[Cd₁₆In₆₄S₁₃₄]⁴⁴⁻: 31‐Å Tetrahedron with a Large Cavity

The hole story? A super-supertetrahedral anionic cluster of 214 atoms and 80 tetrahedral units is prepared. The crystal structure has finite tetrahedral units of [Cd16In64S134]44− ions composed of four T4 supertetrahedra (see picture). Each cluster is nearly a regular tetrahedron with edge lengths of 31.06 and 31.07 Å, and has large octahedral cavity (yellow sphere).