivalent O(9)LiFeCoSn trigonal pyramids. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(1), one Co(1), and one Sn(2) atom. In the twelfth O site, O(12) is bonded to one Li(1), two equivalent Fe(2), and one Sn(2) atom to form distorted OLiFe2Sn tetrahedra that share corners with two equivalent O(5)LiFe2Co tetrahedra, corners with two equivalent O(9)LiFeCoSn trigonal pyramids,  an edgeedge with one O(10)LiFe2Co trigonal pyramid, and edges with two equivalent O(9)LiFeCoSn trigonal pyramids. is represented by the CIF file [CIF]
data_Li4Fe3Co3(SnO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.944
_cell_length_b   5.944
_cell_length_c   9.791
_cell_angle_alpha   89.421
_cell_angle_beta   89.421
_cell_angle_gamma   60.319
_symmetry_Int_Tables_number   1
_cell_volume   300.539
_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  0.665  0.665  0.105  1.0
  Li  Li1  1  0.003  0.003  0.005  1.0
  Li  Li2  1  0.002  0.002  0.506  1.0
  Li  Li3  1  0.332  0.332  0.606  1.0
  Fe  Fe4  1  0.831  0.831  0.786  1.0
  Fe  Fe5  1  0.170  0.662  0.286  1.0
  Fe  Fe6  1  0.662  0.170  0.286  1.0
  Co  Co7  1  0.339  0.833  0.786  1.0
  Co  Co8  1  0.833  0.339  0.786  1.0
  Co  Co9  1  0.170  0.170  0.286  1.0
  Sn  Sn10  1  0.666  0.666  0.510  1.0
  Sn  Sn11  1  0.334  0.334  0.010  1.0
  O  O12  1  0.324  0.841  0.400  1.0
  O  O13  1  0.516  0.516  0.663  1.0
  O  O14  1  0.661  0.661  0.891  1.0
  O  O15  1  0.004  0.004  0.693  1.0
  O  O16  1  0.004  0.004  0.192  1.0
  O  O17  1  0.841  0.324  0.400  1.0
  O  O18  1  0.511  0.965  0.662  1.0
  O  O19  1  0.965  0.511  0.662  1.0
  O  O20  1  0.163  0.163  0.896  1.0
  O  O21  1  0.840  0.840  0.402  1.0
  O  O22  1  0.033  0.478  0.161  1.0
  O  O23  1  0.478  0.033  0.161  1.0
  O  O24  1  0.330  0.330  0.393  1.0
  O  O25  1  0.163  0.679  0.900  1.0
  O  O26  1  0.483  0.483  0.159  1.0
  O  O27  1  0.679  0.163  0.900  1.0
[/CIF]
.
The structure described by Li4Fe3Co3(SnO8)2 is Spinel-derived structured and crystallizes in the monoclinic Cm space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(12), one O(3), and two equivalent O(9) atoms to form LiO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Sn(2)O6 octahedra, and corners with four equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-61°. In the second Li site, Li(2) is bonded to one O(5), one O(7), and two equivalent O(11) atoms to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with three equivalent Sn(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-66°. In the third Li site, Li(3) is bonded to one O(4), one O(8), and two equivalent O(1) atoms to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with three equivalent Sn(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-64°. In the fourth Li site, Li(4) is bonded to one O(10), one O(2), and two equivalent O(6) atoms to form LiO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with three equivalent Sn(1)O6 octahedra, and corners with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-61°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Sn(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Sn(1)O6 octahedra, edges with four equivalent Co(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 52°. In the second Fe site, Fe(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Sn(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 52-53°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with two equivalent Sn(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  a cornercorner with one Li(3)O4 trigonal pyramid,  an edgeedge with one Sn(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 52°. In the second Co site, Co(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form CoO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Sn(2)O6 octahedra, edges with four equivalent Fe(2)O6 octahedra, and  an edgeedge with one Li(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 51°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, corners with three equivalent Li(4)O4 tetrahedra, corners with three equivalent Li(3)O4 trigonal pyramids,  an edgeedge with one Fe(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-53°. In the second Sn site, Sn(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Co(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(3), one Fe(2), one Co(2), and one Sn(1) atom. In the second O site, O(2) is bonded to one Li(4), two equivalent Co(1), and one Sn(1) atom to form distorted OLiCo2Sn tetrahedra that share corners with two equivalent O(4)LiFeCo2 tetrahedra, corners with two equivalent O(6)LiFeCoSn tetrahedra,  a cornercorner with one O(10)LiFe2Co trigonal pyramid, and edges with two equivalent O(6)LiFeCoSn tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Fe(1), and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded to one Li(3), one Fe(1), and two equivalent Co(1) atoms to form distorted OLiFeCo2 tetrahedra that share corners with two equivalent O(2)LiCo2Sn tetrahedra and corners with four equivalent O(6)LiFeCoSn tetrahedra. In the fifth O site, O(5) is bonded to one Li(2), two equivalent Fe(2), and one Co(2) atom to form distorted OLiFe2Co tetrahedra that share corners with two equivalent O(12)LiFe2Sn tetrahedra, corners with three equivalent O(10)LiFe2Co trigonal pyramids, and corners with four equivalent O(9)LiFeCoSn trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(4), one Fe(1), one Co(1), and one Sn(1) atom to form distorted OLiFeCoSn tetrahedra that share  a cornercorner with one O(2)LiCo2Sn tetrahedra,  a cornercorner with one O(6)LiFeCoSn tetrahedra, corners with two equivalent O(4)LiFeCo2 tetrahedra,  a cornercorner with one O(10)LiFe2Co trigonal pyramid,  an edgeedge with one O(2)LiCo2Sn tetrahedra, and  an edgeedge with one O(6)LiFeCoSn tetrahedra. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(2), two equivalent Co(1), and one Sn(2) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Li(3), two equivalent Fe(2), and one Sn(1) atom. In the ninth O site, O(9) is bonded to one Li(1), one Fe(2), one Co(2), and one Sn(2) atom to form distorted OLiFeCoSn trigonal pyramids that share  a cornercorner with one O(12)LiFe2Sn tetrahedra, corners with two equivalent O(5)LiFe2Co tetrahedra,  a cornercorner with one O(9)LiFeCoSn trigonal pyramid,  an edgeedge with one O(12)LiFe2Sn tetrahedra,  an edgeedge with one O(10)LiFe2Co trigonal pyramid, and  an edgeedge with one O(9)LiFeCoSn trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(4), two equivalent Fe(2), and one Co(2) atom to form distorted OLiFe2Co trigonal pyramids that share  a cornercorner with one O(2)LiCo2Sn tetrahedra, corners with two equivalent O(6)LiFeCoSn tetrahedra, corners with three equivalent O(5)LiFe2Co tetrahedra,  an edgeedge with one O(12)LiFe2Sn tetrahedra, and edges with two equivalent O(9)LiFeCoSn trigonal pyramids. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(1), one Co(1), and one Sn(2) atom. In the twelfth O site, O(12) is bonded to one Li(1), two equivalent Fe(2), and one Sn(2) atom to form distorted OLiFe2Sn tetrahedra that share corners with two equivalent O(5)LiFe2Co tetrahedra, corners with two equivalent O(9)LiFeCoSn trigonal pyramids,  an edgeedge with one O(10)LiFe2Co trigonal pyramid, and edges with two equivalent O(9)LiFeCoSn trigonal pyramids. is represented by the CIF file [CIF]
data_Li4Fe3Co3(SnO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.944
_cell_length_b   5.944
_cell_length_c   9.791
_cell_angle_alpha   89.421
_cell_angle_beta   89.421
_cell_angle_gamma   60.319
_symmetry_Int_Tables_number   1
_cell_volume   300.539
_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  0.665  0.665  0.105  1.0
  Li  Li1  1  0.003  0.003  0.005  1.0
  Li  Li2  1  0.002  0.002  0.506  1.0
  Li  Li3  1  0.332  0.332  0.606  1.0
  Fe  Fe4  1  0.831  0.831  0.786  1.0
  Fe  Fe5  1  0.170  0.662  0.286  1.0
  Fe  Fe6  1  0.662  0.170  0.286  1.0
  Co  Co7  1  0.339  0.833  0.786  1.0
  Co  Co8  1  0.833  0.339  0.786  1.0
  Co  Co9  1  0.170  0.170  0.286  1.0
  Sn  Sn10  1  0.666  0.666  0.510  1.0
  Sn  Sn11  1  0.334  0.334  0.010  1.0
  O  O12  1  0.324  0.841  0.400  1.0
  O  O13  1  0.516  0.516  0.663  1.0
  O  O14  1  0.661  0.661  0.891  1.0
  O  O15  1  0.004  0.004  0.693  1.0
  O  O16  1  0.004  0.004  0.192  1.0
  O  O17  1  0.841  0.324  0.400  1.0
  O  O18  1  0.511  0.965  0.662  1.0
  O  O19  1  0.965  0.511  0.662  1.0
  O  O20  1  0.163  0.163  0.896  1.0
  O  O21  1  0.840  0.840  0.402  1.0
  O  O22  1  0.033  0.478  0.161  1.0
  O  O23  1  0.478  0.033  0.161  1.0
  O  O24  1  0.330  0.330  0.393  1.0
  O  O25  1  0.163  0.679  0.900  1.0
  O  O26  1  0.483  0.483  0.159  1.0
  O  O27  1  0.679  0.163  0.900  1.0
[/CIF]
.