title: Superatom-atom super-bonding in metallic clusters: a new look to the mystery of an Au20 pyramid.
abstract: Using the super valence bond model, a generalized chemical picture for the electronic shells of an Au20 pyramid is given. It is found that Au20 can be viewed to be a superatomic molecule, of which its superatomic 16c-16e core (T) is in D(3)S hybridization bonded with four vertical Au atoms for the molecule-like (TAu4) electronic shell-closure. Based on such a superatom-atom bonding model, TX4 (X = F, Cl, or Br) are predicted to be very stable. Such a superatom-atom T-Au/T-X bonding enriches the scope of chemistry.
authors.affiliation: Department of Chemistry, Anhui University, Hefei, Anhui 230039, People's Republic of China. clj@ustc.edu.
authors.forename: Longjiu
authors.initials: L
authors.lastname: Cheng
authors.forename: Xiuzhen
authors.initials: X
authors.lastname: Zhang
authors.forename: Baokang
authors.initials: B
authors.lastname: Jin
authors.forename: Jinlong
authors.initials: J
authors.lastname: Yang