Ce2Pd3Si5 crystallizes in the orthorhombic I222 space group. Ce(1) is bonded in a 17-coordinate geometry to one Pd(1), one Pd(2), five equivalent Pd(3), one Si(4), one Si(5), two equivalent Si(2), two equivalent Si(3), and four equivalent Si(1) atoms. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 6-coordinate geometry to four equivalent Ce(1), two equivalent Si(3), and four equivalent Si(1) atoms. In the second Pd site, Pd(2) is bonded in a 6-coordinate geometry to four equivalent Ce(1), two equivalent Si(2), and four equivalent Si(1) atoms. In the third Pd site, Pd(3) is bonded in a 5-coordinate geometry to five equivalent Ce(1), one Si(1), one Si(2), one Si(3), one Si(4), and one Si(5) atom. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Pd(1), one Pd(2), one Pd(3), one Si(2), and one Si(3) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Pd(2), two equivalent Pd(3), and two equivalent Si(1) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Pd(1), two equivalent Pd(3), and two equivalent Si(1) atoms. In the fourth Si site, Si(4) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Pd(3) atoms. In the fifth Si site, Si(5) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Pd(3) atoms.
Ce2Pd3Si5 crystallizes in the orthorhombic I222 space group. Ce(1) is bonded in a 17-coordinate geometry to one Pd(1), one Pd(2), five equivalent Pd(3), one Si(4), one Si(5), two equivalent Si(2), two equivalent Si(3), and four equivalent Si(1) atoms. The Ce(1)-Pd(1) bond length is 3.41 Å. The Ce(1)-Pd(2) bond length is 3.41 Å. There are a spread of Ce(1)-Pd(3) bond distances ranging from 3.18-3.41 Å. The Ce(1)-Si(4) bond length is 3.15 Å. The Ce(1)-Si(5) bond length is 3.15 Å. There is one shorter (3.26 Å) and one longer (3.27 Å) Ce(1)-Si(2) bond length. There is one shorter (3.26 Å) and one longer (3.27 Å) Ce(1)-Si(3) bond length. There are a spread of Ce(1)-Si(1) bond distances ranging from 3.08-3.24 Å. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 6-coordinate geometry to four equivalent Ce(1), two equivalent Si(3), and four equivalent Si(1) atoms. Both Pd(1)-Si(3) bond lengths are 2.65 Å. All Pd(1)-Si(1) bond lengths are 2.51 Å. In the second Pd site, Pd(2) is bonded in a 6-coordinate geometry to four equivalent Ce(1), two equivalent Si(2), and four equivalent Si(1) atoms. Both Pd(2)-Si(2) bond lengths are 2.65 Å. All Pd(2)-Si(1) bond lengths are 2.50 Å. In the third Pd site, Pd(3) is bonded in a 5-coordinate geometry to five equivalent Ce(1), one Si(1), one Si(2), one Si(3), one Si(4), and one Si(5) atom. The Pd(3)-Si(1) bond length is 2.44 Å. The Pd(3)-Si(2) bond length is 2.45 Å. The Pd(3)-Si(3) bond length is 2.46 Å. The Pd(3)-Si(4) bond length is 2.46 Å. The Pd(3)-Si(5) bond length is 2.47 Å. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Pd(1), one Pd(2), one Pd(3), one Si(2), and one Si(3) atom. The Si(1)-Si(2) bond length is 2.48 Å. The Si(1)-Si(3) bond length is 2.48 Å. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Pd(2), two equivalent Pd(3), and two equivalent Si(1) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Pd(1), two equivalent Pd(3), and two equivalent Si(1) atoms. In the fourth Si site, Si(4) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Pd(3) atoms. In the fifth Si site, Si(5) is bonded in a 8-coordinate geometry to four equivalent Ce(1) and four equivalent Pd(3) atoms.