SmCeI4 crystallizes in the monoclinic C2/c space group. Sm(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. Ce(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded to two equivalent Sm(1) and two equivalent Ce(1) atoms to form a mixture of distorted corner, edge, and face-sharing ICe2Sm2 tetrahedra. In the second I site, I(2) is bonded to two equivalent Sm(1) and two equivalent Ce(1) atoms to form a mixture of distorted corner, edge, and face-sharing ICe2Sm2 trigonal pyramids.
SmCeI4 crystallizes in the monoclinic C2/c space group. Sm(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. There are two shorter (3.25 Å) and two longer (3.36 Å) Sm(1)-I(1) bond lengths. There are two shorter (3.31 Å) and two longer (3.38 Å) Sm(1)-I(2) bond lengths. Ce(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. There are two shorter (3.28 Å) and two longer (3.32 Å) Ce(1)-I(1) bond lengths. There are two shorter (3.38 Å) and two longer (3.49 Å) Ce(1)-I(2) bond lengths. There are two inequivalent I sites. In the first I site, I(1) is bonded to two equivalent Sm(1) and two equivalent Ce(1) atoms to form a mixture of distorted corner, edge, and face-sharing ICe2Sm2 tetrahedra. In the second I site, I(2) is bonded to two equivalent Sm(1) and two equivalent Ce(1) atoms to form a mixture of distorted corner, edge, and face-sharing ICe2Sm2 trigonal pyramids.