Sm4TiFe33 crystallizes in the monoclinic Cm space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 19-coordinate geometry to one Ti(1), one Fe(1), one Fe(5), one Fe(6), one Fe(9), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(15), two equivalent Fe(17), two equivalent Fe(3), and four equivalent Fe(7) atoms. In the second Sm site, Sm(2) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(19), one Fe(2), one Fe(5), one Fe(6), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(16), two equivalent Fe(18), two equivalent Fe(4), and four equivalent Fe(8) atoms. In the third Sm site, Sm(3) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(2), one Fe(20), one Fe(5), one Fe(9), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), two equivalent Fe(17), two equivalent Fe(7), and four equivalent Fe(3) atoms. In the fourth Sm site, Sm(4) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(10), one Fe(2), one Fe(21), one Fe(6), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), two equivalent Fe(18), two equivalent Fe(8), and four equivalent Fe(4) atoms. Ti(1) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(21), one Fe(6), one Fe(9), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), two equivalent Fe(17), and two equivalent Fe(7) atoms. There are twenty-one inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Sm(1), one Sm(3), one Sm(4), one Fe(21), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(17), and two equivalent Fe(7) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(6)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2TiFe9 cuboctahedra, corners with four equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. In the second Fe site, Fe(2) is bonded to one Sm(2), one Sm(3), one Sm(4), one Fe(20), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(18), and two equivalent Fe(8) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(10)Sm2Fe10 cuboctahedra, corners with four equivalent Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(11)Sm2Fe10 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. In the third Fe site, Fe(3) is bonded to one Sm(1), two equivalent Sm(3), one Fe(11), one Fe(13), one Fe(17), one Fe(20), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(15) atoms to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(6)Sm3TiFe8 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. In the fourth Fe site, Fe(4) is bonded to one Sm(2), two equivalent Sm(4), one Fe(10), one Fe(12), one Fe(14), one Fe(18), one Fe(21), one Fe(6), one Fe(8), and two equivalent Fe(16) atoms to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(6)Sm3TiFe8 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. In the fifth Fe site, Fe(5) is bonded to one Sm(1), one Sm(2), one Sm(3), one Fe(19), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), and two equivalent Fe(3) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(6)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2TiFe9 cuboctahedra, corners with four equivalent Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(11)Sm2Fe10 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. In the sixth Fe site, Fe(6) is bonded to one Sm(1), one Sm(2), one Sm(4), one Ti(1), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), and two equivalent Fe(4) atoms to form distorted FeSm3TiFe8 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(10)Sm2Fe10 cuboctahedra, corners with four equivalent Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. In the seventh Fe site, Fe(7) is bonded to one Sm(3), two equivalent Sm(1), one Ti(1), one Fe(1), one Fe(12), one Fe(14), one Fe(15), one Fe(3), one Fe(9), and two equivalent Fe(17) atoms to form FeSm3TiFe8 cuboctahedra that share  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. In the eighth Fe site, Fe(8) is bonded to one Sm(4), two equivalent Sm(2), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(19), one Fe(2), one Fe(4), and two equivalent Fe(18) atoms to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. In the ninth Fe site, Fe(9) is bonded to one Sm(1), one Sm(3), one Ti(1), one Fe(20), two equivalent Fe(15), two equivalent Fe(17), two equivalent Fe(3), and two equivalent Fe(7) atoms to form distorted FeSm2TiFe9 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. In the tenth Fe site, Fe(10) is bonded to one Sm(2), one Sm(4), one Fe(19), one Fe(21), two equivalent Fe(16), two equivalent Fe(18), two equivalent Fe(4), and two equivalent Fe(8) atoms to form FeSm2Fe10 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(6)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. In the eleventh Fe site, Fe(11) is bonded to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(19), one Fe(2), one Fe(20), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(13) atoms to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(6)Sm3TiFe8 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. In the twelfth Fe site, Fe(12) is bonded to one Sm(1), one Sm(4), one Ti(1), one Fe(1), one Fe(16), one Fe(17), one Fe(21), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(14) atoms to form distorted FeSm2TiFe9 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(2)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. In the thirteenth Fe site, Fe(13) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(19), one Fe(2), one Fe(20), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(11) atoms. In the fourteenth Fe site, Fe(14) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(4), one Ti(1), one Fe(1), one Fe(16), one Fe(17), one Fe(21), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(12) atoms. In the fifteenth Fe site, Fe(15) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(11), one Fe(13), one Fe(15), one Fe(19), one Fe(20), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(3) atoms. In the sixteenth Fe site, Fe(16) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Ti(1), one Fe(10), one Fe(12), one Fe(14), one Fe(16), one Fe(21), one Fe(6), one Fe(8), and two equivalent Fe(4) atoms. In the seventeenth Fe site, Fe(17) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Ti(1), one Fe(1), one Fe(12), one Fe(14), one Fe(17), one Fe(21), one Fe(3), one Fe(9), and two equivalent Fe(7) atoms. In the eighteenth Fe site, Fe(18) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(10), one Fe(11), one Fe(13), one Fe(18), one Fe(19), one Fe(2), one Fe(20), one Fe(4), and two equivalent Fe(8) atoms. In the nineteenth Fe site, Fe(19) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(10), one Fe(20), one Fe(5), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), two equivalent Fe(18), and two equivalent Fe(8) atoms. In the twentieth Fe site, Fe(20) is bonded in a 14-coordinate geometry to one Sm(3), one Fe(19), one Fe(2), one Fe(9), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), two equivalent Fe(18), and two equivalent Fe(3) atoms. In the twenty-first Fe site, Fe(21) is bonded in a 1-coordinate geometry to one Sm(4), one Ti(1), one Fe(1), one Fe(10), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), two equivalent Fe(17), and two equivalent Fe(4) atoms.
Sm4TiFe33 crystallizes in the monoclinic Cm space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 19-coordinate geometry to one Ti(1), one Fe(1), one Fe(5), one Fe(6), one Fe(9), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(15), two equivalent Fe(17), two equivalent Fe(3), and four equivalent Fe(7) atoms. The Sm(1)-Ti(1) bond length is 3.17 Å. The Sm(1)-Fe(1) bond length is 3.06 Å. The Sm(1)-Fe(5) bond length is 3.19 Å. The Sm(1)-Fe(6) bond length is 3.27 Å. The Sm(1)-Fe(9) bond length is 3.33 Å. Both Sm(1)-Fe(12) bond lengths are 3.35 Å. Both Sm(1)-Fe(14) bond lengths are 3.02 Å. Both Sm(1)-Fe(15) bond lengths are 3.02 Å. Both Sm(1)-Fe(17) bond lengths are 3.02 Å. Both Sm(1)-Fe(3) bond lengths are 3.06 Å. There are two shorter (3.19 Å) and two longer (3.26 Å) Sm(1)-Fe(7) bond lengths. In the second Sm site, Sm(2) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(19), one Fe(2), one Fe(5), one Fe(6), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(16), two equivalent Fe(18), two equivalent Fe(4), and four equivalent Fe(8) atoms. The Sm(2)-Fe(10) bond length is 3.27 Å. The Sm(2)-Fe(19) bond length is 3.05 Å. The Sm(2)-Fe(2) bond length is 3.08 Å. The Sm(2)-Fe(5) bond length is 3.18 Å. The Sm(2)-Fe(6) bond length is 3.22 Å. Both Sm(2)-Fe(11) bond lengths are 3.29 Å. Both Sm(2)-Fe(13) bond lengths are 3.04 Å. Both Sm(2)-Fe(16) bond lengths are 3.02 Å. Both Sm(2)-Fe(18) bond lengths are 3.04 Å. Both Sm(2)-Fe(4) bond lengths are 3.10 Å. There are two shorter (3.20 Å) and two longer (3.24 Å) Sm(2)-Fe(8) bond lengths. In the third Sm site, Sm(3) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(2), one Fe(20), one Fe(5), one Fe(9), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), two equivalent Fe(17), two equivalent Fe(7), and four equivalent Fe(3) atoms. The Sm(3)-Fe(1) bond length is 3.24 Å. The Sm(3)-Fe(2) bond length is 3.18 Å. The Sm(3)-Fe(20) bond length is 3.06 Å. The Sm(3)-Fe(5) bond length is 3.08 Å. The Sm(3)-Fe(9) bond length is 3.27 Å. Both Sm(3)-Fe(11) bond lengths are 3.28 Å. Both Sm(3)-Fe(13) bond lengths are 3.03 Å. Both Sm(3)-Fe(15) bond lengths are 3.04 Å. Both Sm(3)-Fe(17) bond lengths are 3.01 Å. Both Sm(3)-Fe(7) bond lengths are 3.09 Å. There are two shorter (3.21 Å) and two longer (3.24 Å) Sm(3)-Fe(3) bond lengths. In the fourth Sm site, Sm(4) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(10), one Fe(2), one Fe(21), one Fe(6), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), two equivalent Fe(18), two equivalent Fe(8), and four equivalent Fe(4) atoms. The Sm(4)-Fe(1) bond length is 3.21 Å. The Sm(4)-Fe(10) bond length is 3.28 Å. The Sm(4)-Fe(2) bond length is 3.23 Å. The Sm(4)-Fe(21) bond length is 3.02 Å. The Sm(4)-Fe(6) bond length is 3.09 Å. Both Sm(4)-Fe(12) bond lengths are 3.29 Å. Both Sm(4)-Fe(14) bond lengths are 3.02 Å. Both Sm(4)-Fe(16) bond lengths are 3.02 Å. Both Sm(4)-Fe(18) bond lengths are 3.01 Å. Both Sm(4)-Fe(8) bond lengths are 3.09 Å. There are two shorter (3.20 Å) and two longer (3.24 Å) Sm(4)-Fe(4) bond lengths. Ti(1) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(21), one Fe(6), one Fe(9), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), two equivalent Fe(17), and two equivalent Fe(7) atoms. The Ti(1)-Fe(21) bond length is 2.38 Å. The Ti(1)-Fe(6) bond length is 2.67 Å. The Ti(1)-Fe(9) bond length is 2.64 Å. Both Ti(1)-Fe(12) bond lengths are 2.65 Å. Both Ti(1)-Fe(14) bond lengths are 2.79 Å. Both Ti(1)-Fe(16) bond lengths are 2.78 Å. Both Ti(1)-Fe(17) bond lengths are 2.78 Å. Both Ti(1)-Fe(7) bond lengths are 2.68 Å. There are twenty-one inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Sm(1), one Sm(3), one Sm(4), one Fe(21), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(17), and two equivalent Fe(7) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(6)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2TiFe9 cuboctahedra, corners with four equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. The Fe(1)-Fe(21) bond length is 2.62 Å. Both Fe(1)-Fe(12) bond lengths are 2.45 Å. Both Fe(1)-Fe(14) bond lengths are 2.63 Å. Both Fe(1)-Fe(17) bond lengths are 2.54 Å. Both Fe(1)-Fe(7) bond lengths are 2.48 Å. In the second Fe site, Fe(2) is bonded to one Sm(2), one Sm(3), one Sm(4), one Fe(20), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(18), and two equivalent Fe(8) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(10)Sm2Fe10 cuboctahedra, corners with four equivalent Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(11)Sm2Fe10 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. The Fe(2)-Fe(20) bond length is 2.64 Å. Both Fe(2)-Fe(11) bond lengths are 2.46 Å. Both Fe(2)-Fe(13) bond lengths are 2.65 Å. Both Fe(2)-Fe(18) bond lengths are 2.55 Å. Both Fe(2)-Fe(8) bond lengths are 2.49 Å. In the third Fe site, Fe(3) is bonded to one Sm(1), two equivalent Sm(3), one Fe(11), one Fe(13), one Fe(17), one Fe(20), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(15) atoms to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(6)Sm3TiFe8 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. The Fe(3)-Fe(11) bond length is 2.45 Å. The Fe(3)-Fe(13) bond length is 2.53 Å. The Fe(3)-Fe(17) bond length is 2.62 Å. The Fe(3)-Fe(20) bond length is 2.65 Å. The Fe(3)-Fe(5) bond length is 2.49 Å. The Fe(3)-Fe(7) bond length is 2.47 Å. The Fe(3)-Fe(9) bond length is 2.45 Å. There is one shorter (2.53 Å) and one longer (2.64 Å) Fe(3)-Fe(15) bond length. In the fourth Fe site, Fe(4) is bonded to one Sm(2), two equivalent Sm(4), one Fe(10), one Fe(12), one Fe(14), one Fe(18), one Fe(21), one Fe(6), one Fe(8), and two equivalent Fe(16) atoms to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(6)Sm3TiFe8 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. The Fe(4)-Fe(10) bond length is 2.46 Å. The Fe(4)-Fe(12) bond length is 2.45 Å. The Fe(4)-Fe(14) bond length is 2.54 Å. The Fe(4)-Fe(18) bond length is 2.63 Å. The Fe(4)-Fe(21) bond length is 2.63 Å. The Fe(4)-Fe(6) bond length is 2.48 Å. The Fe(4)-Fe(8) bond length is 2.47 Å. There is one shorter (2.53 Å) and one longer (2.62 Å) Fe(4)-Fe(16) bond length. In the fifth Fe site, Fe(5) is bonded to one Sm(1), one Sm(2), one Sm(3), one Fe(19), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), and two equivalent Fe(3) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(6)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2TiFe9 cuboctahedra, corners with four equivalent Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(11)Sm2Fe10 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. The Fe(5)-Fe(19) bond length is 2.64 Å. Both Fe(5)-Fe(11) bond lengths are 2.46 Å. Both Fe(5)-Fe(13) bond lengths are 2.65 Å. Both Fe(5)-Fe(15) bond lengths are 2.55 Å. In the sixth Fe site, Fe(6) is bonded to one Sm(1), one Sm(2), one Sm(4), one Ti(1), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), and two equivalent Fe(4) atoms to form distorted FeSm3TiFe8 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(10)Sm2Fe10 cuboctahedra, corners with four equivalent Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. Both Fe(6)-Fe(12) bond lengths are 2.48 Å. Both Fe(6)-Fe(14) bond lengths are 2.62 Å. Both Fe(6)-Fe(16) bond lengths are 2.55 Å. In the seventh Fe site, Fe(7) is bonded to one Sm(3), two equivalent Sm(1), one Ti(1), one Fe(1), one Fe(12), one Fe(14), one Fe(15), one Fe(3), one Fe(9), and two equivalent Fe(17) atoms to form FeSm3TiFe8 cuboctahedra that share  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(9)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. The Fe(7)-Fe(12) bond length is 2.47 Å. The Fe(7)-Fe(14) bond length is 2.55 Å. The Fe(7)-Fe(15) bond length is 2.63 Å. The Fe(7)-Fe(9) bond length is 2.48 Å. There is one shorter (2.54 Å) and one longer (2.61 Å) Fe(7)-Fe(17) bond length. In the eighth Fe site, Fe(8) is bonded to one Sm(4), two equivalent Sm(2), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(19), one Fe(2), one Fe(4), and two equivalent Fe(18) atoms to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(10)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(12)Sm2TiFe9 cuboctahedra,  an edgeedge with one Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. The Fe(8)-Fe(10) bond length is 2.46 Å. The Fe(8)-Fe(11) bond length is 2.45 Å. The Fe(8)-Fe(13) bond length is 2.53 Å. The Fe(8)-Fe(16) bond length is 2.61 Å. The Fe(8)-Fe(19) bond length is 2.64 Å. There is one shorter (2.53 Å) and one longer (2.64 Å) Fe(8)-Fe(18) bond length. In the ninth Fe site, Fe(9) is bonded to one Sm(1), one Sm(3), one Ti(1), one Fe(20), two equivalent Fe(15), two equivalent Fe(17), two equivalent Fe(3), and two equivalent Fe(7) atoms to form distorted FeSm2TiFe9 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra, corners with three equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra, edges with two equivalent Fe(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. The Fe(9)-Fe(20) bond length is 2.59 Å. Both Fe(9)-Fe(15) bond lengths are 2.43 Å. Both Fe(9)-Fe(17) bond lengths are 2.46 Å. In the tenth Fe site, Fe(10) is bonded to one Sm(2), one Sm(4), one Fe(19), one Fe(21), two equivalent Fe(16), two equivalent Fe(18), two equivalent Fe(4), and two equivalent Fe(8) atoms to form FeSm2Fe10 cuboctahedra that share corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(2)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(6)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(4)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. The Fe(10)-Fe(19) bond length is 2.60 Å. The Fe(10)-Fe(21) bond length is 2.59 Å. Both Fe(10)-Fe(16) bond lengths are 2.44 Å. Both Fe(10)-Fe(18) bond lengths are 2.44 Å. In the eleventh Fe site, Fe(11) is bonded to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(19), one Fe(2), one Fe(20), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(13) atoms to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(6)Sm3TiFe8 cuboctahedra, corners with two equivalent Fe(11)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(11)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. The Fe(11)-Fe(15) bond length is 2.44 Å. The Fe(11)-Fe(18) bond length is 2.45 Å. The Fe(11)-Fe(19) bond length is 2.62 Å. The Fe(11)-Fe(20) bond length is 2.62 Å. There is one shorter (2.43 Å) and one longer (2.44 Å) Fe(11)-Fe(13) bond length. In the twelfth Fe site, Fe(12) is bonded to one Sm(1), one Sm(4), one Ti(1), one Fe(1), one Fe(16), one Fe(17), one Fe(21), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(14) atoms to form distorted FeSm2TiFe9 cuboctahedra that share  a cornercorner with one Fe(10)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(9)Sm2TiFe9 cuboctahedra,  a cornercorner with one Fe(2)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(5)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, corners with two equivalent Fe(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(4)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(4)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(6)Sm3TiFe8 cuboctahedra,  an edgeedge with one Fe(7)Sm3TiFe8 cuboctahedra,  a faceface with one Fe(10)Sm2Fe10 cuboctahedra,  a faceface with one Fe(9)Sm2TiFe9 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(6)Sm3TiFe8 cuboctahedra, faces with two equivalent Fe(12)Sm2TiFe9 cuboctahedra, faces with two equivalent Fe(4)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3TiFe8 cuboctahedra. The Fe(12)-Fe(16) bond length is 2.45 Å. The Fe(12)-Fe(17) bond length is 2.44 Å. The Fe(12)-Fe(21) bond length is 2.60 Å. There is one shorter (2.43 Å) and one longer (2.45 Å) Fe(12)-Fe(14) bond length. In the thirteenth Fe site, Fe(13) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(19), one Fe(2), one Fe(20), one Fe(3), one Fe(5), one Fe(8), and two equivalent Fe(11) atoms. The Fe(13)-Fe(15) bond length is 2.48 Å. The Fe(13)-Fe(18) bond length is 2.48 Å. The Fe(13)-Fe(19) bond length is 2.76 Å. The Fe(13)-Fe(20) bond length is 2.75 Å. In the fourteenth Fe site, Fe(14) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(4), one Ti(1), one Fe(1), one Fe(16), one Fe(17), one Fe(21), one Fe(4), one Fe(6), one Fe(7), and two equivalent Fe(12) atoms. The Fe(14)-Fe(16) bond length is 2.52 Å. The Fe(14)-Fe(17) bond length is 2.53 Å. The Fe(14)-Fe(21) bond length is 2.82 Å. In the fifteenth Fe site, Fe(15) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(11), one Fe(13), one Fe(15), one Fe(19), one Fe(20), one Fe(5), one Fe(7), one Fe(9), and two equivalent Fe(3) atoms. The Fe(15)-Fe(15) bond length is 2.51 Å. The Fe(15)-Fe(19) bond length is 2.77 Å. The Fe(15)-Fe(20) bond length is 2.77 Å. In the sixteenth Fe site, Fe(16) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Ti(1), one Fe(10), one Fe(12), one Fe(14), one Fe(16), one Fe(21), one Fe(6), one Fe(8), and two equivalent Fe(4) atoms. The Fe(16)-Fe(16) bond length is 2.55 Å. The Fe(16)-Fe(21) bond length is 2.79 Å. In the seventeenth Fe site, Fe(17) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Ti(1), one Fe(1), one Fe(12), one Fe(14), one Fe(17), one Fe(21), one Fe(3), one Fe(9), and two equivalent Fe(7) atoms. The Fe(17)-Fe(17) bond length is 2.54 Å. The Fe(17)-Fe(21) bond length is 2.82 Å. In the eighteenth Fe site, Fe(18) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(10), one Fe(11), one Fe(13), one Fe(18), one Fe(19), one Fe(2), one Fe(20), one Fe(4), and two equivalent Fe(8) atoms. The Fe(18)-Fe(18) bond length is 2.51 Å. The Fe(18)-Fe(19) bond length is 2.76 Å. The Fe(18)-Fe(20) bond length is 2.76 Å. In the nineteenth Fe site, Fe(19) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(10), one Fe(20), one Fe(5), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), two equivalent Fe(18), and two equivalent Fe(8) atoms. The Fe(19)-Fe(20) bond length is 2.38 Å. In the twentieth Fe site, Fe(20) is bonded in a 14-coordinate geometry to one Sm(3), one Fe(19), one Fe(2), one Fe(9), two equivalent Fe(11), two equivalent Fe(13), two equivalent Fe(15), two equivalent Fe(18), and two equivalent Fe(3) atoms. In the twenty-first Fe site, Fe(21) is bonded in a 1-coordinate geometry to one Sm(4), one Ti(1), one Fe(1), one Fe(10), two equivalent Fe(12), two equivalent Fe(14), two equivalent Fe(16), two equivalent Fe(17), and two equivalent Fe(4) atoms.