Cs2SnI6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent I(1) atoms to form CsI12 cuboctahedra that share corners with twelve equivalent Cs(1)I12 cuboctahedra, faces with six equivalent Cs(1)I12 cuboctahedra, and faces with four equivalent Sn(1)I6 octahedra. Sn(1) is bonded to six equivalent I(1) atoms to form SnI6 octahedra that share faces with eight equivalent Cs(1)I12 cuboctahedra. I(1) is bonded to four equivalent Cs(1) and one Sn(1) atom to form a mixture of distorted edge, face, and corner-sharing ICs4Sn square pyramids.
Cs2SnI6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent I(1) atoms to form CsI12 cuboctahedra that share corners with twelve equivalent Cs(1)I12 cuboctahedra, faces with six equivalent Cs(1)I12 cuboctahedra, and faces with four equivalent Sn(1)I6 octahedra. All Cs(1)-I(1) bond lengths are 4.17 Å. Sn(1) is bonded to six equivalent I(1) atoms to form SnI6 octahedra that share faces with eight equivalent Cs(1)I12 cuboctahedra. All Sn(1)-I(1) bond lengths are 2.89 Å. I(1) is bonded to four equivalent Cs(1) and one Sn(1) atom to form a mixture of distorted edge, face, and corner-sharing ICs4Sn square pyramids.