La3SiI3 crystallizes in the cubic I4_132 space group. La(1) is bonded to two equivalent Si(1) and four equivalent I(1) atoms to form a mixture of edge and corner-sharing LaSi2I4 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. Si(1) is bonded to six equivalent La(1) atoms to form edge-sharing SiLa6 octahedra. I(1) is bonded in a rectangular see-saw-like geometry to four equivalent La(1) atoms.
La3SiI3 crystallizes in the cubic I4_132 space group. La(1) is bonded to two equivalent Si(1) and four equivalent I(1) atoms to form a mixture of edge and corner-sharing LaSi2I4 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. Both La(1)-Si(1) bond lengths are 2.99 Å. There are two shorter (3.31 Å) and two longer (3.40 Å) La(1)-I(1) bond lengths. Si(1) is bonded to six equivalent La(1) atoms to form edge-sharing SiLa6 octahedra. I(1) is bonded in a rectangular see-saw-like geometry to four equivalent La(1) atoms.