CeFe11Ti crystallizes in the orthorhombic Imm2 space group. Ce(1) is bonded in a 20-coordinate geometry to one Ti(1), one Fe(5), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(6), four equivalent Fe(3), and eight equivalent Fe(4) atoms. Ti(1) is bonded in a 14-coordinate geometry to one Ce(1), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Ce(1), two equivalent Fe(3), two equivalent Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms to form distorted FeCe2Fe10 cuboctahedra that share corners with eight equivalent Fe(4)Ce2TiFe9 cuboctahedra, edges with two equivalent Fe(1)Ce2Fe10 cuboctahedra, edges with four equivalent Fe(4)Ce2TiFe9 cuboctahedra, and faces with eight equivalent Fe(4)Ce2TiFe9 cuboctahedra. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Ti(1), two equivalent Fe(3), two equivalent Fe(6), and four equivalent Fe(4) atoms. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Ti(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms. In the fourth Fe site, Fe(4) is bonded to two equivalent Ce(1), one Ti(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(6) atoms to form distorted FeCe2TiFe9 cuboctahedra that share corners with two equivalent Fe(1)Ce2Fe10 cuboctahedra, corners with ten equivalent Fe(4)Ce2TiFe9 cuboctahedra,  an edgeedge with one Fe(1)Ce2Fe10 cuboctahedra, edges with four equivalent Fe(4)Ce2TiFe9 cuboctahedra, faces with two equivalent Fe(1)Ce2Fe10 cuboctahedra, and faces with six equivalent Fe(4)Ce2TiFe9 cuboctahedra. In the fifth Fe site, Fe(5) is bonded in a 1-coordinate geometry to one Ce(1), one Ti(1), two equivalent Fe(1), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. In the sixth Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Ce(1), two equivalent Ti(1), one Fe(1), one Fe(2), one Fe(6), two equivalent Fe(3), two equivalent Fe(5), and four equivalent Fe(4) atoms.
CeFe11Ti crystallizes in the orthorhombic Imm2 space group. Ce(1) is bonded in a 20-coordinate geometry to one Ti(1), one Fe(5), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(6), four equivalent Fe(3), and eight equivalent Fe(4) atoms. The Ce(1)-Ti(1) bond length is 3.22 Å. The Ce(1)-Fe(5) bond length is 2.97 Å. Both Ce(1)-Fe(1) bond lengths are 3.03 Å. Both Ce(1)-Fe(2) bond lengths are 3.08 Å. Both Ce(1)-Fe(6) bond lengths are 3.09 Å. All Ce(1)-Fe(3) bond lengths are 3.03 Å. There are four shorter (3.22 Å) and four longer (3.29 Å) Ce(1)-Fe(4) bond lengths. Ti(1) is bonded in a 14-coordinate geometry to one Ce(1), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. The Ti(1)-Fe(5) bond length is 2.34 Å. Both Ti(1)-Fe(2) bond lengths are 2.63 Å. Both Ti(1)-Fe(3) bond lengths are 2.64 Å. All Ti(1)-Fe(4) bond lengths are 2.66 Å. All Ti(1)-Fe(6) bond lengths are 2.86 Å. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Ce(1), two equivalent Fe(3), two equivalent Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms to form distorted FeCe2Fe10 cuboctahedra that share corners with eight equivalent Fe(4)Ce2TiFe9 cuboctahedra, edges with two equivalent Fe(1)Ce2Fe10 cuboctahedra, edges with four equivalent Fe(4)Ce2TiFe9 cuboctahedra, and faces with eight equivalent Fe(4)Ce2TiFe9 cuboctahedra. Both Fe(1)-Fe(3) bond lengths are 2.77 Å. Both Fe(1)-Fe(5) bond lengths are 2.56 Å. Both Fe(1)-Fe(6) bond lengths are 2.60 Å. All Fe(1)-Fe(4) bond lengths are 2.46 Å. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Ti(1), two equivalent Fe(3), two equivalent Fe(6), and four equivalent Fe(4) atoms. Both Fe(2)-Fe(3) bond lengths are 2.73 Å. Both Fe(2)-Fe(6) bond lengths are 2.61 Å. All Fe(2)-Fe(4) bond lengths are 2.47 Å. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Ce(1), one Ti(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms. The Fe(3)-Fe(5) bond length is 2.69 Å. Both Fe(3)-Fe(6) bond lengths are 2.61 Å. There are two shorter (2.43 Å) and two longer (2.45 Å) Fe(3)-Fe(4) bond lengths. In the fourth Fe site, Fe(4) is bonded to two equivalent Ce(1), one Ti(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(6) atoms to form distorted FeCe2TiFe9 cuboctahedra that share corners with two equivalent Fe(1)Ce2Fe10 cuboctahedra, corners with ten equivalent Fe(4)Ce2TiFe9 cuboctahedra,  an edgeedge with one Fe(1)Ce2Fe10 cuboctahedra, edges with four equivalent Fe(4)Ce2TiFe9 cuboctahedra, faces with two equivalent Fe(1)Ce2Fe10 cuboctahedra, and faces with six equivalent Fe(4)Ce2TiFe9 cuboctahedra. The Fe(4)-Fe(5) bond length is 2.61 Å. There is one shorter (2.33 Å) and one longer (2.34 Å) Fe(4)-Fe(4) bond length. There is one shorter (2.60 Å) and one longer (2.61 Å) Fe(4)-Fe(6) bond length. In the fifth Fe site, Fe(5) is bonded in a 1-coordinate geometry to one Ce(1), one Ti(1), two equivalent Fe(1), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. All Fe(5)-Fe(6) bond lengths are 2.92 Å. In the sixth Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Ce(1), two equivalent Ti(1), one Fe(1), one Fe(2), one Fe(6), two equivalent Fe(3), two equivalent Fe(5), and four equivalent Fe(4) atoms. The Fe(6)-Fe(6) bond length is 2.46 Å.