Superatom–atom super-bonding in metallic clusters: a new look to the mystery of an Au20 pyramid

Superatom–atom bonding in Au₂₀ : Au₂₀ can be viewed as a superatomic molecule, of which the superatomic 16c–16e core (T) is in D³S hybridization bonded with four vertical Au atoms for molecule-like (TAu₄) electronic shell-closure.