SmLaI4 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. La(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 in a 4-coordinate geometry to two equivalent Sm(1) and two equivalent La(1) atoms. In the second I site, I(2) is bonded to two equivalent Sm(1) and two equivalent La(1) atoms to form a mixture of distorted corner and edge-sharing ILa2Sm2 tetrahedra.
SmLaI4 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 (3.24 Å) and two longer (3.41 Å) Sm(1)-I(1) bond lengths. There are two shorter (3.26 Å) and two longer (3.38 Å) Sm(1)-I(2) bond lengths. La(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. There are two shorter (3.31 Å) and two longer (3.74 Å) La(1)-I(1) bond lengths. There are two shorter (3.23 Å) and two longer (3.32 Å) La(1)-I(2) bond lengths. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 4-coordinate geometry to two equivalent Sm(1) and two equivalent La(1) atoms. In the second I site, I(2) is bonded to two equivalent Sm(1) and two equivalent La(1) atoms to form a mixture of distorted corner and edge-sharing ILa2Sm2 tetrahedra.