Sm2La6Cr5(FeO8)3 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. Sm(1) is bonded to one O(10), one O(13), one O(14), one O(17), one O(18), one O(19), one O(20), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form SmO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. There are three inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(10), one O(13), one O(14), one O(17), one O(18), one O(19), one O(2), one O(20), one O(3), one O(4), and one O(9) atom to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. In the second La site, La(2) is bonded to one O(1), one O(11), one O(12), one O(15), one O(16), one O(17), one O(18), one O(19), one O(2), one O(20), one O(3), and one O(4) atom to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. In the third La site, La(3) is bonded to one O(11), one O(12), one O(15), one O(16), one O(17), one O(18), one O(19), one O(20), one O(5), one O(6), one O(7), and one O(8) atom to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. There are five inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(3), one O(7), one O(9), and two equivalent O(18) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second Cr site, Cr(2) is bonded to one O(10), one O(12), one O(4), one O(8), and two equivalent O(18) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third Cr site, Cr(3) is bonded to one O(14), one O(16), one O(2), one O(6), and two equivalent O(19) atoms to form CrO6 octahedra that share corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth Cr site, Cr(4) is bonded to one O(13), one O(15), one O(3), one O(7), and two equivalent O(20) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fifth Cr site, Cr(5) is bonded to one O(14), one O(16), one O(4), one O(8), and two equivalent O(20) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(11), one O(5), one O(9), and two equivalent O(17) atoms to form FeO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(2), one O(6), and two equivalent O(17) atoms to form FeO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third Fe site, Fe(3) is bonded to one O(1), one O(13), one O(15), one O(5), and two equivalent O(19) atoms to form FeO6 octahedra that share corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Fe(1), and one Fe(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Cr(3), and one Fe(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Cr(1), and one Cr(4) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Cr(2), and one Cr(5) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Fe(1), and one Fe(3) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Cr(3), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Cr(1), and one Cr(4) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Cr(2), and one Cr(5) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(1), and one Fe(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(2), and one Fe(2) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(1), and one Fe(1) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(2), and one Fe(2) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(4), and one Fe(3) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(3), and one Cr(5) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(4), and one Fe(3) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(3), and one Cr(5) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Fe(1), and one Fe(2) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Cr(1), and one Cr(2) atom. In the nineteenth O site, O(19) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Cr(3), and one Fe(3) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Cr(4), and one Cr(5) atom.
Sm2La6Cr5(FeO8)3 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. Sm(1) is bonded to one O(10), one O(13), one O(14), one O(17), one O(18), one O(19), one O(20), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form SmO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. The Sm(1)-O(10) bond length is 2.76 Å. The Sm(1)-O(13) bond length is 2.76 Å. The Sm(1)-O(14) bond length is 2.75 Å. The Sm(1)-O(17) bond length is 2.76 Å. The Sm(1)-O(18) bond length is 2.75 Å. The Sm(1)-O(19) bond length is 2.76 Å. The Sm(1)-O(20) bond length is 2.75 Å. The Sm(1)-O(5) bond length is 2.77 Å. The Sm(1)-O(6) bond length is 2.76 Å. The Sm(1)-O(7) bond length is 2.75 Å. The Sm(1)-O(8) bond length is 2.75 Å. The Sm(1)-O(9) bond length is 2.76 Å. There are three inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(10), one O(13), one O(14), one O(17), one O(18), one O(19), one O(2), one O(20), one O(3), one O(4), and one O(9) atom to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. The La(1)-O(1) bond length is 2.78 Å. The La(1)-O(10) bond length is 2.79 Å. The La(1)-O(13) bond length is 2.79 Å. The La(1)-O(14) bond length is 2.79 Å. The La(1)-O(17) bond length is 2.78 Å. The La(1)-O(18) bond length is 2.77 Å. The La(1)-O(19) bond length is 2.78 Å. The La(1)-O(2) bond length is 2.77 Å. The La(1)-O(20) bond length is 2.77 Å. The La(1)-O(3) bond length is 2.77 Å. The La(1)-O(4) bond length is 2.77 Å. The La(1)-O(9) bond length is 2.79 Å. In the second La site, La(2) is bonded to one O(1), one O(11), one O(12), one O(15), one O(16), one O(17), one O(18), one O(19), one O(2), one O(20), one O(3), and one O(4) atom to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. The La(2)-O(1) bond length is 2.78 Å. The La(2)-O(11) bond length is 2.78 Å. The La(2)-O(12) bond length is 2.77 Å. The La(2)-O(15) bond length is 2.77 Å. The La(2)-O(16) bond length is 2.77 Å. The La(2)-O(17) bond length is 2.79 Å. The La(2)-O(18) bond length is 2.79 Å. The La(2)-O(19) bond length is 2.79 Å. The La(2)-O(2) bond length is 2.78 Å. The La(2)-O(20) bond length is 2.78 Å. The La(2)-O(3) bond length is 2.77 Å. The La(2)-O(4) bond length is 2.77 Å. In the third La site, La(3) is bonded to one O(11), one O(12), one O(15), one O(16), one O(17), one O(18), one O(19), one O(20), one O(5), one O(6), one O(7), and one O(8) atom to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Cr(2)O6 octahedra,  a faceface with one Cr(3)O6 octahedra,  a faceface with one Cr(4)O6 octahedra,  a faceface with one Cr(5)O6 octahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. The La(3)-O(11) bond length is 2.77 Å. The La(3)-O(12) bond length is 2.77 Å. The La(3)-O(15) bond length is 2.77 Å. The La(3)-O(16) bond length is 2.77 Å. The La(3)-O(17) bond length is 2.78 Å. The La(3)-O(18) bond length is 2.77 Å. The La(3)-O(19) bond length is 2.78 Å. The La(3)-O(20) bond length is 2.77 Å. The La(3)-O(5) bond length is 2.79 Å. The La(3)-O(6) bond length is 2.79 Å. The La(3)-O(7) bond length is 2.79 Å. The La(3)-O(8) bond length is 2.78 Å. There are five inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(3), one O(7), one O(9), and two equivalent O(18) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Cr(1)-O(11) bond length is 1.96 Å. The Cr(1)-O(3) bond length is 1.96 Å. The Cr(1)-O(7) bond length is 1.96 Å. The Cr(1)-O(9) bond length is 1.95 Å. Both Cr(1)-O(18) bond lengths are 1.96 Å. In the second Cr site, Cr(2) is bonded to one O(10), one O(12), one O(4), one O(8), and two equivalent O(18) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Cr(2)-O(10) bond length is 1.95 Å. The Cr(2)-O(12) bond length is 1.96 Å. The Cr(2)-O(4) bond length is 1.97 Å. The Cr(2)-O(8) bond length is 1.96 Å. Both Cr(2)-O(18) bond lengths are 1.96 Å. In the third Cr site, Cr(3) is bonded to one O(14), one O(16), one O(2), one O(6), and two equivalent O(19) atoms to form CrO6 octahedra that share corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Cr(3)-O(14) bond length is 1.96 Å. The Cr(3)-O(16) bond length is 1.97 Å. The Cr(3)-O(2) bond length is 1.96 Å. The Cr(3)-O(6) bond length is 1.95 Å. Both Cr(3)-O(19) bond lengths are 1.96 Å. In the fourth Cr site, Cr(4) is bonded to one O(13), one O(15), one O(3), one O(7), and two equivalent O(20) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Cr(4)-O(13) bond length is 1.95 Å. The Cr(4)-O(15) bond length is 1.96 Å. The Cr(4)-O(3) bond length is 1.96 Å. The Cr(4)-O(7) bond length is 1.96 Å. Both Cr(4)-O(20) bond lengths are 1.96 Å. In the fifth Cr site, Cr(5) is bonded to one O(14), one O(16), one O(4), one O(8), and two equivalent O(20) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Cr(5)-O(14) bond length is 1.95 Å. The Cr(5)-O(16) bond length is 1.96 Å. The Cr(5)-O(4) bond length is 1.96 Å. The Cr(5)-O(8) bond length is 1.96 Å. Both Cr(5)-O(20) bond lengths are 1.96 Å. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(11), one O(5), one O(9), and two equivalent O(17) atoms to form FeO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Fe(1)-O(1) bond length is 1.97 Å. The Fe(1)-O(11) bond length is 1.97 Å. The Fe(1)-O(5) bond length is 1.96 Å. The Fe(1)-O(9) bond length is 1.96 Å. Both Fe(1)-O(17) bond lengths are 1.96 Å. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(2), one O(6), and two equivalent O(17) atoms to form FeO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Fe(2)-O(10) bond length is 1.96 Å. The Fe(2)-O(12) bond length is 1.97 Å. The Fe(2)-O(2) bond length is 1.97 Å. The Fe(2)-O(6) bond length is 1.96 Å. Both Fe(2)-O(17) bond lengths are 1.96 Å. In the third Fe site, Fe(3) is bonded to one O(1), one O(13), one O(15), one O(5), and two equivalent O(19) atoms to form FeO6 octahedra that share corners with two equivalent Cr(3)O6 octahedra, corners with two equivalent Cr(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Fe(3)-O(1) bond length is 1.96 Å. The Fe(3)-O(13) bond length is 1.96 Å. The Fe(3)-O(15) bond length is 1.97 Å. The Fe(3)-O(5) bond length is 1.95 Å. Both Fe(3)-O(19) bond lengths are 1.96 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Fe(1), and one Fe(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Cr(3), and one Fe(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Cr(1), and one Cr(4) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Cr(2), and one Cr(5) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Fe(1), and one Fe(3) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Cr(3), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Cr(1), and one Cr(4) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(3), one Cr(2), and one Cr(5) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(1), and one Fe(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(2), and one Fe(2) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(1), and one Fe(1) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(2), and one Fe(2) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(4), and one Fe(3) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent La(1), one Cr(3), and one Cr(5) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(4), and one Fe(3) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to two equivalent La(2), two equivalent La(3), one Cr(3), and one Cr(5) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Fe(1), and one Fe(2) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Cr(1), and one Cr(2) atom. In the nineteenth O site, O(19) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Cr(3), and one Fe(3) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(2), one La(3), one Cr(4), and one Cr(5) atom.