title: Structure and bonding in the omnicapped truncated tetrahedral Au20 cluster: analogies between gold and carbon cluster chemistry.
abstract: The proposed omnicapped truncated tetrahedral structure of the recently reported Au20 cluster can be generated from a regular dodecahedron by forming two transannular Au-Au bonds across each face while preserving T symmetry. An electron-precise chemical bonding scheme accounts for the large band gap (1.77 eV) of Au20 and relates its structure to that of titanacarbohedrene Ti8C12 and Os20(CO)40(2)-.
authors.affiliation: Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA. rbking@sunchem.chem.uga.edu
authors.forename: R Bruce
authors.initials: RB
authors.lastname: King
authors.forename: Zhongfang
authors.initials: Z
authors.lastname: Chen
authors.forename: Paul Von Ragué
authors.initials: PV
authors.lastname: Schleyer