Tb3SmFe34 crystallizes in the monoclinic Cm space group. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 19-coordinate geometry to one Fe(12), one Fe(16), one Fe(19), one Fe(2), one Fe(20), two equivalent Fe(10), two equivalent Fe(18), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(8), and four equivalent Fe(22) atoms. In the second Tb site, Tb(2) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(13), one Fe(15), one Fe(16), one Fe(19), two equivalent Fe(21), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(7), two equivalent Fe(9), and four equivalent Fe(17) atoms. In the third Tb site, Tb(3) is bonded in a 19-coordinate geometry to one Fe(14), one Fe(15), one Fe(16), one Fe(2), one Fe(20), two equivalent Fe(10), two equivalent Fe(22), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(8), and four equivalent Fe(18) atoms. Sm(1) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(11), one Fe(15), one Fe(19), one Fe(20), two equivalent Fe(17), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(7), two equivalent Fe(9), and four equivalent Fe(21) atoms. There are twenty-two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Tb(2), one Sm(1), one Fe(11), one Fe(13), two equivalent Fe(17), two equivalent Fe(21), two equivalent Fe(7), and two equivalent Fe(9) atoms to form FeTbSmFe10 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with three equivalent Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the second Fe site, Fe(2) is bonded to one Tb(1), one Tb(3), one Fe(12), one Fe(14), two equivalent Fe(10), two equivalent Fe(18), two equivalent Fe(22), and two equivalent Fe(8) atoms to form FeTb2Fe10 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with three equivalent Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the third Fe site, Fe(3) is bonded to one Tb(3), one Sm(1), one Fe(11), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(8), one Fe(9), and two equivalent Fe(6) atoms to form FeTbSmFe10 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(19)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(16)Tb3Fe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the fourth Fe site, Fe(4) is bonded to one Tb(1), one Tb(2), one Fe(10), one Fe(12), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(7), and two equivalent Fe(5) atoms to form FeTb2Fe10 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(20)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, and faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra. In the fifth Fe site, Fe(5) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(2), one Fe(10), one Fe(12), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(7), and two equivalent Fe(4) atoms. In the sixth Fe site, Fe(6) is bonded in a 12-coordinate geometry to one Tb(3), one Sm(1), one Fe(11), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(8), one Fe(9), and two equivalent Fe(3) atoms. In the seventh Fe site, Fe(7) is bonded in a 12-coordinate geometry to one Tb(2), one Sm(1), one Fe(1), one Fe(12), one Fe(13), one Fe(19), one Fe(21), one Fe(4), one Fe(5), one Fe(7), and two equivalent Fe(17) atoms. In the eighth Fe site, Fe(8) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(3), one Fe(11), one Fe(14), one Fe(2), one Fe(20), one Fe(22), one Fe(3), one Fe(6), one Fe(8), and two equivalent Fe(18) atoms. In the ninth Fe site, Fe(9) is bonded in a 12-coordinate geometry to one Tb(2), one Sm(1), one Fe(1), one Fe(11), one Fe(14), one Fe(15), one Fe(17), one Fe(3), one Fe(6), one Fe(9), and two equivalent Fe(21) atoms. In the tenth Fe site, Fe(10) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(3), one Fe(10), one Fe(12), one Fe(13), one Fe(16), one Fe(18), one Fe(2), one Fe(4), one Fe(5), and two equivalent Fe(22) atoms. In the eleventh Fe site, Fe(11) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(1), one Fe(14), one Fe(20), two equivalent Fe(21), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(8), and two equivalent Fe(9) atoms. In the twelfth Fe site, Fe(12) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(13), one Fe(19), one Fe(2), two equivalent Fe(10), two equivalent Fe(22), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(7) atoms. In the thirteenth Fe site, Fe(13) is bonded in a 14-coordinate geometry to one Tb(2), one Fe(1), one Fe(12), one Fe(16), two equivalent Fe(10), two equivalent Fe(17), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(7) atoms. In the fourteenth Fe site, Fe(14) is bonded in a 14-coordinate geometry to one Tb(3), one Fe(11), one Fe(15), one Fe(2), two equivalent Fe(18), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(8), and two equivalent Fe(9) atoms. In the fifteenth Fe site, Fe(15) is bonded to one Tb(2), one Tb(3), one Sm(1), one Fe(14), two equivalent Fe(21), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Fe(9) atoms to form FeTb2SmFe9 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(16)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with three equivalent Fe(1)TbSmFe10 cuboctahedra, corners with four equivalent Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(3)TbSmFe10 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the sixteenth Fe site, Fe(16) is bonded to one Tb(1), one Tb(2), one Tb(3), one Fe(13), two equivalent Fe(10), two equivalent Fe(22), two equivalent Fe(4), and two equivalent Fe(5) atoms to form FeTb3Fe9 cuboctahedra that share corners with two equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(19)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(2)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra, edges with two equivalent Fe(4)Tb2Fe10 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra. In the seventeenth Fe site, Fe(17) is bonded to two equivalent Tb(2), one Sm(1), one Fe(1), one Fe(13), one Fe(19), one Fe(21), one Fe(4), one Fe(5), one Fe(9), and two equivalent Fe(7) atoms to form FeTb2SmFe9 cuboctahedra that share  a cornercorner with one Fe(20)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(19)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, and faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra. In the eighteenth Fe site, Fe(18) is bonded to one Tb(1), two equivalent Tb(3), one Fe(10), one Fe(14), one Fe(2), one Fe(20), one Fe(22), one Fe(3), one Fe(6), and two equivalent Fe(8) atoms to form FeTb3Fe9 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(19)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the nineteenth Fe site, Fe(19) is bonded to one Tb(1), one Tb(2), one Sm(1), one Fe(12), two equivalent Fe(17), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(7) atoms to form FeTb2SmFe9 cuboctahedra that share corners with two equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(16)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(1)TbSmFe10 cuboctahedra, corners with four equivalent Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(4)Tb2Fe10 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra. In the twentieth Fe site, Fe(20) is bonded to one Tb(1), one Tb(3), one Sm(1), one Fe(11), two equivalent Fe(18), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Fe(8) atoms to form FeTb2SmFe9 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(19)Tb2SmFe9 cuboctahedra, corners with three equivalent Fe(2)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, edges with two equivalent Fe(3)TbSmFe10 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the twenty-first Fe site, Fe(21) is bonded to one Tb(2), two equivalent Sm(1), one Fe(1), one Fe(11), one Fe(15), one Fe(17), one Fe(3), one Fe(6), one Fe(7), and two equivalent Fe(9) atoms to form FeTbSm2Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Tb3Fe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the twenty-second Fe site, Fe(22) is bonded to one Tb(3), two equivalent Tb(1), one Fe(12), one Fe(16), one Fe(18), one Fe(2), one Fe(4), one Fe(5), one Fe(8), and two equivalent Fe(10) atoms to form FeTb3Fe9 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(16)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra.
Tb3SmFe34 crystallizes in the monoclinic Cm space group. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 19-coordinate geometry to one Fe(12), one Fe(16), one Fe(19), one Fe(2), one Fe(20), two equivalent Fe(10), two equivalent Fe(18), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(8), and four equivalent Fe(22) atoms. The Tb(1)-Fe(12) bond length is 3.03 Å. The Tb(1)-Fe(16) bond length is 3.07 Å. The Tb(1)-Fe(19) bond length is 3.18 Å. The Tb(1)-Fe(2) bond length is 3.28 Å. The Tb(1)-Fe(20) bond length is 3.23 Å. Both Tb(1)-Fe(10) bond lengths are 3.03 Å. Both Tb(1)-Fe(18) bond lengths are 3.07 Å. Both Tb(1)-Fe(4) bond lengths are 3.28 Å. Both Tb(1)-Fe(5) bond lengths are 3.03 Å. Both Tb(1)-Fe(8) bond lengths are 3.03 Å. There are two shorter (3.18 Å) and two longer (3.24 Å) Tb(1)-Fe(22) bond lengths. In the second Tb site, Tb(2) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(13), one Fe(15), one Fe(16), one Fe(19), two equivalent Fe(21), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(7), two equivalent Fe(9), and four equivalent Fe(17) atoms. The Tb(2)-Fe(1) bond length is 3.27 Å. The Tb(2)-Fe(13) bond length is 3.02 Å. The Tb(2)-Fe(15) bond length is 3.25 Å. The Tb(2)-Fe(16) bond length is 3.18 Å. The Tb(2)-Fe(19) bond length is 3.08 Å. Both Tb(2)-Fe(21) bond lengths are 3.07 Å. Both Tb(2)-Fe(4) bond lengths are 3.28 Å. Both Tb(2)-Fe(5) bond lengths are 3.03 Å. Both Tb(2)-Fe(7) bond lengths are 3.03 Å. Both Tb(2)-Fe(9) bond lengths are 3.03 Å. There are two shorter (3.18 Å) and two longer (3.25 Å) Tb(2)-Fe(17) bond lengths. In the third Tb site, Tb(3) is bonded in a 19-coordinate geometry to one Fe(14), one Fe(15), one Fe(16), one Fe(2), one Fe(20), two equivalent Fe(10), two equivalent Fe(22), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(8), and four equivalent Fe(18) atoms. The Tb(3)-Fe(14) bond length is 3.02 Å. The Tb(3)-Fe(15) bond length is 3.18 Å. The Tb(3)-Fe(16) bond length is 3.24 Å. The Tb(3)-Fe(2) bond length is 3.28 Å. The Tb(3)-Fe(20) bond length is 3.07 Å. Both Tb(3)-Fe(10) bond lengths are 3.03 Å. Both Tb(3)-Fe(22) bond lengths are 3.07 Å. Both Tb(3)-Fe(3) bond lengths are 3.27 Å. Both Tb(3)-Fe(6) bond lengths are 3.03 Å. Both Tb(3)-Fe(8) bond lengths are 3.03 Å. There are two shorter (3.18 Å) and two longer (3.24 Å) Tb(3)-Fe(18) bond lengths. Sm(1) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(11), one Fe(15), one Fe(19), one Fe(20), two equivalent Fe(17), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(7), two equivalent Fe(9), and four equivalent Fe(21) atoms. The Sm(1)-Fe(1) bond length is 3.28 Å. The Sm(1)-Fe(11) bond length is 3.04 Å. The Sm(1)-Fe(15) bond length is 3.07 Å. The Sm(1)-Fe(19) bond length is 3.25 Å. The Sm(1)-Fe(20) bond length is 3.20 Å. Both Sm(1)-Fe(17) bond lengths are 3.07 Å. Both Sm(1)-Fe(3) bond lengths are 3.29 Å. Both Sm(1)-Fe(6) bond lengths are 3.04 Å. Both Sm(1)-Fe(7) bond lengths are 3.04 Å. Both Sm(1)-Fe(9) bond lengths are 3.03 Å. There are two shorter (3.19 Å) and two longer (3.24 Å) Sm(1)-Fe(21) bond lengths. There are twenty-two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Tb(2), one Sm(1), one Fe(11), one Fe(13), two equivalent Fe(17), two equivalent Fe(21), two equivalent Fe(7), and two equivalent Fe(9) atoms to form FeTbSmFe10 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with three equivalent Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. The Fe(1)-Fe(11) bond length is 2.61 Å. The Fe(1)-Fe(13) bond length is 2.60 Å. Both Fe(1)-Fe(17) bond lengths are 2.46 Å. Both Fe(1)-Fe(21) bond lengths are 2.46 Å. Both Fe(1)-Fe(7) bond lengths are 2.44 Å. Both Fe(1)-Fe(9) bond lengths are 2.43 Å. In the second Fe site, Fe(2) is bonded to one Tb(1), one Tb(3), one Fe(12), one Fe(14), two equivalent Fe(10), two equivalent Fe(18), two equivalent Fe(22), and two equivalent Fe(8) atoms to form FeTb2Fe10 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with three equivalent Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. The Fe(2)-Fe(12) bond length is 2.60 Å. The Fe(2)-Fe(14) bond length is 2.60 Å. Both Fe(2)-Fe(10) bond lengths are 2.43 Å. Both Fe(2)-Fe(18) bond lengths are 2.46 Å. Both Fe(2)-Fe(22) bond lengths are 2.46 Å. Both Fe(2)-Fe(8) bond lengths are 2.43 Å. In the third Fe site, Fe(3) is bonded to one Tb(3), one Sm(1), one Fe(11), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(8), one Fe(9), and two equivalent Fe(6) atoms to form FeTbSmFe10 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(19)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(16)Tb3Fe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. The Fe(3)-Fe(11) bond length is 2.61 Å. The Fe(3)-Fe(14) bond length is 2.60 Å. The Fe(3)-Fe(15) bond length is 2.46 Å. The Fe(3)-Fe(18) bond length is 2.46 Å. The Fe(3)-Fe(20) bond length is 2.46 Å. The Fe(3)-Fe(21) bond length is 2.46 Å. The Fe(3)-Fe(8) bond length is 2.43 Å. The Fe(3)-Fe(9) bond length is 2.44 Å. Both Fe(3)-Fe(6) bond lengths are 2.43 Å. In the fourth Fe site, Fe(4) is bonded to one Tb(1), one Tb(2), one Fe(10), one Fe(12), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(7), and two equivalent Fe(5) atoms to form FeTb2Fe10 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(20)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, and faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra. The Fe(4)-Fe(10) bond length is 2.43 Å. The Fe(4)-Fe(12) bond length is 2.60 Å. The Fe(4)-Fe(13) bond length is 2.60 Å. The Fe(4)-Fe(16) bond length is 2.46 Å. The Fe(4)-Fe(17) bond length is 2.46 Å. The Fe(4)-Fe(19) bond length is 2.46 Å. The Fe(4)-Fe(22) bond length is 2.46 Å. The Fe(4)-Fe(7) bond length is 2.43 Å. Both Fe(4)-Fe(5) bond lengths are 2.43 Å. In the fifth Fe site, Fe(5) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(2), one Fe(10), one Fe(12), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(7), and two equivalent Fe(4) atoms. The Fe(5)-Fe(10) bond length is 2.49 Å. The Fe(5)-Fe(12) bond length is 2.77 Å. The Fe(5)-Fe(13) bond length is 2.77 Å. The Fe(5)-Fe(16) bond length is 2.61 Å. The Fe(5)-Fe(17) bond length is 2.55 Å. The Fe(5)-Fe(19) bond length is 2.61 Å. The Fe(5)-Fe(22) bond length is 2.55 Å. The Fe(5)-Fe(7) bond length is 2.49 Å. In the sixth Fe site, Fe(6) is bonded in a 12-coordinate geometry to one Tb(3), one Sm(1), one Fe(11), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(8), one Fe(9), and two equivalent Fe(3) atoms. The Fe(6)-Fe(11) bond length is 2.76 Å. The Fe(6)-Fe(14) bond length is 2.76 Å. The Fe(6)-Fe(15) bond length is 2.62 Å. The Fe(6)-Fe(18) bond length is 2.55 Å. The Fe(6)-Fe(20) bond length is 2.62 Å. The Fe(6)-Fe(21) bond length is 2.55 Å. The Fe(6)-Fe(8) bond length is 2.49 Å. The Fe(6)-Fe(9) bond length is 2.49 Å. In the seventh Fe site, Fe(7) is bonded in a 12-coordinate geometry to one Tb(2), one Sm(1), one Fe(1), one Fe(12), one Fe(13), one Fe(19), one Fe(21), one Fe(4), one Fe(5), one Fe(7), and two equivalent Fe(17) atoms. The Fe(7)-Fe(12) bond length is 2.76 Å. The Fe(7)-Fe(13) bond length is 2.77 Å. The Fe(7)-Fe(19) bond length is 2.56 Å. The Fe(7)-Fe(21) bond length is 2.62 Å. The Fe(7)-Fe(7) bond length is 2.49 Å. There is one shorter (2.54 Å) and one longer (2.62 Å) Fe(7)-Fe(17) bond length. In the eighth Fe site, Fe(8) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(3), one Fe(11), one Fe(14), one Fe(2), one Fe(20), one Fe(22), one Fe(3), one Fe(6), one Fe(8), and two equivalent Fe(18) atoms. The Fe(8)-Fe(11) bond length is 2.77 Å. The Fe(8)-Fe(14) bond length is 2.77 Å. The Fe(8)-Fe(20) bond length is 2.55 Å. The Fe(8)-Fe(22) bond length is 2.61 Å. The Fe(8)-Fe(8) bond length is 2.49 Å. There is one shorter (2.55 Å) and one longer (2.62 Å) Fe(8)-Fe(18) bond length. In the ninth Fe site, Fe(9) is bonded in a 12-coordinate geometry to one Tb(2), one Sm(1), one Fe(1), one Fe(11), one Fe(14), one Fe(15), one Fe(17), one Fe(3), one Fe(6), one Fe(9), and two equivalent Fe(21) atoms. The Fe(9)-Fe(11) bond length is 2.76 Å. The Fe(9)-Fe(14) bond length is 2.77 Å. The Fe(9)-Fe(15) bond length is 2.54 Å. The Fe(9)-Fe(17) bond length is 2.63 Å. The Fe(9)-Fe(9) bond length is 2.48 Å. There is one shorter (2.55 Å) and one longer (2.62 Å) Fe(9)-Fe(21) bond length. In the tenth Fe site, Fe(10) is bonded in a 12-coordinate geometry to one Tb(1), one Tb(3), one Fe(10), one Fe(12), one Fe(13), one Fe(16), one Fe(18), one Fe(2), one Fe(4), one Fe(5), and two equivalent Fe(22) atoms. The Fe(10)-Fe(10) bond length is 2.49 Å. The Fe(10)-Fe(12) bond length is 2.77 Å. The Fe(10)-Fe(13) bond length is 2.77 Å. The Fe(10)-Fe(16) bond length is 2.55 Å. The Fe(10)-Fe(18) bond length is 2.61 Å. There is one shorter (2.55 Å) and one longer (2.62 Å) Fe(10)-Fe(22) bond length. In the eleventh Fe site, Fe(11) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(1), one Fe(14), one Fe(20), two equivalent Fe(21), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(8), and two equivalent Fe(9) atoms. The Fe(11)-Fe(14) bond length is 2.41 Å. The Fe(11)-Fe(20) bond length is 2.65 Å. Both Fe(11)-Fe(21) bond lengths are 2.65 Å. In the twelfth Fe site, Fe(12) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(13), one Fe(19), one Fe(2), two equivalent Fe(10), two equivalent Fe(22), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(7) atoms. The Fe(12)-Fe(13) bond length is 2.42 Å. The Fe(12)-Fe(19) bond length is 2.65 Å. Both Fe(12)-Fe(22) bond lengths are 2.65 Å. In the thirteenth Fe site, Fe(13) is bonded in a 14-coordinate geometry to one Tb(2), one Fe(1), one Fe(12), one Fe(16), two equivalent Fe(10), two equivalent Fe(17), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(7) atoms. The Fe(13)-Fe(16) bond length is 2.65 Å. Both Fe(13)-Fe(17) bond lengths are 2.64 Å. In the fourteenth Fe site, Fe(14) is bonded in a 14-coordinate geometry to one Tb(3), one Fe(11), one Fe(15), one Fe(2), two equivalent Fe(18), two equivalent Fe(3), two equivalent Fe(6), two equivalent Fe(8), and two equivalent Fe(9) atoms. The Fe(14)-Fe(15) bond length is 2.64 Å. Both Fe(14)-Fe(18) bond lengths are 2.65 Å. In the fifteenth Fe site, Fe(15) is bonded to one Tb(2), one Tb(3), one Sm(1), one Fe(14), two equivalent Fe(21), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Fe(9) atoms to form FeTb2SmFe9 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(16)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with three equivalent Fe(1)TbSmFe10 cuboctahedra, corners with four equivalent Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(3)TbSmFe10 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. Both Fe(15)-Fe(21) bond lengths are 2.48 Å. In the sixteenth Fe site, Fe(16) is bonded to one Tb(1), one Tb(2), one Tb(3), one Fe(13), two equivalent Fe(10), two equivalent Fe(22), two equivalent Fe(4), and two equivalent Fe(5) atoms to form FeTb3Fe9 cuboctahedra that share corners with two equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(19)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(2)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra, edges with two equivalent Fe(4)Tb2Fe10 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra. Both Fe(16)-Fe(22) bond lengths are 2.48 Å. In the seventeenth Fe site, Fe(17) is bonded to two equivalent Tb(2), one Sm(1), one Fe(1), one Fe(13), one Fe(19), one Fe(21), one Fe(4), one Fe(5), one Fe(9), and two equivalent Fe(7) atoms to form FeTb2SmFe9 cuboctahedra that share  a cornercorner with one Fe(20)Tb2SmFe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(19)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(21)TbSm2Fe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(17)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, and faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra. The Fe(17)-Fe(19) bond length is 2.48 Å. The Fe(17)-Fe(21) bond length is 2.48 Å. In the eighteenth Fe site, Fe(18) is bonded to one Tb(1), two equivalent Tb(3), one Fe(10), one Fe(14), one Fe(2), one Fe(20), one Fe(22), one Fe(3), one Fe(6), and two equivalent Fe(8) atoms to form FeTb3Fe9 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(19)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(22)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(18)Tb3Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. The Fe(18)-Fe(20) bond length is 2.48 Å. The Fe(18)-Fe(22) bond length is 2.48 Å. In the nineteenth Fe site, Fe(19) is bonded to one Tb(1), one Tb(2), one Sm(1), one Fe(12), two equivalent Fe(17), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(7) atoms to form FeTb2SmFe9 cuboctahedra that share corners with two equivalent Fe(20)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(16)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(1)TbSmFe10 cuboctahedra, corners with four equivalent Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(15)Tb2SmFe9 cuboctahedra, edges with two equivalent Fe(4)Tb2Fe10 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra. In the twentieth Fe site, Fe(20) is bonded to one Tb(1), one Tb(3), one Sm(1), one Fe(11), two equivalent Fe(18), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Fe(8) atoms to form FeTb2SmFe9 cuboctahedra that share corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(19)Tb2SmFe9 cuboctahedra, corners with three equivalent Fe(2)Tb2Fe10 cuboctahedra, corners with four equivalent Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(16)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, edges with two equivalent Fe(3)TbSmFe10 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the twenty-first Fe site, Fe(21) is bonded to one Tb(2), two equivalent Sm(1), one Fe(1), one Fe(11), one Fe(15), one Fe(17), one Fe(3), one Fe(6), one Fe(7), and two equivalent Fe(9) atoms to form FeTbSm2Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Tb3Fe9 cuboctahedra,  a cornercorner with one Fe(1)TbSmFe10 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(18)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(17)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(1)TbSmFe10 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(21)TbSm2Fe9 cuboctahedra,  a faceface with one Fe(15)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(1)TbSmFe10 cuboctahedra, faces with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, faces with two equivalent Fe(21)TbSm2Fe9 cuboctahedra, and faces with two equivalent Fe(3)TbSmFe10 cuboctahedra. In the twenty-second Fe site, Fe(22) is bonded to one Tb(3), two equivalent Tb(1), one Fe(12), one Fe(16), one Fe(18), one Fe(2), one Fe(4), one Fe(5), one Fe(8), and two equivalent Fe(10) atoms to form FeTb3Fe9 cuboctahedra that share  a cornercorner with one Fe(2)Tb2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(4)Tb2Fe10 cuboctahedra, corners with two equivalent Fe(17)Tb2SmFe9 cuboctahedra, corners with two equivalent Fe(16)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(22)Tb3Fe9 cuboctahedra, corners with two equivalent Fe(3)TbSmFe10 cuboctahedra, corners with three equivalent Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Tb2Fe10 cuboctahedra,  an edgeedge with one Fe(19)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(20)Tb2SmFe9 cuboctahedra,  an edgeedge with one Fe(18)Tb3Fe9 cuboctahedra,  an edgeedge with one Fe(3)TbSmFe10 cuboctahedra, edges with two equivalent Fe(22)Tb3Fe9 cuboctahedra,  a faceface with one Fe(2)Tb2Fe10 cuboctahedra,  a faceface with one Fe(19)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(20)Tb2SmFe9 cuboctahedra,  a faceface with one Fe(16)Tb3Fe9 cuboctahedra, faces with two equivalent Fe(4)Tb2Fe10 cuboctahedra, faces with two equivalent Fe(18)Tb3Fe9 cuboctahedra, and faces with two equivalent Fe(22)Tb3Fe9 cuboctahedra.