Sm4CrFe33C4 crystallizes in the triclinic P1 space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a distorted bent 120 degrees geometry to one Fe(1), one Fe(17), one Fe(21), one Fe(25), one Fe(27), one Fe(30), two equivalent Fe(7), one C(2), and one C(3) atom. In the second Sm site, Sm(2) is bonded in a distorted bent 120 degrees geometry to one Fe(18), one Fe(2), one Fe(22), one Fe(26), one Fe(28), one Fe(29), one Fe(32), two equivalent Fe(8), one C(1), and one C(4) atom. In the third Sm site, Sm(3) is bonded in a distorted bent 120 degrees geometry to one Fe(17), one Fe(21), one Fe(25), one Fe(28), one Fe(29), one Fe(33), one Fe(7), two equivalent Fe(1), one C(1), and one C(3) atom. In the fourth Sm site, Sm(4) is bonded in a distorted bent 120 degrees geometry to one Cr(1), one Fe(18), one Fe(22), one Fe(26), one Fe(27), one Fe(30), one Fe(8), two equivalent Fe(2), one C(2), and one C(4) atom. Cr(1) is bonded in a 14-coordinate geometry to one Sm(4), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(22), one Fe(24), one Fe(26), one Fe(27), one Fe(3), one Fe(30), one Fe(31), and one Fe(6) atom. There are thirty-three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Sm(1), two equivalent Sm(3), one Fe(11), one Fe(15), one Fe(17), one Fe(21), one Fe(23), one Fe(25), one Fe(28), one Fe(33), and one Fe(9) atom to form distorted FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(29)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one C(1)Sm2Fe4 octahedra, and  a faceface with one C(3)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-69°. In the second Fe site, Fe(2) is bonded to one Sm(2), two equivalent Sm(4), one Cr(1), one Fe(10), one Fe(12), one Fe(16), one Fe(18), one Fe(22), one Fe(24), one Fe(26), and one Fe(27) atom to form distorted FeSm3CrFe8 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(30)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one C(2)Sm2Fe4 octahedra, and  a faceface with one C(4)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-71°. In the third Fe site, Fe(3) is bonded in a single-bond geometry to one Cr(1), one Fe(17), one Fe(27), one Fe(30), one Fe(7), and one C(2) atom. In the fourth Fe site, Fe(4) is bonded in a single-bond geometry to one Fe(18), one Fe(28), one Fe(29), one Fe(33), one Fe(8), and one C(1) atom. In the fifth Fe site, Fe(5) is bonded in a single-bond geometry to one Fe(21), one Fe(25), one Fe(29), one Fe(33), one Fe(7), and one C(3) atom. In the sixth Fe site, Fe(6) is bonded in a single-bond geometry to one Cr(1), one Fe(22), one Fe(26), one Fe(30), one Fe(8), and one C(4) atom. In the seventh Fe site, Fe(7) is bonded to one Sm(3), two equivalent Sm(1), one Fe(13), one Fe(17), one Fe(19), one Fe(21), one Fe(25), one Fe(27), one Fe(3), one Fe(31), and one Fe(5) atom to form distorted FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(30)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one C(2)Sm2Fe4 octahedra, and  a faceface with one C(3)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-69°. In the eighth Fe site, Fe(8) is bonded to one Sm(4), two equivalent Sm(2), one Fe(14), one Fe(18), one Fe(20), one Fe(22), one Fe(26), one Fe(28), one Fe(32), one Fe(4), and one Fe(6) atom to form distorted FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(29)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra, faces with two equivalent Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one C(1)Sm2Fe4 octahedra, and  a faceface with one C(4)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 62-69°. In the ninth Fe site, Fe(9) is bonded in a single-bond geometry to one Fe(1), one Fe(21), one Fe(28), one Fe(29), one Fe(32), and one C(1) atom. In the tenth Fe site, Fe(10) is bonded in a single-bond geometry to one Fe(2), one Fe(22), one Fe(27), one Fe(30), and one C(2) atom. In the eleventh Fe site, Fe(11) is bonded in a single-bond geometry to one Fe(1), one Fe(17), one Fe(25), one Fe(30), and one C(3) atom. In the twelfth Fe site, Fe(12) is bonded in a single-bond geometry to one Fe(18), one Fe(2), one Fe(26), one Fe(29), one Fe(32), and one C(4) atom. In the thirteenth Fe site, Fe(13) is bonded in a single-bond geometry to one Cr(1), one Fe(22), one Fe(27), one Fe(30), one Fe(7), and one C(2) atom. In the fourteenth Fe site, Fe(14) is bonded in a single-bond geometry to one Fe(21), one Fe(28), one Fe(29), one Fe(32), one Fe(33), one Fe(8), and one C(1) atom. In the fifteenth Fe site, Fe(15) is bonded in a single-bond geometry to one Fe(1), one Fe(21), one Fe(25), one Fe(29), one Fe(32), one Fe(33), and one C(3) atom. In the sixteenth Fe site, Fe(16) is bonded in a single-bond geometry to one Cr(1), one Fe(2), one Fe(22), one Fe(26), one Fe(30), and one C(4) atom. In the seventeenth Fe site, Fe(17) is bonded to one Sm(1), one Sm(3), one Cr(1), one Fe(1), one Fe(11), one Fe(19), one Fe(24), one Fe(25), one Fe(27), one Fe(3), one Fe(31), and one Fe(7) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one C(2)Sm2Fe4 octahedra,  an edgeedge with one C(3)Sm2Fe4 octahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3Fe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-29°. In the eighteenth Fe site, Fe(18) is bonded to one Sm(2), one Sm(4), one Fe(12), one Fe(2), one Fe(20), one Fe(23), one Fe(26), one Fe(28), one Fe(32), one Fe(33), one Fe(4), and one Fe(8) atom to form distorted FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  an edgeedge with one C(1)Sm2Fe4 octahedra,  an edgeedge with one C(4)Sm2Fe4 octahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-29°. In the nineteenth Fe site, Fe(19) is bonded in a single-bond geometry to one Cr(1), one Fe(17), one Fe(25), one Fe(30), one Fe(7), and one C(3) atom. In the twentieth Fe site, Fe(20) is bonded in a single-bond geometry to one Fe(18), one Fe(26), one Fe(29), one Fe(32), one Fe(33), one Fe(8), and one C(4) atom. In the twenty-first Fe site, Fe(21) is bonded to one Sm(1), one Sm(3), one Fe(1), one Fe(14), one Fe(15), one Fe(25), one Fe(28), one Fe(32), one Fe(33), one Fe(5), one Fe(7), and one Fe(9) atom to form distorted FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one C(1)Sm2Fe4 octahedra,  an edgeedge with one C(3)Sm2Fe4 octahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra, and faces with two equivalent Fe(1)Sm3Fe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-29°. In the twenty-second Fe site, Fe(22) is bonded to one Sm(2), one Sm(4), one Cr(1), one Fe(10), one Fe(13), one Fe(16), one Fe(2), one Fe(26), one Fe(27), one Fe(31), one Fe(6), and one Fe(8) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one C(2)Sm2Fe4 octahedra,  an edgeedge with one C(4)Sm2Fe4 octahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, and faces with two equivalent Fe(2)Sm3CrFe8 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-28°. In the twenty-third Fe site, Fe(23) is bonded in a single-bond geometry to one Fe(1), one Fe(18), one Fe(28), one Fe(29), one Fe(32), one Fe(33), and one C(1) atom. In the twenty-fourth Fe site, Fe(24) is bonded in a single-bond geometry to one Cr(1), one Fe(17), one Fe(2), one Fe(27), one Fe(30), and one C(2) atom. In the twenty-fifth Fe site, Fe(25) is bonded to one Sm(1), one Sm(3), one Fe(1), one Fe(11), one Fe(15), one Fe(17), one Fe(19), one Fe(21), one Fe(31), one Fe(33), one Fe(5), and one Fe(7) atom to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, and faces with two equivalent C(3)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles are 45°. In the twenty-sixth Fe site, Fe(26) is bonded to one Sm(2), one Sm(4), one Cr(1), one Fe(12), one Fe(16), one Fe(18), one Fe(2), one Fe(20), one Fe(22), one Fe(32), one Fe(6), and one Fe(8) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent C(4)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. In the twenty-seventh Fe site, Fe(27) is bonded to one Sm(1), one Sm(4), one Cr(1), one Fe(10), one Fe(13), one Fe(17), one Fe(2), one Fe(22), one Fe(24), one Fe(3), one Fe(31), and one Fe(7) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, and faces with two equivalent C(2)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. In the twenty-eighth Fe site, Fe(28) is bonded to one Sm(2), one Sm(3), one Fe(1), one Fe(14), one Fe(18), one Fe(21), one Fe(23), one Fe(32), one Fe(33), one Fe(4), one Fe(8), and one Fe(9) atom to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra, and faces with two equivalent C(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles are 45°. In the twenty-ninth Fe site, Fe(29) is bonded to one Sm(2), one Sm(3), one Fe(12), one Fe(14), one Fe(15), one Fe(20), one Fe(23), one Fe(32), one Fe(33), one Fe(4), one Fe(5), and one Fe(9) atom to form distorted FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(28)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3CrFe8 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(18)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(21)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one C(3)Sm2Fe4 octahedra,  a faceface with one C(4)Sm2Fe4 octahedra, and faces with two equivalent C(1)Sm2Fe4 octahedra. In the thirtieth Fe site, Fe(30) is bonded to one Sm(1), one Sm(4), one Cr(1), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(19), one Fe(24), one Fe(3), one Fe(31), and one Fe(6) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(27)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(17)Sm2CrFe9 cuboctahedra, faces with two equivalent Fe(22)Sm2CrFe9 cuboctahedra, faces with two equivalent Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one C(3)Sm2Fe4 octahedra,  a faceface with one C(4)Sm2Fe4 octahedra, and faces with two equivalent C(2)Sm2Fe4 octahedra. In the thirty-first Fe site, Fe(31) is bonded in a distorted single-bond geometry to one Cr(1), one Fe(17), one Fe(22), one Fe(25), one Fe(27), one Fe(30), and one Fe(7) atom. In the thirty-second Fe site, Fe(32) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(12), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(26), one Fe(28), one Fe(29), one Fe(33), one Fe(8), and one Fe(9) atom. In the thirty-third Fe site, Fe(33) is bonded in a 14-coordinate geometry to one Sm(3), one Fe(1), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(25), one Fe(28), one Fe(29), one Fe(32), one Fe(4), and one Fe(5) atom. There are four inequivalent C sites. In the first C site, C(1) is bonded to one Sm(2), one Sm(3), one Fe(14), one Fe(23), one Fe(4), and one Fe(9) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(28)Sm2Fe10 cuboctahedra, and faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 63°. In the second C site, C(2) is bonded to one Sm(1), one Sm(4), one Fe(10), one Fe(13), one Fe(24), and one Fe(3) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(27)Sm2CrFe9 cuboctahedra, and faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 63-64°. In the third C site, C(3) is bonded to one Sm(1), one Sm(3), one Fe(11), one Fe(15), one Fe(19), and one Fe(5) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(17)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(21)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(25)Sm2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 63°. In the fourth C site, C(4) is bonded to one Sm(2), one Sm(4), one Fe(12), one Fe(16), one Fe(20), and one Fe(6) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(22)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3CrFe8 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(26)Sm2CrFe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 63-64°.
Sm4CrFe33C4 crystallizes in the triclinic P1 space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a distorted bent 120 degrees geometry to one Fe(1), one Fe(17), one Fe(21), one Fe(25), one Fe(27), one Fe(30), two equivalent Fe(7), one C(2), and one C(3) atom. The Sm(1)-Fe(1) bond length is 3.06 Å. The Sm(1)-Fe(17) bond length is 3.08 Å. The Sm(1)-Fe(21) bond length is 3.08 Å. The Sm(1)-Fe(25) bond length is 3.30 Å. The Sm(1)-Fe(27) bond length is 3.33 Å. The Sm(1)-Fe(30) bond length is 3.40 Å. There is one shorter (3.12 Å) and one longer (3.38 Å) Sm(1)-Fe(7) bond length. The Sm(1)-C(2) bond length is 2.54 Å. The Sm(1)-C(3) bond length is 2.54 Å. In the second Sm site, Sm(2) is bonded in a distorted bent 120 degrees geometry to one Fe(18), one Fe(2), one Fe(22), one Fe(26), one Fe(28), one Fe(29), one Fe(32), two equivalent Fe(8), one C(1), and one C(4) atom. The Sm(2)-Fe(18) bond length is 3.06 Å. The Sm(2)-Fe(2) bond length is 3.05 Å. The Sm(2)-Fe(22) bond length is 3.08 Å. The Sm(2)-Fe(26) bond length is 3.31 Å. The Sm(2)-Fe(28) bond length is 3.30 Å. The Sm(2)-Fe(29) bond length is 3.39 Å. The Sm(2)-Fe(32) bond length is 3.09 Å. There is one shorter (3.13 Å) and one longer (3.38 Å) Sm(2)-Fe(8) bond length. The Sm(2)-C(1) bond length is 2.55 Å. The Sm(2)-C(4) bond length is 2.54 Å. In the third Sm site, Sm(3) is bonded in a distorted bent 120 degrees geometry to one Fe(17), one Fe(21), one Fe(25), one Fe(28), one Fe(29), one Fe(33), one Fe(7), two equivalent Fe(1), one C(1), and one C(3) atom. The Sm(3)-Fe(17) bond length is 3.07 Å. The Sm(3)-Fe(21) bond length is 3.07 Å. The Sm(3)-Fe(25) bond length is 3.31 Å. The Sm(3)-Fe(28) bond length is 3.31 Å. The Sm(3)-Fe(29) bond length is 3.40 Å. The Sm(3)-Fe(33) bond length is 3.09 Å. The Sm(3)-Fe(7) bond length is 3.05 Å. There is one shorter (3.13 Å) and one longer (3.38 Å) Sm(3)-Fe(1) bond length. The Sm(3)-C(1) bond length is 2.55 Å. The Sm(3)-C(3) bond length is 2.54 Å. In the fourth Sm site, Sm(4) is bonded in a distorted bent 120 degrees geometry to one Cr(1), one Fe(18), one Fe(22), one Fe(26), one Fe(27), one Fe(30), one Fe(8), two equivalent Fe(2), one C(2), and one C(4) atom. The Sm(4)-Cr(1) bond length is 3.20 Å. The Sm(4)-Fe(18) bond length is 3.07 Å. The Sm(4)-Fe(22) bond length is 3.06 Å. The Sm(4)-Fe(26) bond length is 3.35 Å. The Sm(4)-Fe(27) bond length is 3.35 Å. The Sm(4)-Fe(30) bond length is 3.43 Å. The Sm(4)-Fe(8) bond length is 3.01 Å. There is one shorter (3.18 Å) and one longer (3.33 Å) Sm(4)-Fe(2) bond length. The Sm(4)-C(2) bond length is 2.54 Å. The Sm(4)-C(4) bond length is 2.55 Å. Cr(1) is bonded in a 14-coordinate geometry to one Sm(4), one Fe(13), one Fe(16), one Fe(17), one Fe(19), one Fe(2), one Fe(22), one Fe(24), one Fe(26), one Fe(27), one Fe(3), one Fe(30), one Fe(31), and one Fe(6) atom. The Cr(1)-Fe(13) bond length is 2.75 Å. The Cr(1)-Fe(16) bond length is 2.74 Å. The Cr(1)-Fe(17) bond length is 2.71 Å. The Cr(1)-Fe(19) bond length is 2.75 Å. The Cr(1)-Fe(2) bond length is 2.67 Å. The Cr(1)-Fe(22) bond length is 2.71 Å. The Cr(1)-Fe(24) bond length is 2.75 Å. The Cr(1)-Fe(26) bond length is 2.64 Å. The Cr(1)-Fe(27) bond length is 2.64 Å. The Cr(1)-Fe(3) bond length is 2.66 Å. The Cr(1)-Fe(30) bond length is 2.65 Å. The Cr(1)-Fe(31) bond length is 2.31 Å. The Cr(1)-Fe(6) bond length is 2.67 Å. There are thirty-three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Sm(1), two equivalent Sm(3), one Fe(11), one Fe(15), one Fe(17), one Fe(21), one Fe(23), one Fe(25), one Fe(28), one Fe(33), and one Fe(9) atom to form distorted FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(29)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one C(1)Sm2Fe4 octahedra, and  a faceface with one C(3)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-69°. The Fe(1)-Fe(11) bond length is 2.58 Å. The Fe(1)-Fe(15) bond length is 2.55 Å. The Fe(1)-Fe(17) bond length is 2.69 Å. The Fe(1)-Fe(21) bond length is 2.68 Å. The Fe(1)-Fe(23) bond length is 2.56 Å. The Fe(1)-Fe(25) bond length is 2.47 Å. The Fe(1)-Fe(28) bond length is 2.48 Å. The Fe(1)-Fe(33) bond length is 2.65 Å. The Fe(1)-Fe(9) bond length is 2.57 Å. In the second Fe site, Fe(2) is bonded to one Sm(2), two equivalent Sm(4), one Cr(1), one Fe(10), one Fe(12), one Fe(16), one Fe(18), one Fe(22), one Fe(24), one Fe(26), and one Fe(27) atom to form distorted FeSm3CrFe8 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(30)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one C(2)Sm2Fe4 octahedra, and  a faceface with one C(4)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-71°. The Fe(2)-Fe(10) bond length is 2.57 Å. The Fe(2)-Fe(12) bond length is 2.57 Å. The Fe(2)-Fe(16) bond length is 2.58 Å. The Fe(2)-Fe(18) bond length is 2.68 Å. The Fe(2)-Fe(22) bond length is 2.66 Å. The Fe(2)-Fe(24) bond length is 2.58 Å. The Fe(2)-Fe(26) bond length is 2.47 Å. The Fe(2)-Fe(27) bond length is 2.46 Å. In the third Fe site, Fe(3) is bonded in a single-bond geometry to one Cr(1), one Fe(17), one Fe(27), one Fe(30), one Fe(7), and one C(2) atom. The Fe(3)-Fe(17) bond length is 2.56 Å. The Fe(3)-Fe(27) bond length is 2.46 Å. The Fe(3)-Fe(30) bond length is 2.48 Å. The Fe(3)-Fe(7) bond length is 2.56 Å. The Fe(3)-C(2) bond length is 1.92 Å. In the fourth Fe site, Fe(4) is bonded in a single-bond geometry to one Fe(18), one Fe(28), one Fe(29), one Fe(33), one Fe(8), and one C(1) atom. The Fe(4)-Fe(18) bond length is 2.57 Å. The Fe(4)-Fe(28) bond length is 2.46 Å. The Fe(4)-Fe(29) bond length is 2.48 Å. The Fe(4)-Fe(33) bond length is 2.65 Å. The Fe(4)-Fe(8) bond length is 2.58 Å. The Fe(4)-C(1) bond length is 1.91 Å. In the fifth Fe site, Fe(5) is bonded in a single-bond geometry to one Fe(21), one Fe(25), one Fe(29), one Fe(33), one Fe(7), and one C(3) atom. The Fe(5)-Fe(21) bond length is 2.56 Å. The Fe(5)-Fe(25) bond length is 2.47 Å. The Fe(5)-Fe(29) bond length is 2.49 Å. The Fe(5)-Fe(33) bond length is 2.65 Å. The Fe(5)-Fe(7) bond length is 2.59 Å. The Fe(5)-C(3) bond length is 1.92 Å. In the sixth Fe site, Fe(6) is bonded in a single-bond geometry to one Cr(1), one Fe(22), one Fe(26), one Fe(30), one Fe(8), and one C(4) atom. The Fe(6)-Fe(22) bond length is 2.56 Å. The Fe(6)-Fe(26) bond length is 2.46 Å. The Fe(6)-Fe(30) bond length is 2.48 Å. The Fe(6)-Fe(8) bond length is 2.55 Å. The Fe(6)-C(4) bond length is 1.92 Å. In the seventh Fe site, Fe(7) is bonded to one Sm(3), two equivalent Sm(1), one Fe(13), one Fe(17), one Fe(19), one Fe(21), one Fe(25), one Fe(27), one Fe(3), one Fe(31), and one Fe(5) atom to form distorted FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(30)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one C(2)Sm2Fe4 octahedra, and  a faceface with one C(3)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-69°. The Fe(7)-Fe(13) bond length is 2.55 Å. The Fe(7)-Fe(17) bond length is 2.66 Å. The Fe(7)-Fe(19) bond length is 2.55 Å. The Fe(7)-Fe(21) bond length is 2.69 Å. The Fe(7)-Fe(25) bond length is 2.48 Å. The Fe(7)-Fe(27) bond length is 2.47 Å. The Fe(7)-Fe(31) bond length is 2.66 Å. In the eighth Fe site, Fe(8) is bonded to one Sm(4), two equivalent Sm(2), one Fe(14), one Fe(18), one Fe(20), one Fe(22), one Fe(26), one Fe(28), one Fe(32), one Fe(4), and one Fe(6) atom to form distorted FeSm3Fe9 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(29)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra, faces with two equivalent Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one C(1)Sm2Fe4 octahedra, and  a faceface with one C(4)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 62-69°. The Fe(8)-Fe(14) bond length is 2.57 Å. The Fe(8)-Fe(18) bond length is 2.67 Å. The Fe(8)-Fe(20) bond length is 2.56 Å. The Fe(8)-Fe(22) bond length is 2.68 Å. The Fe(8)-Fe(26) bond length is 2.48 Å. The Fe(8)-Fe(28) bond length is 2.48 Å. The Fe(8)-Fe(32) bond length is 2.66 Å. In the ninth Fe site, Fe(9) is bonded in a single-bond geometry to one Fe(1), one Fe(21), one Fe(28), one Fe(29), one Fe(32), and one C(1) atom. The Fe(9)-Fe(21) bond length is 2.57 Å. The Fe(9)-Fe(28) bond length is 2.47 Å. The Fe(9)-Fe(29) bond length is 2.48 Å. The Fe(9)-Fe(32) bond length is 2.64 Å. The Fe(9)-C(1) bond length is 1.91 Å. In the tenth Fe site, Fe(10) is bonded in a single-bond geometry to one Fe(2), one Fe(22), one Fe(27), one Fe(30), and one C(2) atom. The Fe(10)-Fe(22) bond length is 2.56 Å. The Fe(10)-Fe(27) bond length is 2.45 Å. The Fe(10)-Fe(30) bond length is 2.49 Å. The Fe(10)-C(2) bond length is 1.92 Å. In the eleventh Fe site, Fe(11) is bonded in a single-bond geometry to one Fe(1), one Fe(17), one Fe(25), one Fe(30), and one C(3) atom. The Fe(11)-Fe(17) bond length is 2.56 Å. The Fe(11)-Fe(25) bond length is 2.46 Å. The Fe(11)-Fe(30) bond length is 2.49 Å. The Fe(11)-C(3) bond length is 1.91 Å. In the twelfth Fe site, Fe(12) is bonded in a single-bond geometry to one Fe(18), one Fe(2), one Fe(26), one Fe(29), one Fe(32), and one C(4) atom. The Fe(12)-Fe(18) bond length is 2.56 Å. The Fe(12)-Fe(26) bond length is 2.46 Å. The Fe(12)-Fe(29) bond length is 2.49 Å. The Fe(12)-Fe(32) bond length is 2.65 Å. The Fe(12)-C(4) bond length is 1.92 Å. In the thirteenth Fe site, Fe(13) is bonded in a single-bond geometry to one Cr(1), one Fe(22), one Fe(27), one Fe(30), one Fe(7), and one C(2) atom. The Fe(13)-Fe(22) bond length is 2.46 Å. The Fe(13)-Fe(27) bond length is 2.43 Å. The Fe(13)-Fe(30) bond length is 2.44 Å. The Fe(13)-C(2) bond length is 1.85 Å. In the fourteenth Fe site, Fe(14) is bonded in a single-bond geometry to one Fe(21), one Fe(28), one Fe(29), one Fe(32), one Fe(33), one Fe(8), and one C(1) atom. The Fe(14)-Fe(21) bond length is 2.47 Å. The Fe(14)-Fe(28) bond length is 2.44 Å. The Fe(14)-Fe(29) bond length is 2.43 Å. The Fe(14)-Fe(32) bond length is 2.74 Å. The Fe(14)-Fe(33) bond length is 2.74 Å. The Fe(14)-C(1) bond length is 1.86 Å. In the fifteenth Fe site, Fe(15) is bonded in a single-bond geometry to one Fe(1), one Fe(21), one Fe(25), one Fe(29), one Fe(32), one Fe(33), and one C(3) atom. The Fe(15)-Fe(21) bond length is 2.47 Å. The Fe(15)-Fe(25) bond length is 2.45 Å. The Fe(15)-Fe(29) bond length is 2.45 Å. The Fe(15)-Fe(32) bond length is 2.75 Å. The Fe(15)-Fe(33) bond length is 2.75 Å. The Fe(15)-C(3) bond length is 1.86 Å. In the sixteenth Fe site, Fe(16) is bonded in a single-bond geometry to one Cr(1), one Fe(2), one Fe(22), one Fe(26), one Fe(30), and one C(4) atom. The Fe(16)-Fe(22) bond length is 2.49 Å. The Fe(16)-Fe(26) bond length is 2.46 Å. The Fe(16)-Fe(30) bond length is 2.43 Å. The Fe(16)-C(4) bond length is 1.86 Å. In the seventeenth Fe site, Fe(17) is bonded to one Sm(1), one Sm(3), one Cr(1), one Fe(1), one Fe(11), one Fe(19), one Fe(24), one Fe(25), one Fe(27), one Fe(3), one Fe(31), and one Fe(7) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one C(2)Sm2Fe4 octahedra,  an edgeedge with one C(3)Sm2Fe4 octahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, and faces with two equivalent Fe(7)Sm3Fe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-29°. The Fe(17)-Fe(19) bond length is 2.47 Å. The Fe(17)-Fe(24) bond length is 2.48 Å. The Fe(17)-Fe(25) bond length is 2.44 Å. The Fe(17)-Fe(27) bond length is 2.44 Å. The Fe(17)-Fe(31) bond length is 2.68 Å. In the eighteenth Fe site, Fe(18) is bonded to one Sm(2), one Sm(4), one Fe(12), one Fe(2), one Fe(20), one Fe(23), one Fe(26), one Fe(28), one Fe(32), one Fe(33), one Fe(4), and one Fe(8) atom to form distorted FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  an edgeedge with one C(1)Sm2Fe4 octahedra,  an edgeedge with one C(4)Sm2Fe4 octahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra, and faces with two equivalent Fe(8)Sm3Fe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-29°. The Fe(18)-Fe(20) bond length is 2.47 Å. The Fe(18)-Fe(23) bond length is 2.48 Å. The Fe(18)-Fe(26) bond length is 2.44 Å. The Fe(18)-Fe(28) bond length is 2.43 Å. The Fe(18)-Fe(32) bond length is 2.73 Å. The Fe(18)-Fe(33) bond length is 2.74 Å. In the nineteenth Fe site, Fe(19) is bonded in a single-bond geometry to one Cr(1), one Fe(17), one Fe(25), one Fe(30), one Fe(7), and one C(3) atom. The Fe(19)-Fe(25) bond length is 2.43 Å. The Fe(19)-Fe(30) bond length is 2.45 Å. The Fe(19)-C(3) bond length is 1.85 Å. In the twentieth Fe site, Fe(20) is bonded in a single-bond geometry to one Fe(18), one Fe(26), one Fe(29), one Fe(32), one Fe(33), one Fe(8), and one C(4) atom. The Fe(20)-Fe(26) bond length is 2.45 Å. The Fe(20)-Fe(29) bond length is 2.44 Å. The Fe(20)-Fe(32) bond length is 2.75 Å. The Fe(20)-Fe(33) bond length is 2.75 Å. The Fe(20)-C(4) bond length is 1.86 Å. In the twenty-first Fe site, Fe(21) is bonded to one Sm(1), one Sm(3), one Fe(1), one Fe(14), one Fe(15), one Fe(25), one Fe(28), one Fe(32), one Fe(33), one Fe(5), one Fe(7), and one Fe(9) atom to form distorted FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(3)Sm2Fe4 octahedra,  an edgeedge with one Fe(27)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(25)Sm2Fe10 cuboctahedra,  an edgeedge with one C(1)Sm2Fe4 octahedra,  an edgeedge with one C(3)Sm2Fe4 octahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra, and faces with two equivalent Fe(1)Sm3Fe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 21-29°. The Fe(21)-Fe(25) bond length is 2.43 Å. The Fe(21)-Fe(28) bond length is 2.44 Å. The Fe(21)-Fe(32) bond length is 2.72 Å. The Fe(21)-Fe(33) bond length is 2.71 Å. In the twenty-second Fe site, Fe(22) is bonded to one Sm(2), one Sm(4), one Cr(1), one Fe(10), one Fe(13), one Fe(16), one Fe(2), one Fe(26), one Fe(27), one Fe(31), one Fe(6), and one Fe(8) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra, corners with two equivalent C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(26)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(28)Sm2Fe10 cuboctahedra,  an edgeedge with one C(2)Sm2Fe4 octahedra,  an edgeedge with one C(4)Sm2Fe4 octahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, and faces with two equivalent Fe(2)Sm3CrFe8 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-28°. The Fe(22)-Fe(26) bond length is 2.44 Å. The Fe(22)-Fe(27) bond length is 2.43 Å. The Fe(22)-Fe(31) bond length is 2.72 Å. In the twenty-third Fe site, Fe(23) is bonded in a single-bond geometry to one Fe(1), one Fe(18), one Fe(28), one Fe(29), one Fe(32), one Fe(33), and one C(1) atom. The Fe(23)-Fe(28) bond length is 2.44 Å. The Fe(23)-Fe(29) bond length is 2.43 Å. The Fe(23)-Fe(32) bond length is 2.74 Å. The Fe(23)-Fe(33) bond length is 2.75 Å. The Fe(23)-C(1) bond length is 1.86 Å. In the twenty-fourth Fe site, Fe(24) is bonded in a single-bond geometry to one Cr(1), one Fe(17), one Fe(2), one Fe(27), one Fe(30), and one C(2) atom. The Fe(24)-Fe(27) bond length is 2.45 Å. The Fe(24)-Fe(30) bond length is 2.43 Å. The Fe(24)-C(2) bond length is 1.85 Å. In the twenty-fifth Fe site, Fe(25) is bonded to one Sm(1), one Sm(3), one Fe(1), one Fe(11), one Fe(15), one Fe(17), one Fe(19), one Fe(21), one Fe(31), one Fe(33), one Fe(5), and one Fe(7) atom to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, and faces with two equivalent C(3)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles are 45°. The Fe(25)-Fe(31) bond length is 2.65 Å. The Fe(25)-Fe(33) bond length is 2.66 Å. In the twenty-sixth Fe site, Fe(26) is bonded to one Sm(2), one Sm(4), one Cr(1), one Fe(12), one Fe(16), one Fe(18), one Fe(2), one Fe(20), one Fe(22), one Fe(32), one Fe(6), and one Fe(8) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent C(4)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. The Fe(26)-Fe(32) bond length is 2.67 Å. In the twenty-seventh Fe site, Fe(27) is bonded to one Sm(1), one Sm(4), one Cr(1), one Fe(10), one Fe(13), one Fe(17), one Fe(2), one Fe(22), one Fe(24), one Fe(3), one Fe(31), and one Fe(7) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(30)Sm2CrFe9 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(17)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra, and faces with two equivalent C(2)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 45-48°. The Fe(27)-Fe(31) bond length is 2.68 Å. In the twenty-eighth Fe site, Fe(28) is bonded to one Sm(2), one Sm(3), one Fe(1), one Fe(14), one Fe(18), one Fe(21), one Fe(23), one Fe(32), one Fe(33), one Fe(4), one Fe(8), and one Fe(9) atom to form FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(29)Sm2Fe10 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra, and faces with two equivalent C(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles are 45°. The Fe(28)-Fe(32) bond length is 2.64 Å. The Fe(28)-Fe(33) bond length is 2.65 Å. In the twenty-ninth Fe site, Fe(29) is bonded to one Sm(2), one Sm(3), one Fe(12), one Fe(14), one Fe(15), one Fe(20), one Fe(23), one Fe(32), one Fe(33), one Fe(4), one Fe(5), and one Fe(9) atom to form distorted FeSm2Fe10 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(28)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3CrFe8 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(1)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(8)Sm3Fe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(18)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(21)Sm2Fe10 cuboctahedra, faces with two equivalent Fe(28)Sm2Fe10 cuboctahedra,  a faceface with one C(3)Sm2Fe4 octahedra,  a faceface with one C(4)Sm2Fe4 octahedra, and faces with two equivalent C(1)Sm2Fe4 octahedra. The Fe(29)-Fe(32) bond length is 2.65 Å. The Fe(29)-Fe(33) bond length is 2.65 Å. In the thirtieth Fe site, Fe(30) is bonded to one Sm(1), one Sm(4), one Cr(1), one Fe(10), one Fe(11), one Fe(13), one Fe(16), one Fe(19), one Fe(24), one Fe(3), one Fe(31), and one Fe(6) atom to form distorted FeSm2CrFe9 cuboctahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(27)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(2)Sm3CrFe8 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(26)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(25)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(17)Sm2CrFe9 cuboctahedra, faces with two equivalent Fe(22)Sm2CrFe9 cuboctahedra, faces with two equivalent Fe(27)Sm2CrFe9 cuboctahedra,  a faceface with one C(3)Sm2Fe4 octahedra,  a faceface with one C(4)Sm2Fe4 octahedra, and faces with two equivalent C(2)Sm2Fe4 octahedra. The Fe(30)-Fe(31) bond length is 2.69 Å. In the thirty-first Fe site, Fe(31) is bonded in a distorted single-bond geometry to one Cr(1), one Fe(17), one Fe(22), one Fe(25), one Fe(27), one Fe(30), and one Fe(7) atom. In the thirty-second Fe site, Fe(32) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(12), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(26), one Fe(28), one Fe(29), one Fe(33), one Fe(8), and one Fe(9) atom. The Fe(32)-Fe(33) bond length is 2.38 Å. In the thirty-third Fe site, Fe(33) is bonded in a 14-coordinate geometry to one Sm(3), one Fe(1), one Fe(14), one Fe(15), one Fe(18), one Fe(20), one Fe(21), one Fe(23), one Fe(25), one Fe(28), one Fe(29), one Fe(32), one Fe(4), and one Fe(5) atom. There are four inequivalent C sites. In the first C site, C(1) is bonded to one Sm(2), one Sm(3), one Fe(14), one Fe(23), one Fe(4), and one Fe(9) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(28)Sm2Fe10 cuboctahedra, and faces with two equivalent Fe(29)Sm2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 63°. In the second C site, C(2) is bonded to one Sm(1), one Sm(4), one Fe(10), one Fe(13), one Fe(24), and one Fe(3) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(17)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(22)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(26)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(18)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(21)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(25)Sm2Fe10 cuboctahedra,  a cornercorner with one Fe(2)Sm3CrFe8 cuboctahedra,  a cornercorner with one Fe(1)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(3)Sm2Fe4 octahedra,  a cornercorner with one C(4)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(27)Sm2CrFe9 cuboctahedra, and faces with two equivalent Fe(30)Sm2CrFe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 63-64°. In the third C site, C(3) is bonded to one Sm(1), one Sm(3), one Fe(11), one Fe(15), one Fe(19), and one Fe(5) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(17)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(21)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(1)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(17)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(21)Sm2Fe10 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(1)Sm3Fe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(25)Sm2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 63°. In the fourth C site, C(4) is bonded to one Sm(2), one Sm(4), one Fe(12), one Fe(16), one Fe(20), and one Fe(6) atom to form CSm2Fe4 octahedra that share  a cornercorner with one Fe(27)Sm2CrFe9 cuboctahedra,  a cornercorner with one Fe(28)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(22)Sm2CrFe9 cuboctahedra, corners with two equivalent Fe(18)Sm2Fe10 cuboctahedra, corners with two equivalent Fe(2)Sm3CrFe8 cuboctahedra, corners with two equivalent Fe(8)Sm3Fe9 cuboctahedra,  a cornercorner with one C(1)Sm2Fe4 octahedra,  a cornercorner with one C(2)Sm2Fe4 octahedra,  an edgeedge with one Fe(22)Sm2CrFe9 cuboctahedra,  an edgeedge with one Fe(18)Sm2Fe10 cuboctahedra,  a faceface with one Fe(30)Sm2CrFe9 cuboctahedra,  a faceface with one Fe(29)Sm2Fe10 cuboctahedra,  a faceface with one Fe(2)Sm3CrFe8 cuboctahedra,  a faceface with one Fe(8)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(26)Sm2CrFe9 cuboctahedra. The corner-sharing octahedral tilt angles range from 63-64°.