The material described by Li3Fe2SnO6 is alpha Po-derived structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form LiO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-3°. In the second Li site, Li(2) is bonded to one O(3), two equivalent O(2), and three equivalent O(1) atoms to form LiO6 octahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with five equivalent Fe(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. Fe(1) is bonded to one O(3), two equivalent O(1), and three equivalent O(2) atoms to form FeO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra, corners with five equivalent Li(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-9°. Sn(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form SnO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Li(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-5°. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Li(2), two equivalent Fe(1), and one Sn(1) atom to form OLi3Fe2Sn octahedra that share  a cornercorner with one O(1)Li3Fe2Sn octahedra,  a cornercorner with one O(3)Li3FeSn2 octahedra, corners with four equivalent O(2)Li3Fe3 octahedra, edges with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(2)Li3Fe3 octahedra, and edges with four equivalent O(3)Li3FeSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded to one Li(1), two equivalent Li(2), and three equivalent Fe(1) atoms to form OLi3Fe3 octahedra that share  a cornercorner with one O(2)Li3Fe3 octahedra,  a cornercorner with one O(3)Li3FeSn2 octahedra, corners with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(2)Li3Fe3 octahedra, and edges with four equivalent O(3)Li3FeSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the third O site, O(3) is bonded to one Li(2), two equivalent Li(1), one Fe(1), and two equivalent Sn(1) atoms to form OLi3FeSn2 octahedra that share  a cornercorner with one O(1)Li3Fe2Sn octahedra,  a cornercorner with one O(2)Li3Fe3 octahedra, corners with four equivalent O(3)Li3FeSn2 octahedra, edges with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(2)Li3Fe3 octahedra, and edges with four equivalent O(3)Li3FeSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3Fe2SnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.796
_cell_length_b   6.796
_cell_length_c   6.123
_cell_angle_alpha   77.315
_cell_angle_beta   77.315
_cell_angle_gamma   26.152
_symmetry_Int_Tables_number   1
_cell_volume   121.418
_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  0.000  0.000  0.000  1.0
  Li  Li1  1  0.673  0.673  0.668  1.0
  Li  Li2  1  0.327  0.327  0.332  1.0
  Fe  Fe3  1  0.674  0.674  0.149  1.0
  Fe  Fe4  1  0.326  0.326  0.851  1.0
  Sn  Sn5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.161  0.161  0.402  1.0
  O  O7  1  0.833  0.833  0.075  1.0
  O  O8  1  0.839  0.839  0.598  1.0
  O  O9  1  0.498  0.498  0.738  1.0
  O  O10  1  0.502  0.502  0.262  1.0
  O  O11  1  0.167  0.167  0.925  1.0
[/CIF]
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The material described by Li3Fe2SnO6 is alpha Po-derived structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form LiO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-3°. In the second Li site, Li(2) is bonded to one O(3), two equivalent O(2), and three equivalent O(1) atoms to form LiO6 octahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with five equivalent Fe(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. Fe(1) is bonded to one O(3), two equivalent O(1), and three equivalent O(2) atoms to form FeO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra, corners with five equivalent Li(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-9°. Sn(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form SnO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with four equivalent Li(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with four equivalent Li(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-5°. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Li(2), two equivalent Fe(1), and one Sn(1) atom to form OLi3Fe2Sn octahedra that share  a cornercorner with one O(1)Li3Fe2Sn octahedra,  a cornercorner with one O(3)Li3FeSn2 octahedra, corners with four equivalent O(2)Li3Fe3 octahedra, edges with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(2)Li3Fe3 octahedra, and edges with four equivalent O(3)Li3FeSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded to one Li(1), two equivalent Li(2), and three equivalent Fe(1) atoms to form OLi3Fe3 octahedra that share  a cornercorner with one O(2)Li3Fe3 octahedra,  a cornercorner with one O(3)Li3FeSn2 octahedra, corners with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(2)Li3Fe3 octahedra, and edges with four equivalent O(3)Li3FeSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the third O site, O(3) is bonded to one Li(2), two equivalent Li(1), one Fe(1), and two equivalent Sn(1) atoms to form OLi3FeSn2 octahedra that share  a cornercorner with one O(1)Li3Fe2Sn octahedra,  a cornercorner with one O(2)Li3Fe3 octahedra, corners with four equivalent O(3)Li3FeSn2 octahedra, edges with four equivalent O(1)Li3Fe2Sn octahedra, edges with four equivalent O(2)Li3Fe3 octahedra, and edges with four equivalent O(3)Li3FeSn2 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li3Fe2SnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.796
_cell_length_b   6.796
_cell_length_c   6.123
_cell_angle_alpha   77.315
_cell_angle_beta   77.315
_cell_angle_gamma   26.152
_symmetry_Int_Tables_number   1
_cell_volume   121.418
_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  0.000  0.000  0.000  1.0
  Li  Li1  1  0.673  0.673  0.668  1.0
  Li  Li2  1  0.327  0.327  0.332  1.0
  Fe  Fe3  1  0.674  0.674  0.149  1.0
  Fe  Fe4  1  0.326  0.326  0.851  1.0
  Sn  Sn5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.161  0.161  0.402  1.0
  O  O7  1  0.833  0.833  0.075  1.0
  O  O8  1  0.839  0.839  0.598  1.0
  O  O9  1  0.498  0.498  0.738  1.0
  O  O10  1  0.502  0.502  0.262  1.0
  O  O11  1  0.167  0.167  0.925  1.0
[/CIF]
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