Ce2Co3Si5 crystallizes in the orthorhombic Ibam space group. Ce(1) is bonded in a 13-coordinate geometry to two equivalent Co(1), three equivalent Co(2), two equivalent Si(1), four equivalent Si(2), and four equivalent Si(3) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 12-coordinate geometry to four equivalent Ce(1), two equivalent Co(1), two equivalent Si(2), and four equivalent Si(3) atoms. In the second Co site, Co(2) is bonded in a 8-coordinate geometry to three equivalent Ce(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Co(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Co(1), two equivalent Co(2), and two equivalent Si(3) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Co(2), two equivalent Co(1), and two equivalent Si(2) atoms.
Ce2Co3Si5 crystallizes in the orthorhombic Ibam space group. Ce(1) is bonded in a 13-coordinate geometry to two equivalent Co(1), three equivalent Co(2), two equivalent Si(1), four equivalent Si(2), and four equivalent Si(3) atoms. Both Ce(1)-Co(1) bond lengths are 3.28 Å. There is one shorter (2.98 Å) and two longer (3.04 Å) Ce(1)-Co(2) bond lengths. Both Ce(1)-Si(1) bond lengths are 3.06 Å. There are two shorter (3.07 Å) and two longer (3.14 Å) Ce(1)-Si(2) bond lengths. There are a spread of Ce(1)-Si(3) bond distances ranging from 2.89-3.09 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 12-coordinate geometry to four equivalent Ce(1), two equivalent Co(1), two equivalent Si(2), and four equivalent Si(3) atoms. Both Co(1)-Co(1) bond lengths are 2.81 Å. Both Co(1)-Si(2) bond lengths are 2.64 Å. All Co(1)-Si(3) bond lengths are 2.33 Å. In the second Co site, Co(2) is bonded in a 8-coordinate geometry to three equivalent Ce(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. The Co(2)-Si(3) bond length is 2.29 Å. Both Co(2)-Si(1) bond lengths are 2.37 Å. Both Co(2)-Si(2) bond lengths are 2.32 Å. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Co(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Co(1), two equivalent Co(2), and two equivalent Si(3) atoms. Both Si(2)-Si(3) bond lengths are 2.49 Å. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Co(2), two equivalent Co(1), and two equivalent Si(2) atoms.