Y(CrFe3)3 crystallizes in the orthorhombic Imm2 space group. Y(1) is bonded in a 20-coordinate geometry to one Cr(1), two equivalent Cr(2), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(1), and eight equivalent Fe(4) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 1-coordinate geometry to one Y(1), four equivalent Cr(2), one Fe(5), two equivalent Fe(1), two equivalent Fe(3), and four equivalent Fe(4) atoms. In the second Cr site, Cr(2) is bonded in a 14-coordinate geometry to one Y(1), one Cr(2), two equivalent Cr(1), one Fe(2), one Fe(3), two equivalent Fe(1), two equivalent Fe(5), and four equivalent Fe(4) atoms. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Y(1), one Cr(1), two equivalent Cr(2), one Fe(2), one Fe(3), one Fe(5), and four equivalent Fe(4) atoms to form distorted FeY2Cr3Fe7 cuboctahedra that share corners with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, corners with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, corners with six equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra, edges with three equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  a faceface with one Fe(1)Y2Cr3Fe7 cuboctahedra, faces with three equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, faces with three equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, and faces with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. In the second Fe site, Fe(2) is bonded to two equivalent Y(1), two equivalent Cr(2), two equivalent Fe(1), two equivalent Fe(5), and four equivalent Fe(4) atoms to form distorted FeY2Cr2Fe8 cuboctahedra that share corners with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with six equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, corners with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  an edgeedge with one Fe(3)Y2Cr4Fe6 cuboctahedra, edges with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  a faceface with one Fe(3)Y2Cr4Fe6 cuboctahedra, faces with six equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, and faces with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. In the third Fe site, Fe(3) is bonded to two equivalent Y(1), two equivalent Cr(1), two equivalent Cr(2), two equivalent Fe(1), and four equivalent Fe(4) atoms to form distorted FeY2Cr4Fe6 cuboctahedra that share corners with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with six equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, corners with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  an edgeedge with one Fe(2)Y2Cr2Fe8 cuboctahedra, edges with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  a faceface with one Fe(2)Y2Cr2Fe8 cuboctahedra, faces with six equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, and faces with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. In the fourth Fe site, Fe(4) is bonded to two equivalent Y(1), one Cr(1), two equivalent Cr(2), one Fe(2), one Fe(3), one Fe(5), two equivalent Fe(1), and two equivalent Fe(4) atoms to form distorted FeY2Cr3Fe7 cuboctahedra that share corners with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, corners with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, corners with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with ten equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  an edgeedge with one Fe(2)Y2Cr2Fe8 cuboctahedra,  an edgeedge with one Fe(3)Y2Cr4Fe6 cuboctahedra, edges with two equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra, faces with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, faces with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, faces with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, and faces with six equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. In the fifth Fe site, Fe(5) is bonded in a distorted single-bond geometry to one Y(1), one Cr(1), four equivalent Cr(2), two equivalent Fe(1), two equivalent Fe(2), and four equivalent Fe(4) atoms.
Y(CrFe3)3 crystallizes in the orthorhombic Imm2 space group. Y(1) is bonded in a 20-coordinate geometry to one Cr(1), two equivalent Cr(2), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(1), and eight equivalent Fe(4) atoms. The Y(1)-Cr(1) bond length is 3.08 Å. Both Y(1)-Cr(2) bond lengths are 3.07 Å. The Y(1)-Fe(5) bond length is 3.04 Å. Both Y(1)-Fe(2) bond lengths are 3.00 Å. Both Y(1)-Fe(3) bond lengths are 3.06 Å. All Y(1)-Fe(1) bond lengths are 3.01 Å. There are four shorter (3.17 Å) and four longer (3.20 Å) Y(1)-Fe(4) bond lengths. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 1-coordinate geometry to one Y(1), four equivalent Cr(2), one Fe(5), two equivalent Fe(1), two equivalent Fe(3), and four equivalent Fe(4) atoms. All Cr(1)-Cr(2) bond lengths are 2.85 Å. The Cr(1)-Fe(5) bond length is 2.30 Å. Both Cr(1)-Fe(1) bond lengths are 2.56 Å. Both Cr(1)-Fe(3) bond lengths are 2.61 Å. All Cr(1)-Fe(4) bond lengths are 2.55 Å. In the second Cr site, Cr(2) is bonded in a 14-coordinate geometry to one Y(1), one Cr(2), two equivalent Cr(1), one Fe(2), one Fe(3), two equivalent Fe(1), two equivalent Fe(5), and four equivalent Fe(4) atoms. The Cr(2)-Cr(2) bond length is 2.19 Å. The Cr(2)-Fe(2) bond length is 2.53 Å. The Cr(2)-Fe(3) bond length is 2.56 Å. Both Cr(2)-Fe(1) bond lengths are 2.63 Å. Both Cr(2)-Fe(5) bond lengths are 2.82 Å. There are two shorter (2.59 Å) and two longer (2.62 Å) Cr(2)-Fe(4) bond lengths. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Y(1), one Cr(1), two equivalent Cr(2), one Fe(2), one Fe(3), one Fe(5), and four equivalent Fe(4) atoms to form distorted FeY2Cr3Fe7 cuboctahedra that share corners with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, corners with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, corners with six equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra, edges with three equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  a faceface with one Fe(1)Y2Cr3Fe7 cuboctahedra, faces with three equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, faces with three equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, and faces with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. The Fe(1)-Fe(2) bond length is 2.68 Å. The Fe(1)-Fe(3) bond length is 2.68 Å. The Fe(1)-Fe(5) bond length is 2.54 Å. There are two shorter (2.41 Å) and two longer (2.43 Å) Fe(1)-Fe(4) bond lengths. In the second Fe site, Fe(2) is bonded to two equivalent Y(1), two equivalent Cr(2), two equivalent Fe(1), two equivalent Fe(5), and four equivalent Fe(4) atoms to form distorted FeY2Cr2Fe8 cuboctahedra that share corners with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with six equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, corners with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  an edgeedge with one Fe(3)Y2Cr4Fe6 cuboctahedra, edges with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  a faceface with one Fe(3)Y2Cr4Fe6 cuboctahedra, faces with six equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, and faces with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. Both Fe(2)-Fe(5) bond lengths are 2.63 Å. All Fe(2)-Fe(4) bond lengths are 2.42 Å. In the third Fe site, Fe(3) is bonded to two equivalent Y(1), two equivalent Cr(1), two equivalent Cr(2), two equivalent Fe(1), and four equivalent Fe(4) atoms to form distorted FeY2Cr4Fe6 cuboctahedra that share corners with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with six equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, corners with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  an edgeedge with one Fe(2)Y2Cr2Fe8 cuboctahedra, edges with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  a faceface with one Fe(2)Y2Cr2Fe8 cuboctahedra, faces with six equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, and faces with eight equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. All Fe(3)-Fe(4) bond lengths are 2.38 Å. In the fourth Fe site, Fe(4) is bonded to two equivalent Y(1), one Cr(1), two equivalent Cr(2), one Fe(2), one Fe(3), one Fe(5), two equivalent Fe(1), and two equivalent Fe(4) atoms to form distorted FeY2Cr3Fe7 cuboctahedra that share corners with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, corners with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, corners with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, corners with ten equivalent Fe(4)Y2Cr3Fe7 cuboctahedra,  an edgeedge with one Fe(2)Y2Cr2Fe8 cuboctahedra,  an edgeedge with one Fe(3)Y2Cr4Fe6 cuboctahedra, edges with two equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, edges with four equivalent Fe(4)Y2Cr3Fe7 cuboctahedra, faces with two equivalent Fe(2)Y2Cr2Fe8 cuboctahedra, faces with two equivalent Fe(3)Y2Cr4Fe6 cuboctahedra, faces with four equivalent Fe(1)Y2Cr3Fe7 cuboctahedra, and faces with six equivalent Fe(4)Y2Cr3Fe7 cuboctahedra. The Fe(4)-Fe(5) bond length is 2.60 Å. Both Fe(4)-Fe(4) bond lengths are 2.35 Å. In the fifth Fe site, Fe(5) is bonded in a distorted single-bond geometry to one Y(1), one Cr(1), four equivalent Cr(2), two equivalent Fe(1), two equivalent Fe(2), and four equivalent Fe(4) atoms.