CeFe5Ga7 crystallizes in the orthorhombic Imm2 space group. Ce(1) is bonded in a 20-coordinate geometry to two equivalent Fe(2), eight equivalent Fe(1), one Ga(1), one Ga(2), two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(5) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Ce(1), one Fe(2), two equivalent Fe(1), one Ga(1), one Ga(2), one Ga(4), two equivalent Ga(3), and two equivalent Ga(5) atoms to form distorted FeCe2Ga7Fe3 cuboctahedra that share corners with two equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, corners with two equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, corners with ten equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  an edgeedge with one Fe(2)Ce2Ga6Fe4 cuboctahedra,  an edgeedge with one Ga(4)Ce2Ga6Fe4 cuboctahedra, edges with four equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra, faces with two equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, faces with two equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, and faces with six equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra. In the second Fe site, Fe(2) is bonded to two equivalent Ce(1), four equivalent Fe(1), two equivalent Ga(2), two equivalent Ga(3), and two equivalent Ga(5) atoms to form FeCe2Ga6Fe4 cuboctahedra that share corners with six equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, corners with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  an edgeedge with one Ga(4)Ce2Ga6Fe4 cuboctahedra, edges with two equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, edges with four equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  a faceface with one Ga(4)Ce2Ga6Fe4 cuboctahedra, and faces with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra. There are five inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Ce(1), four equivalent Fe(1), one Ga(2), two equivalent Ga(4), and two equivalent Ga(5) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Ce(1), two equivalent Fe(2), four equivalent Fe(1), one Ga(1), and two equivalent Ga(5) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to one Ce(1), one Fe(2), four equivalent Fe(1), one Ga(3), one Ga(4), and two equivalent Ga(5) atoms. In the fourth Ga site, Ga(4) is bonded to two equivalent Ce(1), four equivalent Fe(1), two equivalent Ga(1), two equivalent Ga(3), and two equivalent Ga(5) atoms to form distorted GaCe2Ga6Fe4 cuboctahedra that share corners with six equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, corners with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  an edgeedge with one Fe(2)Ce2Ga6Fe4 cuboctahedra, edges with two equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, edges with four equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  a faceface with one Fe(2)Ce2Ga6Fe4 cuboctahedra, and faces with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra. In the fifth Ga site, Ga(5) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Fe(2), four equivalent Fe(1), one Ga(1), one Ga(2), one Ga(4), and two equivalent Ga(3) atoms.
CeFe5Ga7 crystallizes in the orthorhombic Imm2 space group. Ce(1) is bonded in a 20-coordinate geometry to two equivalent Fe(2), eight equivalent Fe(1), one Ga(1), one Ga(2), two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(5) atoms. Both Ce(1)-Fe(2) bond lengths are 3.21 Å. There are four shorter (3.28 Å) and four longer (3.37 Å) Ce(1)-Fe(1) bond lengths. The Ce(1)-Ga(1) bond length is 3.03 Å. The Ce(1)-Ga(2) bond length is 2.91 Å. Both Ce(1)-Ga(3) bond lengths are 3.00 Å. Both Ce(1)-Ga(4) bond lengths are 3.23 Å. All Ce(1)-Ga(5) bond lengths are 3.12 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Ce(1), one Fe(2), two equivalent Fe(1), one Ga(1), one Ga(2), one Ga(4), two equivalent Ga(3), and two equivalent Ga(5) atoms to form distorted FeCe2Ga7Fe3 cuboctahedra that share corners with two equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, corners with two equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, corners with ten equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  an edgeedge with one Fe(2)Ce2Ga6Fe4 cuboctahedra,  an edgeedge with one Ga(4)Ce2Ga6Fe4 cuboctahedra, edges with four equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra, faces with two equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, faces with two equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, and faces with six equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra. The Fe(1)-Fe(2) bond length is 2.53 Å. There is one shorter (2.49 Å) and one longer (2.55 Å) Fe(1)-Fe(1) bond length. The Fe(1)-Ga(1) bond length is 2.65 Å. The Fe(1)-Ga(2) bond length is 2.64 Å. The Fe(1)-Ga(4) bond length is 2.52 Å. There is one shorter (2.58 Å) and one longer (2.70 Å) Fe(1)-Ga(3) bond length. There is one shorter (2.49 Å) and one longer (2.58 Å) Fe(1)-Ga(5) bond length. In the second Fe site, Fe(2) is bonded to two equivalent Ce(1), four equivalent Fe(1), two equivalent Ga(2), two equivalent Ga(3), and two equivalent Ga(5) atoms to form FeCe2Ga6Fe4 cuboctahedra that share corners with six equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, corners with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  an edgeedge with one Ga(4)Ce2Ga6Fe4 cuboctahedra, edges with two equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, edges with four equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  a faceface with one Ga(4)Ce2Ga6Fe4 cuboctahedra, and faces with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra. Both Fe(2)-Ga(2) bond lengths are 2.68 Å. Both Fe(2)-Ga(3) bond lengths are 2.60 Å. Both Fe(2)-Ga(5) bond lengths are 2.71 Å. There are five inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Ce(1), four equivalent Fe(1), one Ga(2), two equivalent Ga(4), and two equivalent Ga(5) atoms. The Ga(1)-Ga(2) bond length is 2.75 Å. Both Ga(1)-Ga(4) bond lengths are 2.71 Å. Both Ga(1)-Ga(5) bond lengths are 2.85 Å. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Ce(1), two equivalent Fe(2), four equivalent Fe(1), one Ga(1), and two equivalent Ga(5) atoms. Both Ga(2)-Ga(5) bond lengths are 2.91 Å. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to one Ce(1), one Fe(2), four equivalent Fe(1), one Ga(3), one Ga(4), and two equivalent Ga(5) atoms. The Ga(3)-Ga(3) bond length is 2.73 Å. The Ga(3)-Ga(4) bond length is 2.80 Å. Both Ga(3)-Ga(5) bond lengths are 2.78 Å. In the fourth Ga site, Ga(4) is bonded to two equivalent Ce(1), four equivalent Fe(1), two equivalent Ga(1), two equivalent Ga(3), and two equivalent Ga(5) atoms to form distorted GaCe2Ga6Fe4 cuboctahedra that share corners with six equivalent Fe(2)Ce2Ga6Fe4 cuboctahedra, corners with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  an edgeedge with one Fe(2)Ce2Ga6Fe4 cuboctahedra, edges with two equivalent Ga(4)Ce2Ga6Fe4 cuboctahedra, edges with four equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra,  a faceface with one Fe(2)Ce2Ga6Fe4 cuboctahedra, and faces with eight equivalent Fe(1)Ce2Ga7Fe3 cuboctahedra. Both Ga(4)-Ga(5) bond lengths are 2.74 Å. In the fifth Ga site, Ga(5) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Fe(2), four equivalent Fe(1), one Ga(1), one Ga(2), one Ga(4), and two equivalent Ga(3) atoms.