Ce2SnSi2 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 10-coordinate geometry to four equivalent Sn(1), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. In the second Ce site, Ce(2) is bonded in a 10-coordinate geometry to four equivalent Sn(1), two equivalent Si(3), and four equivalent Si(1) atoms. In the third Ce site, Ce(3) is bonded in a 10-coordinate geometry to four equivalent Sn(1), two equivalent Si(2), and four equivalent Si(1) atoms. Sn(1) is bonded to two equivalent Ce(2), two equivalent Ce(3), four equivalent Ce(1), one Si(2), one Si(3), and two equivalent Si(1) atoms to form a mixture of corner and face-sharing SnCe8Si4 cuboctahedra. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), two equivalent Sn(1), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ce(3), four equivalent Ce(1), two equivalent Sn(1), and one Si(3) atom. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), two equivalent Sn(1), and one Si(2) atom.
Ce2SnSi2 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 10-coordinate geometry to four equivalent Sn(1), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are two shorter (3.49 Å) and two longer (3.51 Å) Ce(1)-Sn(1) bond lengths. Both Ce(1)-Si(1) bond lengths are 3.09 Å. Both Ce(1)-Si(2) bond lengths are 3.14 Å. Both Ce(1)-Si(3) bond lengths are 3.15 Å. In the second Ce site, Ce(2) is bonded in a 10-coordinate geometry to four equivalent Sn(1), two equivalent Si(3), and four equivalent Si(1) atoms. All Ce(2)-Sn(1) bond lengths are 3.49 Å. Both Ce(2)-Si(3) bond lengths are 3.08 Å. All Ce(2)-Si(1) bond lengths are 3.14 Å. In the third Ce site, Ce(3) is bonded in a 10-coordinate geometry to four equivalent Sn(1), two equivalent Si(2), and four equivalent Si(1) atoms. All Ce(3)-Sn(1) bond lengths are 3.51 Å. Both Ce(3)-Si(2) bond lengths are 3.09 Å. All Ce(3)-Si(1) bond lengths are 3.14 Å. Sn(1) is bonded to two equivalent Ce(2), two equivalent Ce(3), four equivalent Ce(1), one Si(2), one Si(3), and two equivalent Si(1) atoms to form a mixture of corner and face-sharing SnCe8Si4 cuboctahedra. The Sn(1)-Si(2) bond length is 2.99 Å. The Sn(1)-Si(3) bond length is 2.97 Å. There is one shorter (2.97 Å) and one longer (3.00 Å) Sn(1)-Si(1) bond length. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), two equivalent Sn(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.35 Å. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ce(3), four equivalent Ce(1), two equivalent Sn(1), and one Si(3) atom. The Si(2)-Si(3) bond length is 2.37 Å. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), two equivalent Sn(1), and one Si(2) atom.