Li4Fe5Sn3O16 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(11), one O(12), one O(15), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Sn(1)O6 octahedra,  a cornercorner with one Sn(2)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, and corners with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-65°. In the second Li site, Li(2) is bonded to one O(14), one O(16), one O(5), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra,  a cornercorner with one Sn(3)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Sn(1)O6 octahedra, and  an edgeedge with one Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-68°. In the third Li site, Li(3) is bonded to one O(1), one O(10), one O(4), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Sn(1)O6 octahedra,  a cornercorner with one Sn(2)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra,  an edgeedge with one Fe(5)O6 octahedra, and  an edgeedge with one Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. In the fourth Li site, Li(4) is bonded to one O(13), one O(2), one O(7), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra,  a cornercorner with one Sn(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-63°. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(4)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, corners with three equivalent Li(3)O4 tetrahedra, corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Sn(1)O6 octahedra, and  an edgeedge with one Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-56°. In the second Fe site, Fe(2) is bonded to one O(14), one O(16), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with two equivalent Sn(2)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 49°. In the third Fe site, Fe(3) is bonded to one O(11), one O(12), one O(14), one O(15), one O(16), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Fe(4)O6 octahedra,  an edgeedge with one Fe(5)O6 octahedra, and  an edgeedge with one Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-54°. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), and one O(5) atom to form FeO6 octahedra that share corners with two equivalent Fe(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 Fe(3)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, edges with two equivalent Sn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the fifth Fe site, Fe(5) is bonded to one O(10), one O(12), one O(13), one O(15), one O(5), and one O(6) atom to form FeO6 octahedra that share corners with two equivalent Fe(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 Fe(3)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, edges with two equivalent Sn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-53°. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(14), one O(2), one O(3), one O(4), one O(7), and one O(9) atom to form SnO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Sn(2)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 53°. In the second Sn site, Sn(2) is bonded to one O(16), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form SnO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 53-54°. In the third Sn site, Sn(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(5), and one O(6) atom to form SnO6 octahedra that share corners with two equivalent Fe(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 Fe(3)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-56°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Fe(1), one Fe(4), and one Sn(3) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Fe(1), one Sn(1), and one Sn(2) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Fe(2), one Sn(1), and one Sn(2) atom. In the fourth O site, O(4) is bonded to one Li(3), one Fe(2), one Sn(1), and one Sn(2) atom to form distorted corner-sharing OLiFeSn2 tetrahedra. In the fifth O site, O(5) is bonded to one Li(2), one Fe(4), one Fe(5), and one Sn(3) atom to form distorted OLiFe2Sn tetrahedra that share corners with two equivalent O(11)LiFe2Sn tetrahedra, corners with two equivalent O(12)LiFe2Sn tetrahedra, and corners with two equivalent O(15)LiFe3 tetrahedra. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(3), one Fe(1), one Fe(5), and one Sn(3) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Fe(1), one Fe(2), and one Sn(1) atom. In the eighth O site, O(8) is bonded to one Li(4), one Fe(1), one Fe(2), and one Sn(2) atom to form distorted corner-sharing OLiFe2Sn tetrahedra. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(3), one Sn(1), and one Sn(2) atom. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Fe(1), one Fe(4), and one Fe(5) atom. In the eleventh O site, O(11) is bonded to one Li(1), one Fe(3), one Fe(4), and one Sn(3) atom to form distorted OLiFe2Sn tetrahedra that share  a cornercorner with one O(12)LiFe2Sn tetrahedra,  a cornercorner with one O(15)LiFe3 tetrahedra, corners with two equivalent O(5)LiFe2Sn tetrahedra,  an edgeedge with one O(12)LiFe2Sn tetrahedra, and  an edgeedge with one O(15)LiFe3 tetrahedra. In the twelfth O site, O(12) is bonded to one Li(1), one Fe(3), one Fe(5), and one Sn(3) atom to form distorted OLiFe2Sn tetrahedra that share  a cornercorner with one O(11)LiFe2Sn tetrahedra,  a cornercorner with one O(15)LiFe3 tetrahedra, corners with two equivalent O(5)LiFe2Sn tetrahedra,  an edgeedge with one O(11)LiFe2Sn tetrahedra, and  an edgeedge with one O(15)LiFe3 tetrahedra. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Li(4), one Fe(4), one Fe(5), and one Sn(3) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(2), one Fe(3), and one Sn(1) atom. In the fifteenth O site, O(15) is bonded to one Li(1), one Fe(3), one Fe(4), and one Fe(5) atom to form a mixture of distorted edge and corner-sharing OLiFe3 tetrahedra. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(2), one Fe(3), and one Sn(2) atom.
Li4Fe5Sn3O16 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(11), one O(12), one O(15), and one O(3) atom to form LiO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Sn(1)O6 octahedra,  a cornercorner with one Sn(2)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, and corners with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-65°. The Li(1)-O(11) bond length is 2.04 Å. The Li(1)-O(12) bond length is 1.97 Å. The Li(1)-O(15) bond length is 2.10 Å. The Li(1)-O(3) bond length is 2.02 Å. In the second Li site, Li(2) is bonded to one O(14), one O(16), one O(5), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra,  a cornercorner with one Sn(3)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Sn(1)O6 octahedra, and  an edgeedge with one Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-68°. The Li(2)-O(14) bond length is 1.94 Å. The Li(2)-O(16) bond length is 1.96 Å. The Li(2)-O(5) bond length is 1.79 Å. The Li(2)-O(9) bond length is 2.14 Å. In the third Li site, Li(3) is bonded to one O(1), one O(10), one O(4), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Sn(1)O6 octahedra,  a cornercorner with one Sn(2)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra,  an edgeedge with one Fe(5)O6 octahedra, and  an edgeedge with one Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. The Li(3)-O(1) bond length is 2.03 Å. The Li(3)-O(10) bond length is 1.93 Å. The Li(3)-O(4) bond length is 1.80 Å. The Li(3)-O(6) bond length is 1.99 Å. In the fourth Li site, Li(4) is bonded to one O(13), one O(2), one O(7), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra,  a cornercorner with one Sn(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-63°. The Li(4)-O(13) bond length is 2.01 Å. The Li(4)-O(2) bond length is 2.01 Å. The Li(4)-O(7) bond length is 2.05 Å. The Li(4)-O(8) bond length is 2.02 Å. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(4)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, corners with three equivalent Li(3)O4 tetrahedra, corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Sn(1)O6 octahedra, and  an edgeedge with one Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-56°. The Fe(1)-O(1) bond length is 2.14 Å. The Fe(1)-O(10) bond length is 2.05 Å. The Fe(1)-O(2) bond length is 2.16 Å. The Fe(1)-O(6) bond length is 2.04 Å. The Fe(1)-O(7) bond length is 2.15 Å. The Fe(1)-O(8) bond length is 2.12 Å. In the second Fe site, Fe(2) is bonded to one O(14), one O(16), one O(3), one O(4), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, edges with two equivalent Sn(2)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 49°. The Fe(2)-O(14) bond length is 2.10 Å. The Fe(2)-O(16) bond length is 2.14 Å. The Fe(2)-O(3) bond length is 2.05 Å. The Fe(2)-O(4) bond length is 2.00 Å. The Fe(2)-O(7) bond length is 2.05 Å. The Fe(2)-O(8) bond length is 2.03 Å. In the third Fe site, Fe(3) is bonded to one O(11), one O(12), one O(14), one O(15), one O(16), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Fe(4)O6 octahedra,  an edgeedge with one Fe(5)O6 octahedra, and  an edgeedge with one Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-54°. The Fe(3)-O(11) bond length is 2.14 Å. The Fe(3)-O(12) bond length is 2.10 Å. The Fe(3)-O(14) bond length is 2.06 Å. The Fe(3)-O(15) bond length is 2.13 Å. The Fe(3)-O(16) bond length is 2.06 Å. The Fe(3)-O(9) bond length is 2.12 Å. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), and one O(5) atom to form FeO6 octahedra that share corners with two equivalent Fe(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 Fe(3)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, edges with two equivalent Sn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. The Fe(4)-O(1) bond length is 2.01 Å. The Fe(4)-O(10) bond length is 2.00 Å. The Fe(4)-O(11) bond length is 1.98 Å. The Fe(4)-O(13) bond length is 1.96 Å. The Fe(4)-O(15) bond length is 1.94 Å. The Fe(4)-O(5) bond length is 1.94 Å. In the fifth Fe site, Fe(5) is bonded to one O(10), one O(12), one O(13), one O(15), one O(5), and one O(6) atom to form FeO6 octahedra that share corners with two equivalent Fe(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 Fe(3)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, edges with two equivalent Sn(3)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-53°. The Fe(5)-O(10) bond length is 2.18 Å. The Fe(5)-O(12) bond length is 2.03 Å. The Fe(5)-O(13) bond length is 2.04 Å. The Fe(5)-O(15) bond length is 2.08 Å. The Fe(5)-O(5) bond length is 2.02 Å. The Fe(5)-O(6) bond length is 2.06 Å. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(14), one O(2), one O(3), one O(4), one O(7), and one O(9) atom to form SnO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Sn(2)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 53°. The Sn(1)-O(14) bond length is 2.11 Å. The Sn(1)-O(2) bond length is 2.09 Å. The Sn(1)-O(3) bond length is 2.09 Å. The Sn(1)-O(4) bond length is 2.06 Å. The Sn(1)-O(7) bond length is 2.10 Å. The Sn(1)-O(9) bond length is 2.12 Å. In the second Sn site, Sn(2) is bonded to one O(16), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form SnO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Sn(1)O6 octahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 53-54°. The Sn(2)-O(16) bond length is 2.09 Å. The Sn(2)-O(2) bond length is 2.09 Å. The Sn(2)-O(3) bond length is 2.09 Å. The Sn(2)-O(4) bond length is 2.06 Å. The Sn(2)-O(8) bond length is 2.10 Å. The Sn(2)-O(9) bond length is 2.11 Å. In the third Sn site, Sn(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(5), and one O(6) atom to form SnO6 octahedra that share corners with two equivalent Fe(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 Fe(3)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-56°. The Sn(3)-O(1) bond length is 2.13 Å. The Sn(3)-O(11) bond length is 2.12 Å. The Sn(3)-O(12) bond length is 2.09 Å. The Sn(3)-O(13) bond length is 2.08 Å. The Sn(3)-O(5) bond length is 2.08 Å. The Sn(3)-O(6) bond length is 2.11 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Fe(1), one Fe(4), and one Sn(3) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Fe(1), one Sn(1), and one Sn(2) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(1), one Fe(2), one Sn(1), and one Sn(2) atom. In the fourth O site, O(4) is bonded to one Li(3), one Fe(2), one Sn(1), and one Sn(2) atom to form distorted corner-sharing OLiFeSn2 tetrahedra. In the fifth O site, O(5) is bonded to one Li(2), one Fe(4), one Fe(5), and one Sn(3) atom to form distorted OLiFe2Sn tetrahedra that share corners with two equivalent O(11)LiFe2Sn tetrahedra, corners with two equivalent O(12)LiFe2Sn tetrahedra, and corners with two equivalent O(15)LiFe3 tetrahedra. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(3), one Fe(1), one Fe(5), and one Sn(3) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Fe(1), one Fe(2), and one Sn(1) atom. In the eighth O site, O(8) is bonded to one Li(4), one Fe(1), one Fe(2), and one Sn(2) atom to form distorted corner-sharing OLiFe2Sn tetrahedra. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(3), one Sn(1), and one Sn(2) atom. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Fe(1), one Fe(4), and one Fe(5) atom. In the eleventh O site, O(11) is bonded to one Li(1), one Fe(3), one Fe(4), and one Sn(3) atom to form distorted OLiFe2Sn tetrahedra that share  a cornercorner with one O(12)LiFe2Sn tetrahedra,  a cornercorner with one O(15)LiFe3 tetrahedra, corners with two equivalent O(5)LiFe2Sn tetrahedra,  an edgeedge with one O(12)LiFe2Sn tetrahedra, and  an edgeedge with one O(15)LiFe3 tetrahedra. In the twelfth O site, O(12) is bonded to one Li(1), one Fe(3), one Fe(5), and one Sn(3) atom to form distorted OLiFe2Sn tetrahedra that share  a cornercorner with one O(11)LiFe2Sn tetrahedra,  a cornercorner with one O(15)LiFe3 tetrahedra, corners with two equivalent O(5)LiFe2Sn tetrahedra,  an edgeedge with one O(11)LiFe2Sn tetrahedra, and  an edgeedge with one O(15)LiFe3 tetrahedra. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Li(4), one Fe(4), one Fe(5), and one Sn(3) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(2), one Fe(3), and one Sn(1) atom. In the fifteenth O site, O(15) is bonded to one Li(1), one Fe(3), one Fe(4), and one Fe(5) atom to form a mixture of distorted edge and corner-sharing OLiFe3 tetrahedra. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(2), one Fe(2), one Fe(3), and one Sn(2) atom.