Sm3La5Cr6(FeO12)2 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(4), one O(6), two equivalent O(10), two equivalent O(5), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms to form SmO12 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(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. In the second Sm site, Sm(2) is bonded to one O(4), one O(6), two equivalent O(5), four equivalent O(7), and four equivalent O(8) atoms to form SmO12 cuboctahedra that share corners with four equivalent La(4)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with four equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. There are four inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(3), two equivalent O(10), two equivalent O(2), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(2)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(4)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, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. In the second La site, La(2) is bonded to one O(1), one O(3), two equivalent O(2), four equivalent O(7), and four equivalent O(8) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(3)O12 cuboctahedra, corners with eight equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Sm(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. In the third La site, La(3) is bonded to one O(1), one O(3), two equivalent O(2), four equivalent O(10), and four equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, corners with eight equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. In the fourth La site, La(4) is bonded to one O(4), one O(6), two equivalent O(5), four equivalent O(10), and four equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(2)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, faces with four equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(10), one O(2), one O(5), one O(7), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  a faceface with one Sm(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second Cr site, Cr(2) is bonded to one O(3), one O(6), two equivalent O(10), and two equivalent O(8) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  a faceface with one Sm(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. Fe(1) is bonded to one O(1), one O(4), two equivalent O(7), and two equivalent O(9) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  a faceface with one Sm(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted octahedral geometry to one La(2), one La(3), two equivalent La(1), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a distorted linear geometry to one La(2), one La(3), two equivalent La(1), and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to one La(2), one La(3), two equivalent La(1), and two equivalent Cr(2) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Sm(2), two equivalent Sm(1), one La(4), and two equivalent Fe(1) atoms. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Sm(2), two equivalent Sm(1), one La(4), and two equivalent Cr(1) atoms. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sm(2), two equivalent Sm(1), one La(4), and two equivalent Cr(2) atoms. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sm(1), one Sm(2), one La(1), one La(2), one Cr(1), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Sm(1), one Sm(2), one La(1), one La(2), one Cr(1), and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(3), one La(4), one Cr(1), and one Fe(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(3), one La(4), one Cr(1), and one Cr(2) atom.
Sm3La5Cr6(FeO12)2 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(4), one O(6), two equivalent O(10), two equivalent O(5), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms to form SmO12 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(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. The Sm(1)-O(4) bond length is 2.78 Å. The Sm(1)-O(6) bond length is 2.76 Å. Both Sm(1)-O(10) bond lengths are 2.75 Å. Both Sm(1)-O(5) bond lengths are 2.77 Å. Both Sm(1)-O(7) bond lengths are 2.76 Å. Both Sm(1)-O(8) bond lengths are 2.75 Å. Both Sm(1)-O(9) bond lengths are 2.76 Å. In the second Sm site, Sm(2) is bonded to one O(4), one O(6), two equivalent O(5), four equivalent O(7), and four equivalent O(8) atoms to form SmO12 cuboctahedra that share corners with four equivalent La(4)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with four equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. The Sm(2)-O(4) bond length is 2.76 Å. The Sm(2)-O(6) bond length is 2.75 Å. Both Sm(2)-O(5) bond lengths are 2.75 Å. All Sm(2)-O(7) bond lengths are 2.76 Å. All Sm(2)-O(8) bond lengths are 2.75 Å. There are four inequivalent La sites. In the first La site, La(1) is bonded to one O(1), one O(3), two equivalent O(10), two equivalent O(2), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(2)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(4)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, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. The La(1)-O(1) bond length is 2.78 Å. The La(1)-O(3) bond length is 2.77 Å. Both La(1)-O(10) bond lengths are 2.77 Å. Both La(1)-O(2) bond lengths are 2.77 Å. Both La(1)-O(7) bond lengths are 2.79 Å. Both La(1)-O(8) bond lengths are 2.79 Å. Both La(1)-O(9) bond lengths are 2.78 Å. In the second La site, La(2) is bonded to one O(1), one O(3), two equivalent O(2), four equivalent O(7), and four equivalent O(8) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(3)O12 cuboctahedra, corners with eight equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Sm(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. The La(2)-O(1) bond length is 2.78 Å. The La(2)-O(3) bond length is 2.77 Å. Both La(2)-O(2) bond lengths are 2.77 Å. All La(2)-O(7) bond lengths are 2.79 Å. All La(2)-O(8) bond lengths are 2.79 Å. In the third La site, La(3) is bonded to one O(1), one O(3), two equivalent O(2), four equivalent O(10), and four equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, corners with eight equivalent Sm(1)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. The La(3)-O(1) bond length is 2.78 Å. The La(3)-O(3) bond length is 2.77 Å. Both La(3)-O(2) bond lengths are 2.77 Å. All La(3)-O(10) bond lengths are 2.79 Å. All La(3)-O(9) bond lengths are 2.79 Å. In the fourth La site, La(4) is bonded to one O(4), one O(6), two equivalent O(5), four equivalent O(10), and four equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(2)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, faces with four equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Cr(2)O6 octahedra, faces with two equivalent Fe(1)O6 octahedra, and faces with four equivalent Cr(1)O6 octahedra. The La(4)-O(4) bond length is 2.79 Å. The La(4)-O(6) bond length is 2.79 Å. Both La(4)-O(5) bond lengths are 2.79 Å. All La(4)-O(10) bond lengths are 2.77 Å. All La(4)-O(9) bond lengths are 2.77 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(10), one O(2), one O(5), one O(7), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  a faceface with one Sm(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Cr(1)-O(10) bond length is 1.97 Å. The Cr(1)-O(2) bond length is 1.97 Å. The Cr(1)-O(5) bond length is 1.95 Å. The Cr(1)-O(7) bond length is 1.95 Å. The Cr(1)-O(8) bond length is 1.96 Å. The Cr(1)-O(9) bond length is 1.96 Å. In the second Cr site, Cr(2) is bonded to one O(3), one O(6), two equivalent O(10), and two equivalent O(8) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  a faceface with one Sm(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Cr(2)-O(3) bond length is 1.97 Å. The Cr(2)-O(6) bond length is 1.95 Å. Both Cr(2)-O(10) bond lengths are 1.96 Å. Both Cr(2)-O(8) bond lengths are 1.96 Å. Fe(1) is bonded to one O(1), one O(4), two equivalent O(7), and two equivalent O(9) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra,  a faceface with one Sm(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, and faces with two equivalent La(1)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(4) bond length is 1.95 Å. Both Fe(1)-O(7) bond lengths are 1.96 Å. Both Fe(1)-O(9) bond lengths are 1.97 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted octahedral geometry to one La(2), one La(3), two equivalent La(1), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a distorted linear geometry to one La(2), one La(3), two equivalent La(1), and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to one La(2), one La(3), two equivalent La(1), and two equivalent Cr(2) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Sm(2), two equivalent Sm(1), one La(4), and two equivalent Fe(1) atoms. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Sm(2), two equivalent Sm(1), one La(4), and two equivalent Cr(1) atoms. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sm(2), two equivalent Sm(1), one La(4), and two equivalent Cr(2) atoms. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sm(1), one Sm(2), one La(1), one La(2), one Cr(1), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Sm(1), one Sm(2), one La(1), one La(2), one Cr(1), and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(3), one La(4), one Cr(1), and one Fe(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to one Sm(1), one La(1), one La(3), one La(4), one Cr(1), and one Cr(2) atom.