LiCa3Fe5Sn3O16 crystallizes in the monoclinic Pm space group. Li(1) is bonded in a 7-coordinate geometry to one O(16), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(9), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(16), one O(8), two equivalent O(11), two equivalent O(12), and two equivalent O(15) atoms. In the third Ca site, Ca(3) is bonded in a 8-coordinate geometry to one O(1), one O(9), two equivalent O(10), two equivalent O(13), and two equivalent O(14) atoms. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(11), one O(4), two equivalent O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-59°. In the second Fe site, Fe(2) is bonded to one O(7), one O(9), two equivalent O(10), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-63°. In the third Fe site, Fe(3) is bonded to one O(13), one O(6), two equivalent O(11), and two equivalent O(9) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 51-61°. In the fourth Fe site, Fe(4) is bonded to one O(12), one O(3), two equivalent O(14), and two equivalent O(16) atoms to form FeO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. In the fifth Fe site, Fe(5) is bonded to one O(1), one O(15), two equivalent O(13), and two equivalent O(2) atoms to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-61°. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(16), one O(2), two equivalent O(15), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-59°. In the second Sn site, Sn(2) is bonded to one O(14), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-63°. In the third Sn site, Sn(3) is bonded to one O(10), one O(8), two equivalent O(12), and two equivalent O(7) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(3), one Fe(5), and two equivalent Sn(2) atoms. In the second O site, O(2) is bonded to two equivalent Ca(1), two equivalent Fe(5), and one Sn(1) atom to form distorted OCa2Fe2Sn trigonal bipyramids that share corners with two equivalent O(6)Ca2Fe3 square pyramids,  a cornercorner with one O(16)LiCaFe2Sn trigonal bipyramid, corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids,  an edgeedge with one O(6)Ca2Fe3 square pyramid, edges with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, and edges with two equivalent O(15)Ca2FeSn2 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Li(1), one Fe(4), and two equivalent Sn(2) atoms to form OLi2FeSn2 square pyramids that share corners with two equivalent O(7)Li2FeSn2 trigonal bipyramids, edges with two equivalent O(14)Ca2Fe2Sn square pyramids, edges with two equivalent O(3)Li2FeSn2 square pyramids,  an edgeedge with one O(7)Li2FeSn2 trigonal bipyramid, and edges with two equivalent O(16)LiCaFe2Sn trigonal bipyramids. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Li(1), one Fe(1), and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to two equivalent Ca(1), two equivalent Fe(2), and one Sn(2) atom. In the sixth O site, O(6) is bonded to two equivalent Ca(1), one Fe(3), and two equivalent Fe(1) atoms to form OCa2Fe3 square pyramids that share corners with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids, edges with two equivalent O(11)Ca2Fe3 square pyramids, edges with two equivalent O(6)Ca2Fe3 square pyramids,  an edgeedge with one O(2)Ca2Fe2Sn trigonal bipyramid, edges with two equivalent O(9)Ca2Fe3 trigonal bipyramids, and  an edgeedge with one O(8)CaFe2Sn trigonal pyramid. In the seventh O site, O(7) is bonded to two equivalent Li(1), one Fe(2), and two equivalent Sn(3) atoms to form distorted OLi2FeSn2 trigonal bipyramids that share corners with two equivalent O(3)Li2FeSn2 square pyramids,  a cornercorner with one O(9)Ca2Fe3 trigonal bipyramid, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids,  an edgeedge with one O(3)Li2FeSn2 square pyramid, edges with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids, and edges with two equivalent O(7)Li2FeSn2 trigonal bipyramids. In the eighth O site, O(8) is bonded to one Ca(2), two equivalent Fe(1), and one Sn(3) atom to form OCaFe2Sn trigonal pyramids that share corners with two equivalent O(6)Ca2Fe3 square pyramids,  a cornercorner with one O(10)Ca2Fe2Sn trigonal bipyramid,  a cornercorner with one O(16)LiCaFe2Sn trigonal bipyramid, corners with two equivalent O(15)Ca2FeSn2 trigonal bipyramids, corners with two equivalent O(7)Li2FeSn2 trigonal bipyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids,  an edgeedge with one O(6)Ca2Fe3 square pyramid, and edges with two equivalent O(11)Ca2Fe3 square pyramids. In the ninth O site, O(9) is bonded to one Ca(1), one Ca(3), one Fe(2), and two equivalent Fe(3) atoms to form distorted OCa2Fe3 trigonal bipyramids that share corners with two equivalent O(14)Ca2Fe2Sn square pyramids, corners with two equivalent O(11)Ca2Fe3 square pyramids,  a cornercorner with one O(7)Li2FeSn2 trigonal bipyramid, corners with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids,  an edgeedge with one O(11)Ca2Fe3 square pyramid, edges with two equivalent O(6)Ca2Fe3 square pyramids, and edges with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids. In the tenth O site, O(10) is bonded to two equivalent Ca(3), two equivalent Fe(2), and one Sn(3) atom to form distorted OCa2Fe2Sn trigonal bipyramids that share corners with two equivalent O(14)Ca2Fe2Sn square pyramids,  a cornercorner with one O(8)CaFe2Sn trigonal pyramid,  an edgeedge with one O(14)Ca2Fe2Sn square pyramid, edges with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids, edges with two equivalent O(9)Ca2Fe3 trigonal bipyramids, and edges with two equivalent O(7)Li2FeSn2 trigonal bipyramids. In the eleventh O site, O(11) is bonded to two equivalent Ca(2), one Fe(1), and two equivalent Fe(3) atoms to form OCa2Fe3 square pyramids that share corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids, corners with two equivalent O(15)Ca2FeSn2 trigonal bipyramids, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids, edges with two equivalent O(11)Ca2Fe3 square pyramids, edges with two equivalent O(6)Ca2Fe3 square pyramids,  an edgeedge with one O(9)Ca2Fe3 trigonal bipyramid,  an edgeedge with one O(15)Ca2FeSn2 trigonal bipyramid, and edges with two equivalent O(8)CaFe2Sn trigonal pyramids. In the twelfth O site, O(12) is bonded in a 5-coordinate geometry to two equivalent Ca(2), one Fe(4), and two equivalent Sn(3) atoms. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to two equivalent Ca(3), one Fe(3), and two equivalent Fe(5) atoms. In the fourteenth O site, O(14) is bonded to two equivalent Ca(3), two equivalent Fe(4), and one Sn(2) atom to form distorted OCa2Fe2Sn square pyramids that share corners with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids, corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids, edges with two equivalent O(14)Ca2Fe2Sn square pyramids, edges with two equivalent O(3)Li2FeSn2 square pyramids,  an edgeedge with one O(10)Ca2Fe2Sn trigonal bipyramid, and  an edgeedge with one O(16)LiCaFe2Sn trigonal bipyramid. In the fifteenth O site, O(15) is bonded to two equivalent Ca(2), one Fe(5), and two equivalent Sn(1) atoms to form distorted OCa2FeSn2 trigonal bipyramids that share corners with two equivalent O(11)Ca2Fe3 square pyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids,  an edgeedge with one O(11)Ca2Fe3 square pyramid, edges with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, edges with two equivalent O(15)Ca2FeSn2 trigonal bipyramids, and edges with two equivalent O(16)LiCaFe2Sn trigonal bipyramids. In the sixteenth O site, O(16) is bonded to one Li(1), one Ca(2), two equivalent Fe(4), and one Sn(1) atom to form distorted OLiCaFe2Sn trigonal bipyramids that share corners with two equivalent O(14)Ca2Fe2Sn square pyramids, corners with two equivalent O(11)Ca2Fe3 square pyramids,  a cornercorner with one O(2)Ca2Fe2Sn trigonal bipyramid, corners with two equivalent O(7)Li2FeSn2 trigonal bipyramids, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids,  a cornercorner with one O(8)CaFe2Sn trigonal pyramid,  an edgeedge with one O(14)Ca2Fe2Sn square pyramid, edges with two equivalent O(3)Li2FeSn2 square pyramids, and edges with two equivalent O(15)Ca2FeSn2 trigonal bipyramids.
LiCa3Fe5Sn3O16 crystallizes in the monoclinic Pm space group. Li(1) is bonded in a 7-coordinate geometry to one O(16), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. The Li(1)-O(16) bond length is 2.55 Å. Both Li(1)-O(3) bond lengths are 2.25 Å. Both Li(1)-O(4) bond lengths are 2.68 Å. Both Li(1)-O(7) bond lengths are 2.45 Å. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(9), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. The Ca(1)-O(1) bond length is 2.75 Å. The Ca(1)-O(9) bond length is 2.55 Å. Both Ca(1)-O(2) bond lengths are 2.40 Å. Both Ca(1)-O(5) bond lengths are 2.48 Å. Both Ca(1)-O(6) bond lengths are 2.44 Å. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(16), one O(8), two equivalent O(11), two equivalent O(12), and two equivalent O(15) atoms. The Ca(2)-O(16) bond length is 2.69 Å. The Ca(2)-O(8) bond length is 2.47 Å. Both Ca(2)-O(11) bond lengths are 2.34 Å. Both Ca(2)-O(12) bond lengths are 2.61 Å. Both Ca(2)-O(15) bond lengths are 2.42 Å. In the third Ca site, Ca(3) is bonded in a 8-coordinate geometry to one O(1), one O(9), two equivalent O(10), two equivalent O(13), and two equivalent O(14) atoms. The Ca(3)-O(1) bond length is 2.64 Å. The Ca(3)-O(9) bond length is 2.57 Å. Both Ca(3)-O(10) bond lengths are 2.37 Å. Both Ca(3)-O(13) bond lengths are 2.43 Å. Both Ca(3)-O(14) bond lengths are 2.58 Å. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(11), one O(4), two equivalent O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-59°. The Fe(1)-O(11) bond length is 2.03 Å. The Fe(1)-O(4) bond length is 2.15 Å. Both Fe(1)-O(6) bond lengths are 2.08 Å. Both Fe(1)-O(8) bond lengths are 2.06 Å. In the second Fe site, Fe(2) is bonded to one O(7), one O(9), two equivalent O(10), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-63°. The Fe(2)-O(7) bond length is 2.16 Å. The Fe(2)-O(9) bond length is 2.09 Å. Both Fe(2)-O(10) bond lengths are 2.24 Å. Both Fe(2)-O(5) bond lengths are 2.20 Å. In the third Fe site, Fe(3) is bonded to one O(13), one O(6), two equivalent O(11), and two equivalent O(9) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 51-61°. The Fe(3)-O(13) bond length is 1.99 Å. The Fe(3)-O(6) bond length is 2.14 Å. Both Fe(3)-O(11) bond lengths are 2.18 Å. Both Fe(3)-O(9) bond lengths are 2.01 Å. In the fourth Fe site, Fe(4) is bonded to one O(12), one O(3), two equivalent O(14), and two equivalent O(16) atoms to form FeO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. The Fe(4)-O(12) bond length is 2.11 Å. The Fe(4)-O(3) bond length is 2.10 Å. Both Fe(4)-O(14) bond lengths are 2.11 Å. Both Fe(4)-O(16) bond lengths are 2.03 Å. In the fifth Fe site, Fe(5) is bonded to one O(1), one O(15), two equivalent O(13), and two equivalent O(2) atoms to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-61°. The Fe(5)-O(1) bond length is 2.12 Å. The Fe(5)-O(15) bond length is 2.17 Å. Both Fe(5)-O(13) bond lengths are 2.17 Å. Both Fe(5)-O(2) bond lengths are 2.26 Å. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(16), one O(2), two equivalent O(15), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-59°. The Sn(1)-O(16) bond length is 2.13 Å. The Sn(1)-O(2) bond length is 2.03 Å. Both Sn(1)-O(15) bond lengths are 2.16 Å. Both Sn(1)-O(4) bond lengths are 2.11 Å. In the second Sn site, Sn(2) is bonded to one O(14), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-63°. The Sn(2)-O(14) bond length is 2.13 Å. The Sn(2)-O(5) bond length is 2.04 Å. Both Sn(2)-O(1) bond lengths are 2.07 Å. Both Sn(2)-O(3) bond lengths are 2.16 Å. In the third Sn site, Sn(3) is bonded to one O(10), one O(8), two equivalent O(12), and two equivalent O(7) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. The Sn(3)-O(10) bond length is 2.02 Å. The Sn(3)-O(8) bond length is 2.08 Å. Both Sn(3)-O(12) bond lengths are 2.21 Å. Both Sn(3)-O(7) bond lengths are 2.10 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Ca(1), one Ca(3), one Fe(5), and two equivalent Sn(2) atoms. In the second O site, O(2) is bonded to two equivalent Ca(1), two equivalent Fe(5), and one Sn(1) atom to form distorted OCa2Fe2Sn trigonal bipyramids that share corners with two equivalent O(6)Ca2Fe3 square pyramids,  a cornercorner with one O(16)LiCaFe2Sn trigonal bipyramid, corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids,  an edgeedge with one O(6)Ca2Fe3 square pyramid, edges with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, and edges with two equivalent O(15)Ca2FeSn2 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Li(1), one Fe(4), and two equivalent Sn(2) atoms to form OLi2FeSn2 square pyramids that share corners with two equivalent O(7)Li2FeSn2 trigonal bipyramids, edges with two equivalent O(14)Ca2Fe2Sn square pyramids, edges with two equivalent O(3)Li2FeSn2 square pyramids,  an edgeedge with one O(7)Li2FeSn2 trigonal bipyramid, and edges with two equivalent O(16)LiCaFe2Sn trigonal bipyramids. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Li(1), one Fe(1), and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to two equivalent Ca(1), two equivalent Fe(2), and one Sn(2) atom. In the sixth O site, O(6) is bonded to two equivalent Ca(1), one Fe(3), and two equivalent Fe(1) atoms to form OCa2Fe3 square pyramids that share corners with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids, edges with two equivalent O(11)Ca2Fe3 square pyramids, edges with two equivalent O(6)Ca2Fe3 square pyramids,  an edgeedge with one O(2)Ca2Fe2Sn trigonal bipyramid, edges with two equivalent O(9)Ca2Fe3 trigonal bipyramids, and  an edgeedge with one O(8)CaFe2Sn trigonal pyramid. In the seventh O site, O(7) is bonded to two equivalent Li(1), one Fe(2), and two equivalent Sn(3) atoms to form distorted OLi2FeSn2 trigonal bipyramids that share corners with two equivalent O(3)Li2FeSn2 square pyramids,  a cornercorner with one O(9)Ca2Fe3 trigonal bipyramid, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids,  an edgeedge with one O(3)Li2FeSn2 square pyramid, edges with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids, and edges with two equivalent O(7)Li2FeSn2 trigonal bipyramids. In the eighth O site, O(8) is bonded to one Ca(2), two equivalent Fe(1), and one Sn(3) atom to form OCaFe2Sn trigonal pyramids that share corners with two equivalent O(6)Ca2Fe3 square pyramids,  a cornercorner with one O(10)Ca2Fe2Sn trigonal bipyramid,  a cornercorner with one O(16)LiCaFe2Sn trigonal bipyramid, corners with two equivalent O(15)Ca2FeSn2 trigonal bipyramids, corners with two equivalent O(7)Li2FeSn2 trigonal bipyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids,  an edgeedge with one O(6)Ca2Fe3 square pyramid, and edges with two equivalent O(11)Ca2Fe3 square pyramids. In the ninth O site, O(9) is bonded to one Ca(1), one Ca(3), one Fe(2), and two equivalent Fe(3) atoms to form distorted OCa2Fe3 trigonal bipyramids that share corners with two equivalent O(14)Ca2Fe2Sn square pyramids, corners with two equivalent O(11)Ca2Fe3 square pyramids,  a cornercorner with one O(7)Li2FeSn2 trigonal bipyramid, corners with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids,  an edgeedge with one O(11)Ca2Fe3 square pyramid, edges with two equivalent O(6)Ca2Fe3 square pyramids, and edges with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids. In the tenth O site, O(10) is bonded to two equivalent Ca(3), two equivalent Fe(2), and one Sn(3) atom to form distorted OCa2Fe2Sn trigonal bipyramids that share corners with two equivalent O(14)Ca2Fe2Sn square pyramids,  a cornercorner with one O(8)CaFe2Sn trigonal pyramid,  an edgeedge with one O(14)Ca2Fe2Sn square pyramid, edges with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids, edges with two equivalent O(9)Ca2Fe3 trigonal bipyramids, and edges with two equivalent O(7)Li2FeSn2 trigonal bipyramids. In the eleventh O site, O(11) is bonded to two equivalent Ca(2), one Fe(1), and two equivalent Fe(3) atoms to form OCa2Fe3 square pyramids that share corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids, corners with two equivalent O(15)Ca2FeSn2 trigonal bipyramids, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids, edges with two equivalent O(11)Ca2Fe3 square pyramids, edges with two equivalent O(6)Ca2Fe3 square pyramids,  an edgeedge with one O(9)Ca2Fe3 trigonal bipyramid,  an edgeedge with one O(15)Ca2FeSn2 trigonal bipyramid, and edges with two equivalent O(8)CaFe2Sn trigonal pyramids. In the twelfth O site, O(12) is bonded in a 5-coordinate geometry to two equivalent Ca(2), one Fe(4), and two equivalent Sn(3) atoms. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to two equivalent Ca(3), one Fe(3), and two equivalent Fe(5) atoms. In the fourteenth O site, O(14) is bonded to two equivalent Ca(3), two equivalent Fe(4), and one Sn(2) atom to form distorted OCa2Fe2Sn square pyramids that share corners with two equivalent O(10)Ca2Fe2Sn trigonal bipyramids, corners with two equivalent O(9)Ca2Fe3 trigonal bipyramids, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids, edges with two equivalent O(14)Ca2Fe2Sn square pyramids, edges with two equivalent O(3)Li2FeSn2 square pyramids,  an edgeedge with one O(10)Ca2Fe2Sn trigonal bipyramid, and  an edgeedge with one O(16)LiCaFe2Sn trigonal bipyramid. In the fifteenth O site, O(15) is bonded to two equivalent Ca(2), one Fe(5), and two equivalent Sn(1) atoms to form distorted OCa2FeSn2 trigonal bipyramids that share corners with two equivalent O(11)Ca2Fe3 square pyramids, corners with two equivalent O(8)CaFe2Sn trigonal pyramids,  an edgeedge with one O(11)Ca2Fe3 square pyramid, edges with two equivalent O(2)Ca2Fe2Sn trigonal bipyramids, edges with two equivalent O(15)Ca2FeSn2 trigonal bipyramids, and edges with two equivalent O(16)LiCaFe2Sn trigonal bipyramids. In the sixteenth O site, O(16) is bonded to one Li(1), one Ca(2), two equivalent Fe(4), and one Sn(1) atom to form distorted OLiCaFe2Sn trigonal bipyramids that share corners with two equivalent O(14)Ca2Fe2Sn square pyramids, corners with two equivalent O(11)Ca2Fe3 square pyramids,  a cornercorner with one O(2)Ca2Fe2Sn trigonal bipyramid, corners with two equivalent O(7)Li2FeSn2 trigonal bipyramids, corners with two equivalent O(16)LiCaFe2Sn trigonal bipyramids,  a cornercorner with one O(8)CaFe2Sn trigonal pyramid,  an edgeedge with one O(14)Ca2Fe2Sn square pyramid, edges with two equivalent O(3)Li2FeSn2 square pyramids, and edges with two equivalent O(15)Ca2FeSn2 trigonal bipyramids.