Sm4Fe31Co3 crystallizes in the triclinic P1 space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 19-coordinate geometry to one Fe(11), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(24), one Fe(28), one Fe(29), one Fe(3), one Fe(5), one Fe(7), one Fe(9), two equivalent Fe(26), two equivalent Fe(30), one Co(1), and one Co(3) atom. In the second Sm site, Sm(2) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(10), one Fe(12), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(23), one Fe(25), one Fe(28), one Fe(29), one Fe(4), one Fe(6), one Fe(8), two equivalent Fe(27), two equivalent Fe(31), and one Co(2) atom. In the third Sm site, Sm(3) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(12), one Fe(13), one Fe(15), one Fe(18), one Fe(21), one Fe(23), one Fe(26), one Fe(28), one Fe(3), one Fe(30), one Fe(5), one Fe(7), one Fe(9), two equivalent Fe(24), one Co(3), and two equivalent Co(1) atoms. In the fourth Sm site, Sm(4) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(11), one Fe(14), one Fe(16), one Fe(17), one Fe(2), one Fe(22), one Fe(23), one Fe(27), one Fe(29), one Fe(31), one Fe(4), one Fe(6), one Fe(8), two equivalent Fe(25), one Co(3), and two equivalent Co(2) atoms. There are thirty-one inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(24), one Fe(27), one Fe(28), one Fe(8), and one Fe(9) atom. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(4), one Fe(10), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(25), one Fe(26), one Fe(29), one Fe(7), and one Co(3) atom. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(12), one Fe(13), one Fe(18), one Fe(20), one Fe(21), one Fe(24), one Fe(28), one Fe(30), one Fe(9), and one Co(1) atom. In the fourth Fe site, Fe(4) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(10), one Fe(11), one Fe(14), one Fe(17), one Fe(19), one Fe(22), one Fe(25), one Fe(29), one Fe(31), and one Co(2) atom. In the fifth Fe site, Fe(5) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(11), one Fe(13), one Fe(16), one Fe(19), one Fe(22), one Fe(26), one Fe(30), one Fe(7), one Co(1), and one Co(3) atom. In the sixth Fe site, Fe(6) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(12), one Fe(14), one Fe(15), one Fe(20), one Fe(21), one Fe(23), one Fe(27), one Fe(31), one Fe(8), and one Co(2) atom. In the seventh Fe site, Fe(7) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(13), one Fe(17), one Fe(19), one Fe(2), one Fe(22), one Fe(24), one Fe(26), one Fe(30), one Fe(5), and one Co(3) atom. In the eighth Fe site, Fe(8) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(1), one Fe(14), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(25), one Fe(27), one Fe(31), and one Fe(6) atom. In the ninth Fe site, Fe(9) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(1), one Fe(13), one Fe(15), one Fe(20), one Fe(21), one Fe(24), one Fe(26), one Fe(28), one Fe(3), and one Co(1) atom. In the tenth Fe site, Fe(10) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(14), one Fe(16), one Fe(19), one Fe(2), one Fe(22), one Fe(25), one Fe(27), one Fe(29), one Fe(4), and one Co(2) atom. In the eleventh Fe site, Fe(11) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(4), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(29), one Fe(30), one Fe(4), one Fe(5), one Co(2), and one Co(3) atom. In the twelfth Fe site, Fe(12) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(28), one Fe(3), one Fe(31), one Fe(6), and one Co(1) atom. In the thirteenth Fe site, Fe(13) is bonded to one Sm(1), one Sm(3), one Fe(19), one Fe(21), one Fe(24), one Fe(26), one Fe(3), one Fe(30), one Fe(5), one Fe(7), one Fe(9), and one Co(1) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with three equivalent Co(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and  a faceface with one Co(3)Sm3Fe9 cuboctahedra. In the fourteenth Fe site, Fe(14) is bonded to one Sm(2), one Sm(4), one Fe(10), one Fe(20), one Fe(22), one Fe(25), one Fe(27), one Fe(31), one Fe(4), one Fe(6), one Fe(8), and one Co(2) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with three equivalent Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra, and  a faceface with one Co(2)Sm3Fe9 cuboctahedra. In the fifteenth Fe site, Fe(15) is bonded to one Sm(2), one Sm(3), one Fe(1), one Fe(12), one Fe(20), one Fe(21), one Fe(23), one Fe(27), one Fe(28), one Fe(6), one Fe(9), and one Co(1) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(18)Sm2Fe10 cuboctahedra. In the sixteenth Fe site, Fe(16) is bonded to one Sm(1), one Sm(4), one Fe(10), one Fe(11), one Fe(19), one Fe(2), one Fe(22), one Fe(26), one Fe(29), one Fe(5), one Co(2), and one Co(3) atom to form distorted FeSm2Fe8Co2 cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(17)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(17)Sm2Fe9Co cuboctahedra. In the seventeenth Fe site, Fe(17) is bonded to one Sm(1), one Sm(4), one Fe(11), one Fe(19), one Fe(2), one Fe(22), one Fe(25), one Fe(29), one Fe(30), one Fe(4), one Fe(7), and one Co(3) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra. In the eighteenth Fe site, Fe(18) is bonded to one Sm(2), one Sm(3), one Fe(1), one Fe(12), one Fe(20), one Fe(21), one Fe(23), one Fe(24), one Fe(28), one Fe(3), one Fe(31), and one Fe(8) atom to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(15)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(15)Sm2Fe9Co cuboctahedra. In the nineteenth Fe site, Fe(19) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(17), one Fe(2), one Fe(22), one Fe(26), one Fe(29), one Fe(30), one Fe(4), one Fe(5), and one Fe(7) atom. In the twentieth Fe site, Fe(20) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(1), one Fe(12), one Fe(14), one Fe(15), one Fe(18), one Fe(21), one Fe(27), one Fe(28), one Fe(3), one Fe(31), one Fe(6), one Fe(8), and one Fe(9) atom. In the twenty-first Fe site, Fe(21) is bonded in a 14-coordinate geometry to one Sm(3), one Fe(1), one Fe(12), one Fe(13), one Fe(15), one Fe(18), one Fe(20), one Fe(23), one Fe(24), one Fe(3), one Fe(6), one Fe(8), one Fe(9), and one Co(1) atom. In the twenty-second Fe site, Fe(22) is bonded in a 14-coordinate geometry to one Sm(4), one Fe(10), one Fe(11), one Fe(14), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(25), one Fe(4), one Fe(5), one Fe(7), one Co(2), and one Co(3) atom. In the twenty-third Fe site, Fe(23) is bonded to one Sm(2), one Sm(3), one Sm(4), one Fe(1), one Fe(12), one Fe(15), one Fe(18), one Fe(21), one Fe(27), one Fe(31), one Fe(6), and one Fe(8) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and  a faceface with one Co(2)Sm3Fe9 cuboctahedra. In the twenty-fourth Fe site, Fe(24) is bonded to one Sm(1), two equivalent Sm(3), one Fe(1), one Fe(13), one Fe(18), one Fe(21), one Fe(26), one Fe(28), one Fe(3), one Fe(7), and one Fe(9) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Co(1)Sm3Fe9 cuboctahedra. In the twenty-fifth Fe site, Fe(25) is bonded to one Sm(2), two equivalent Sm(4), one Fe(10), one Fe(14), one Fe(17), one Fe(2), one Fe(22), one Fe(27), one Fe(29), one Fe(4), and one Fe(8) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(15)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Co(2)Sm3Fe9 cuboctahedra. In the twenty-sixth Fe site, Fe(26) is bonded to one Sm(3), two equivalent Sm(1), one Fe(13), one Fe(16), one Fe(19), one Fe(2), one Fe(24), one Fe(5), one Fe(7), one Fe(9), and one Co(3) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra. In the twenty-seventh Fe site, Fe(27) is bonded to one Sm(4), two equivalent Sm(2), one Fe(1), one Fe(10), one Fe(14), one Fe(15), one Fe(20), one Fe(23), one Fe(25), one Fe(6), and one Fe(8) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(17)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(31)Sm3Fe8Co cuboctahedra. In the twenty-eighth Fe site, Fe(28) is bonded to one Sm(1), one Sm(2), one Sm(3), one Fe(1), one Fe(12), one Fe(15), one Fe(18), one Fe(20), one Fe(24), one Fe(3), one Fe(9), and one Co(1) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra, and  a faceface with one Co(1)Sm3Fe9 cuboctahedra. In the twenty-ninth Fe site, Fe(29) is bonded to one Sm(1), one Sm(2), one Sm(4), one Fe(10), one Fe(11), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(25), one Fe(4), and one Co(2) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra, and  a faceface with one Co(3)Sm3Fe9 cuboctahedra. In the thirtieth Fe site, Fe(30) is bonded to one Sm(3), two equivalent Sm(1), one Fe(11), one Fe(13), one Fe(17), one Fe(19), one Fe(3), one Fe(5), one Fe(7), one Co(1), and one Co(3) atom to form FeSm3Fe7Co2 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(15)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(26)Sm3Fe8Co cuboctahedra. In the thirty-first Fe site, Fe(31) is bonded to one Sm(4), two equivalent Sm(2), one Fe(12), one Fe(14), one Fe(18), one Fe(20), one Fe(23), one Fe(4), one Fe(6), one Fe(8), and one Co(2) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(27)Sm3Fe9 cuboctahedra. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one Sm(1), two equivalent Sm(3), one Fe(12), one Fe(13), one Fe(15), one Fe(21), one Fe(28), one Fe(3), one Fe(30), one Fe(5), and one Fe(9) atom to form distorted CoSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(17)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(24)Sm3Fe9 cuboctahedra. In the second Co site, Co(2) is bonded to one Sm(2), two equivalent Sm(4), one Fe(10), one Fe(11), one Fe(14), one Fe(16), one Fe(22), one Fe(29), one Fe(31), one Fe(4), and one Fe(6) atom to form distorted CoSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(25)Sm3Fe9 cuboctahedra. In the third Co site, Co(3) is bonded to one Sm(1), one Sm(3), one Sm(4), one Fe(11), one Fe(16), one Fe(17), one Fe(2), one Fe(22), one Fe(26), one Fe(30), one Fe(5), and one Fe(7) atom to form CoSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and  a faceface with one Co(2)Sm3Fe9 cuboctahedra.
Sm4Fe31Co3 crystallizes in the triclinic P1 space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 19-coordinate geometry to one Fe(11), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(24), one Fe(28), one Fe(29), one Fe(3), one Fe(5), one Fe(7), one Fe(9), two equivalent Fe(26), two equivalent Fe(30), one Co(1), and one Co(3) atom. The Sm(1)-Fe(11) bond length is 3.00 Å. The Sm(1)-Fe(13) bond length is 3.29 Å. The Sm(1)-Fe(16) bond length is 3.28 Å. The Sm(1)-Fe(17) bond length is 3.29 Å. The Sm(1)-Fe(19) bond length is 3.08 Å. The Sm(1)-Fe(2) bond length is 3.02 Å. The Sm(1)-Fe(24) bond length is 3.08 Å. The Sm(1)-Fe(28) bond length is 3.22 Å. The Sm(1)-Fe(29) bond length is 3.22 Å. The Sm(1)-Fe(3) bond length is 3.03 Å. The Sm(1)-Fe(5) bond length is 3.01 Å. The Sm(1)-Fe(7) bond length is 3.05 Å. The Sm(1)-Fe(9) bond length is 3.02 Å. There is one shorter (3.22 Å) and one longer (3.23 Å) Sm(1)-Fe(26) bond length. There is one shorter (3.19 Å) and one longer (3.23 Å) Sm(1)-Fe(30) bond length. The Sm(1)-Co(1) bond length is 3.10 Å. The Sm(1)-Co(3) bond length is 3.10 Å. In the second Sm site, Sm(2) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(10), one Fe(12), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(23), one Fe(25), one Fe(28), one Fe(29), one Fe(4), one Fe(6), one Fe(8), two equivalent Fe(27), two equivalent Fe(31), and one Co(2) atom. The Sm(2)-Fe(1) bond length is 3.05 Å. The Sm(2)-Fe(10) bond length is 3.01 Å. The Sm(2)-Fe(12) bond length is 3.02 Å. The Sm(2)-Fe(14) bond length is 3.28 Å. The Sm(2)-Fe(15) bond length is 3.28 Å. The Sm(2)-Fe(18) bond length is 3.29 Å. The Sm(2)-Fe(20) bond length is 3.07 Å. The Sm(2)-Fe(23) bond length is 3.09 Å. The Sm(2)-Fe(25) bond length is 3.09 Å. The Sm(2)-Fe(28) bond length is 3.22 Å. The Sm(2)-Fe(29) bond length is 3.22 Å. The Sm(2)-Fe(4) bond length is 3.02 Å. The Sm(2)-Fe(6) bond length is 3.00 Å. The Sm(2)-Fe(8) bond length is 3.04 Å. There is one shorter (3.20 Å) and one longer (3.24 Å) Sm(2)-Fe(27) bond length. Both Sm(2)-Fe(31) bond lengths are 3.21 Å. The Sm(2)-Co(2) bond length is 3.11 Å. In the third Sm site, Sm(3) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(12), one Fe(13), one Fe(15), one Fe(18), one Fe(21), one Fe(23), one Fe(26), one Fe(28), one Fe(3), one Fe(30), one Fe(5), one Fe(7), one Fe(9), two equivalent Fe(24), one Co(3), and two equivalent Co(1) atoms. The Sm(3)-Fe(1) bond length is 3.02 Å. The Sm(3)-Fe(12) bond length is 3.05 Å. The Sm(3)-Fe(13) bond length is 3.29 Å. The Sm(3)-Fe(15) bond length is 3.28 Å. The Sm(3)-Fe(18) bond length is 3.30 Å. The Sm(3)-Fe(21) bond length is 3.06 Å. The Sm(3)-Fe(23) bond length is 3.20 Å. The Sm(3)-Fe(26) bond length is 3.09 Å. The Sm(3)-Fe(28) bond length is 3.08 Å. The Sm(3)-Fe(3) bond length is 3.04 Å. The Sm(3)-Fe(30) bond length is 3.07 Å. The Sm(3)-Fe(5) bond length is 3.02 Å. The Sm(3)-Fe(7) bond length is 3.02 Å. The Sm(3)-Fe(9) bond length is 3.01 Å. There is one shorter (3.18 Å) and one longer (3.24 Å) Sm(3)-Fe(24) bond length. The Sm(3)-Co(3) bond length is 3.23 Å. There is one shorter (3.20 Å) and one longer (3.24 Å) Sm(3)-Co(1) bond length. In the fourth Sm site, Sm(4) is bonded in a 19-coordinate geometry to one Fe(10), one Fe(11), one Fe(14), one Fe(16), one Fe(17), one Fe(2), one Fe(22), one Fe(23), one Fe(27), one Fe(29), one Fe(31), one Fe(4), one Fe(6), one Fe(8), two equivalent Fe(25), one Co(3), and two equivalent Co(2) atoms. The Sm(4)-Fe(10) bond length is 3.01 Å. The Sm(4)-Fe(11) bond length is 3.03 Å. The Sm(4)-Fe(14) bond length is 3.29 Å. The Sm(4)-Fe(16) bond length is 3.27 Å. The Sm(4)-Fe(17) bond length is 3.30 Å. The Sm(4)-Fe(2) bond length is 3.00 Å. The Sm(4)-Fe(22) bond length is 3.07 Å. The Sm(4)-Fe(23) bond length is 3.24 Å. The Sm(4)-Fe(27) bond length is 3.10 Å. The Sm(4)-Fe(29) bond length is 3.08 Å. The Sm(4)-Fe(31) bond length is 3.07 Å. The Sm(4)-Fe(4) bond length is 3.03 Å. The Sm(4)-Fe(6) bond length is 3.02 Å. The Sm(4)-Fe(8) bond length is 3.02 Å. There is one shorter (3.19 Å) and one longer (3.24 Å) Sm(4)-Fe(25) bond length. The Sm(4)-Co(3) bond length is 3.20 Å. There is one shorter (3.21 Å) and one longer (3.24 Å) Sm(4)-Co(2) bond length. There are thirty-one inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(24), one Fe(27), one Fe(28), one Fe(8), and one Fe(9) atom. The Fe(1)-Fe(15) bond length is 2.45 Å. The Fe(1)-Fe(18) bond length is 2.44 Å. The Fe(1)-Fe(20) bond length is 2.75 Å. The Fe(1)-Fe(21) bond length is 2.75 Å. The Fe(1)-Fe(23) bond length is 2.64 Å. The Fe(1)-Fe(24) bond length is 2.55 Å. The Fe(1)-Fe(27) bond length is 2.54 Å. The Fe(1)-Fe(28) bond length is 2.65 Å. The Fe(1)-Fe(8) bond length is 2.48 Å. The Fe(1)-Fe(9) bond length is 2.49 Å. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(4), one Fe(10), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(25), one Fe(26), one Fe(29), one Fe(7), and one Co(3) atom. The Fe(2)-Fe(10) bond length is 2.50 Å. The Fe(2)-Fe(16) bond length is 2.45 Å. The Fe(2)-Fe(17) bond length is 2.44 Å. The Fe(2)-Fe(19) bond length is 2.77 Å. The Fe(2)-Fe(22) bond length is 2.77 Å. The Fe(2)-Fe(25) bond length is 2.55 Å. The Fe(2)-Fe(26) bond length is 2.54 Å. The Fe(2)-Fe(29) bond length is 2.64 Å. The Fe(2)-Fe(7) bond length is 2.48 Å. The Fe(2)-Co(3) bond length is 2.64 Å. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(12), one Fe(13), one Fe(18), one Fe(20), one Fe(21), one Fe(24), one Fe(28), one Fe(30), one Fe(9), and one Co(1) atom. The Fe(3)-Fe(12) bond length is 2.47 Å. The Fe(3)-Fe(13) bond length is 2.44 Å. The Fe(3)-Fe(18) bond length is 2.44 Å. The Fe(3)-Fe(20) bond length is 2.75 Å. The Fe(3)-Fe(21) bond length is 2.76 Å. The Fe(3)-Fe(24) bond length is 2.65 Å. The Fe(3)-Fe(28) bond length is 2.54 Å. The Fe(3)-Fe(30) bond length is 2.66 Å. The Fe(3)-Fe(9) bond length is 2.48 Å. The Fe(3)-Co(1) bond length is 2.53 Å. In the fourth Fe site, Fe(4) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(10), one Fe(11), one Fe(14), one Fe(17), one Fe(19), one Fe(22), one Fe(25), one Fe(29), one Fe(31), and one Co(2) atom. The Fe(4)-Fe(10) bond length is 2.49 Å. The Fe(4)-Fe(11) bond length is 2.48 Å. The Fe(4)-Fe(14) bond length is 2.45 Å. The Fe(4)-Fe(17) bond length is 2.44 Å. The Fe(4)-Fe(19) bond length is 2.75 Å. The Fe(4)-Fe(22) bond length is 2.76 Å. The Fe(4)-Fe(25) bond length is 2.65 Å. The Fe(4)-Fe(29) bond length is 2.53 Å. The Fe(4)-Fe(31) bond length is 2.65 Å. The Fe(4)-Co(2) bond length is 2.53 Å. In the fifth Fe site, Fe(5) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(11), one Fe(13), one Fe(16), one Fe(19), one Fe(22), one Fe(26), one Fe(30), one Fe(7), one Co(1), and one Co(3) atom. The Fe(5)-Fe(11) bond length is 2.49 Å. The Fe(5)-Fe(13) bond length is 2.44 Å. The Fe(5)-Fe(16) bond length is 2.45 Å. The Fe(5)-Fe(19) bond length is 2.76 Å. The Fe(5)-Fe(22) bond length is 2.76 Å. The Fe(5)-Fe(26) bond length is 2.64 Å. The Fe(5)-Fe(30) bond length is 2.54 Å. The Fe(5)-Fe(7) bond length is 2.48 Å. The Fe(5)-Co(1) bond length is 2.65 Å. The Fe(5)-Co(3) bond length is 2.53 Å. In the sixth Fe site, Fe(6) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(12), one Fe(14), one Fe(15), one Fe(20), one Fe(21), one Fe(23), one Fe(27), one Fe(31), one Fe(8), and one Co(2) atom. The Fe(6)-Fe(12) bond length is 2.49 Å. The Fe(6)-Fe(14) bond length is 2.45 Å. The Fe(6)-Fe(15) bond length is 2.45 Å. The Fe(6)-Fe(20) bond length is 2.77 Å. The Fe(6)-Fe(21) bond length is 2.77 Å. The Fe(6)-Fe(23) bond length is 2.55 Å. The Fe(6)-Fe(27) bond length is 2.63 Å. The Fe(6)-Fe(31) bond length is 2.55 Å. The Fe(6)-Fe(8) bond length is 2.49 Å. The Fe(6)-Co(2) bond length is 2.65 Å. In the seventh Fe site, Fe(7) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(13), one Fe(17), one Fe(19), one Fe(2), one Fe(22), one Fe(24), one Fe(26), one Fe(30), one Fe(5), and one Co(3) atom. The Fe(7)-Fe(13) bond length is 2.44 Å. The Fe(7)-Fe(17) bond length is 2.44 Å. The Fe(7)-Fe(19) bond length is 2.75 Å. The Fe(7)-Fe(22) bond length is 2.75 Å. The Fe(7)-Fe(24) bond length is 2.64 Å. The Fe(7)-Fe(26) bond length is 2.53 Å. The Fe(7)-Fe(30) bond length is 2.66 Å. The Fe(7)-Co(3) bond length is 2.53 Å. In the eighth Fe site, Fe(8) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(1), one Fe(14), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(25), one Fe(27), one Fe(31), and one Fe(6) atom. The Fe(8)-Fe(14) bond length is 2.45 Å. The Fe(8)-Fe(18) bond length is 2.44 Å. The Fe(8)-Fe(20) bond length is 2.76 Å. The Fe(8)-Fe(21) bond length is 2.76 Å. The Fe(8)-Fe(23) bond length is 2.54 Å. The Fe(8)-Fe(25) bond length is 2.64 Å. The Fe(8)-Fe(27) bond length is 2.54 Å. The Fe(8)-Fe(31) bond length is 2.65 Å. In the ninth Fe site, Fe(9) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(3), one Fe(1), one Fe(13), one Fe(15), one Fe(20), one Fe(21), one Fe(24), one Fe(26), one Fe(28), one Fe(3), and one Co(1) atom. The Fe(9)-Fe(13) bond length is 2.44 Å. The Fe(9)-Fe(15) bond length is 2.45 Å. The Fe(9)-Fe(20) bond length is 2.77 Å. The Fe(9)-Fe(21) bond length is 2.76 Å. The Fe(9)-Fe(24) bond length is 2.55 Å. The Fe(9)-Fe(26) bond length is 2.64 Å. The Fe(9)-Fe(28) bond length is 2.55 Å. The Fe(9)-Co(1) bond length is 2.64 Å. In the tenth Fe site, Fe(10) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(4), one Fe(14), one Fe(16), one Fe(19), one Fe(2), one Fe(22), one Fe(25), one Fe(27), one Fe(29), one Fe(4), and one Co(2) atom. The Fe(10)-Fe(14) bond length is 2.45 Å. The Fe(10)-Fe(16) bond length is 2.45 Å. The Fe(10)-Fe(19) bond length is 2.76 Å. The Fe(10)-Fe(22) bond length is 2.76 Å. The Fe(10)-Fe(25) bond length is 2.55 Å. The Fe(10)-Fe(27) bond length is 2.63 Å. The Fe(10)-Fe(29) bond length is 2.54 Å. The Fe(10)-Co(2) bond length is 2.64 Å. In the eleventh Fe site, Fe(11) is bonded in a 12-coordinate geometry to one Sm(1), one Sm(4), one Fe(16), one Fe(17), one Fe(19), one Fe(22), one Fe(29), one Fe(30), one Fe(4), one Fe(5), one Co(2), and one Co(3) atom. The Fe(11)-Fe(16) bond length is 2.44 Å. The Fe(11)-Fe(17) bond length is 2.44 Å. The Fe(11)-Fe(19) bond length is 2.77 Å. The Fe(11)-Fe(22) bond length is 2.77 Å. The Fe(11)-Fe(29) bond length is 2.64 Å. The Fe(11)-Fe(30) bond length is 2.54 Å. The Fe(11)-Co(2) bond length is 2.53 Å. The Fe(11)-Co(3) bond length is 2.65 Å. In the twelfth Fe site, Fe(12) is bonded in a 12-coordinate geometry to one Sm(2), one Sm(3), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(28), one Fe(3), one Fe(31), one Fe(6), and one Co(1) atom. The Fe(12)-Fe(15) bond length is 2.44 Å. The Fe(12)-Fe(18) bond length is 2.44 Å. The Fe(12)-Fe(20) bond length is 2.75 Å. The Fe(12)-Fe(21) bond length is 2.75 Å. The Fe(12)-Fe(23) bond length is 2.64 Å. The Fe(12)-Fe(28) bond length is 2.65 Å. The Fe(12)-Fe(31) bond length is 2.54 Å. The Fe(12)-Co(1) bond length is 2.53 Å. In the thirteenth Fe site, Fe(13) is bonded to one Sm(1), one Sm(3), one Fe(19), one Fe(21), one Fe(24), one Fe(26), one Fe(3), one Fe(30), one Fe(5), one Fe(7), one Fe(9), and one Co(1) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with three equivalent Co(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and  a faceface with one Co(3)Sm3Fe9 cuboctahedra. The Fe(13)-Fe(19) bond length is 2.60 Å. The Fe(13)-Fe(21) bond length is 2.61 Å. The Fe(13)-Fe(24) bond length is 2.46 Å. The Fe(13)-Fe(26) bond length is 2.46 Å. The Fe(13)-Fe(30) bond length is 2.46 Å. The Fe(13)-Co(1) bond length is 2.44 Å. In the fourteenth Fe site, Fe(14) is bonded to one Sm(2), one Sm(4), one Fe(10), one Fe(20), one Fe(22), one Fe(25), one Fe(27), one Fe(31), one Fe(4), one Fe(6), one Fe(8), and one Co(2) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with three equivalent Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra, and  a faceface with one Co(2)Sm3Fe9 cuboctahedra. The Fe(14)-Fe(20) bond length is 2.60 Å. The Fe(14)-Fe(22) bond length is 2.60 Å. The Fe(14)-Fe(25) bond length is 2.46 Å. The Fe(14)-Fe(27) bond length is 2.45 Å. The Fe(14)-Fe(31) bond length is 2.45 Å. The Fe(14)-Co(2) bond length is 2.43 Å. In the fifteenth Fe site, Fe(15) is bonded to one Sm(2), one Sm(3), one Fe(1), one Fe(12), one Fe(20), one Fe(21), one Fe(23), one Fe(27), one Fe(28), one Fe(6), one Fe(9), and one Co(1) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(18)Sm2Fe10 cuboctahedra. The Fe(15)-Fe(20) bond length is 2.60 Å. The Fe(15)-Fe(21) bond length is 2.60 Å. The Fe(15)-Fe(23) bond length is 2.46 Å. The Fe(15)-Fe(27) bond length is 2.45 Å. The Fe(15)-Fe(28) bond length is 2.46 Å. The Fe(15)-Co(1) bond length is 2.44 Å. In the sixteenth Fe site, Fe(16) is bonded to one Sm(1), one Sm(4), one Fe(10), one Fe(11), one Fe(19), one Fe(2), one Fe(22), one Fe(26), one Fe(29), one Fe(5), one Co(2), and one Co(3) atom to form distorted FeSm2Fe8Co2 cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(17)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(17)Sm2Fe9Co cuboctahedra. The Fe(16)-Fe(19) bond length is 2.60 Å. The Fe(16)-Fe(22) bond length is 2.60 Å. The Fe(16)-Fe(26) bond length is 2.45 Å. The Fe(16)-Fe(29) bond length is 2.46 Å. The Fe(16)-Co(2) bond length is 2.44 Å. The Fe(16)-Co(3) bond length is 2.44 Å. In the seventeenth Fe site, Fe(17) is bonded to one Sm(1), one Sm(4), one Fe(11), one Fe(19), one Fe(2), one Fe(22), one Fe(25), one Fe(29), one Fe(30), one Fe(4), one Fe(7), and one Co(3) atom to form distorted FeSm2Fe9Co cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra. The Fe(17)-Fe(19) bond length is 2.61 Å. The Fe(17)-Fe(22) bond length is 2.61 Å. The Fe(17)-Fe(25) bond length is 2.46 Å. The Fe(17)-Fe(29) bond length is 2.46 Å. The Fe(17)-Fe(30) bond length is 2.45 Å. The Fe(17)-Co(3) bond length is 2.44 Å. In the eighteenth Fe site, Fe(18) is bonded to one Sm(2), one Sm(3), one Fe(1), one Fe(12), one Fe(20), one Fe(21), one Fe(23), one Fe(24), one Fe(28), one Fe(3), one Fe(31), and one Fe(8) atom to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(15)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(15)Sm2Fe9Co cuboctahedra. The Fe(18)-Fe(20) bond length is 2.61 Å. The Fe(18)-Fe(21) bond length is 2.61 Å. The Fe(18)-Fe(23) bond length is 2.45 Å. The Fe(18)-Fe(24) bond length is 2.45 Å. The Fe(18)-Fe(28) bond length is 2.46 Å. The Fe(18)-Fe(31) bond length is 2.46 Å. In the nineteenth Fe site, Fe(19) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(17), one Fe(2), one Fe(22), one Fe(26), one Fe(29), one Fe(30), one Fe(4), one Fe(5), and one Fe(7) atom. The Fe(19)-Fe(22) bond length is 2.40 Å. The Fe(19)-Fe(26) bond length is 2.65 Å. The Fe(19)-Fe(29) bond length is 2.64 Å. The Fe(19)-Fe(30) bond length is 2.66 Å. In the twentieth Fe site, Fe(20) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(1), one Fe(12), one Fe(14), one Fe(15), one Fe(18), one Fe(21), one Fe(27), one Fe(28), one Fe(3), one Fe(31), one Fe(6), one Fe(8), and one Fe(9) atom. The Fe(20)-Fe(21) bond length is 2.41 Å. The Fe(20)-Fe(27) bond length is 2.64 Å. The Fe(20)-Fe(28) bond length is 2.65 Å. The Fe(20)-Fe(31) bond length is 2.65 Å. In the twenty-first Fe site, Fe(21) is bonded in a 14-coordinate geometry to one Sm(3), one Fe(1), one Fe(12), one Fe(13), one Fe(15), one Fe(18), one Fe(20), one Fe(23), one Fe(24), one Fe(3), one Fe(6), one Fe(8), one Fe(9), and one Co(1) atom. The Fe(21)-Fe(23) bond length is 2.64 Å. The Fe(21)-Fe(24) bond length is 2.63 Å. The Fe(21)-Co(1) bond length is 2.63 Å. In the twenty-second Fe site, Fe(22) is bonded in a 14-coordinate geometry to one Sm(4), one Fe(10), one Fe(11), one Fe(14), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(25), one Fe(4), one Fe(5), one Fe(7), one Co(2), and one Co(3) atom. The Fe(22)-Fe(25) bond length is 2.63 Å. The Fe(22)-Co(2) bond length is 2.63 Å. The Fe(22)-Co(3) bond length is 2.62 Å. In the twenty-third Fe site, Fe(23) is bonded to one Sm(2), one Sm(3), one Sm(4), one Fe(1), one Fe(12), one Fe(15), one Fe(18), one Fe(21), one Fe(27), one Fe(31), one Fe(6), and one Fe(8) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and  a faceface with one Co(2)Sm3Fe9 cuboctahedra. The Fe(23)-Fe(27) bond length is 2.46 Å. The Fe(23)-Fe(31) bond length is 2.48 Å. In the twenty-fourth Fe site, Fe(24) is bonded to one Sm(1), two equivalent Sm(3), one Fe(1), one Fe(13), one Fe(18), one Fe(21), one Fe(26), one Fe(28), one Fe(3), one Fe(7), and one Fe(9) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Co(1)Sm3Fe9 cuboctahedra. The Fe(24)-Fe(26) bond length is 2.47 Å. The Fe(24)-Fe(28) bond length is 2.48 Å. In the twenty-fifth Fe site, Fe(25) is bonded to one Sm(2), two equivalent Sm(4), one Fe(10), one Fe(14), one Fe(17), one Fe(2), one Fe(22), one Fe(27), one Fe(29), one Fe(4), and one Fe(8) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(15)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Co(2)Sm3Fe9 cuboctahedra. The Fe(25)-Fe(27) bond length is 2.47 Å. The Fe(25)-Fe(29) bond length is 2.48 Å. In the twenty-sixth Fe site, Fe(26) is bonded to one Sm(3), two equivalent Sm(1), one Fe(13), one Fe(16), one Fe(19), one Fe(2), one Fe(24), one Fe(5), one Fe(7), one Fe(9), and one Co(3) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra. The Fe(26)-Co(3) bond length is 2.45 Å. In the twenty-seventh Fe site, Fe(27) is bonded to one Sm(4), two equivalent Sm(2), one Fe(1), one Fe(10), one Fe(14), one Fe(15), one Fe(20), one Fe(23), one Fe(25), one Fe(6), and one Fe(8) atom to form FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(17)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(31)Sm3Fe8Co cuboctahedra. In the twenty-eighth Fe site, Fe(28) is bonded to one Sm(1), one Sm(2), one Sm(3), one Fe(1), one Fe(12), one Fe(15), one Fe(18), one Fe(20), one Fe(24), one Fe(3), one Fe(9), and one Co(1) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(24)Sm3Fe9 cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra, and  a faceface with one Co(1)Sm3Fe9 cuboctahedra. The Fe(28)-Co(1) bond length is 2.45 Å. In the twenty-ninth Fe site, Fe(29) is bonded to one Sm(1), one Sm(2), one Sm(4), one Fe(10), one Fe(11), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(25), one Fe(4), and one Co(2) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(25)Sm3Fe9 cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(30)Sm3Fe7Co2 cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(31)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra, and  a faceface with one Co(3)Sm3Fe9 cuboctahedra. The Fe(29)-Co(2) bond length is 2.46 Å. In the thirtieth Fe site, Fe(30) is bonded to one Sm(3), two equivalent Sm(1), one Fe(11), one Fe(13), one Fe(17), one Fe(19), one Fe(3), one Fe(5), one Fe(7), one Co(1), and one Co(3) atom to form FeSm3Fe7Co2 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(23)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(2)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(15)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra, corners with two equivalent Co(3)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(26)Sm3Fe8Co cuboctahedra. The Fe(30)-Co(1) bond length is 2.46 Å. The Fe(30)-Co(3) bond length is 2.47 Å. In the thirty-first Fe site, Fe(31) is bonded to one Sm(4), two equivalent Sm(2), one Fe(12), one Fe(14), one Fe(18), one Fe(20), one Fe(23), one Fe(4), one Fe(6), one Fe(8), and one Co(2) atom to form FeSm3Fe8Co cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(24)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(25)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Co(3)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(16)Sm2Fe8Co2 cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(29)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(2)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(27)Sm3Fe9 cuboctahedra. The Fe(31)-Co(2) bond length is 2.47 Å. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one Sm(1), two equivalent Sm(3), one Fe(12), one Fe(13), one Fe(15), one Fe(21), one Fe(28), one Fe(3), one Fe(30), one Fe(5), and one Fe(9) atom to form distorted CoSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(13)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(29)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(17)Sm2Fe9Co cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Fe(28)Sm3Fe8Co cuboctahedra, corners with two equivalent Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(26)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(15)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(28)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(24)Sm3Fe9 cuboctahedra. In the second Co site, Co(2) is bonded to one Sm(2), two equivalent Sm(4), one Fe(10), one Fe(11), one Fe(14), one Fe(16), one Fe(22), one Fe(29), one Fe(31), one Fe(4), and one Fe(6) atom to form distorted CoSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a cornercorner with one Fe(14)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(17)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a cornercorner with one Fe(26)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(28)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(31)Sm3Fe8Co cuboctahedra, corners with two equivalent Co(2)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(15)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(23)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(27)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(3)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(14)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(31)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(23)Sm3Fe9 cuboctahedra,  a faceface with one Fe(27)Sm3Fe9 cuboctahedra,  a faceface with one Co(3)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(25)Sm3Fe9 cuboctahedra. In the third Co site, Co(3) is bonded to one Sm(1), one Sm(3), one Sm(4), one Fe(11), one Fe(16), one Fe(17), one Fe(2), one Fe(22), one Fe(26), one Fe(30), one Fe(5), and one Fe(7) atom to form CoSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(15)Sm2Fe9Co cuboctahedra,  a cornercorner with one Fe(31)Sm3Fe8Co cuboctahedra,  a cornercorner with one Fe(27)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm3Fe7Co2 cuboctahedra, corners with two equivalent Fe(26)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(29)Sm3Fe8Co cuboctahedra, corners with two equivalent Fe(23)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(13)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(16)Sm2Fe8Co2 cuboctahedra,  an edgeedge with one Fe(14)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(17)Sm2Fe9Co cuboctahedra,  an edgeedge with one Fe(28)Sm3Fe8Co cuboctahedra,  an edgeedge with one Fe(24)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(25)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Co(2)Sm3Fe9 cuboctahedra,  a faceface with one Fe(16)Sm2Fe8Co2 cuboctahedra,  a faceface with one Fe(13)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(17)Sm2Fe9Co cuboctahedra,  a faceface with one Fe(30)Sm3Fe7Co2 cuboctahedra,  a faceface with one Fe(26)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(29)Sm3Fe8Co cuboctahedra,  a faceface with one Fe(24)Sm3Fe9 cuboctahedra,  a faceface with one Fe(25)Sm3Fe9 cuboctahedra,  a faceface with one Co(1)Sm3Fe9 cuboctahedra, and  a faceface with one Co(2)Sm3Fe9 cuboctahedra.