as if it were an atom's nucleus. Li(NH3)4 = Has one diffuse electron orbiting around Li(NH3)4+ core, i.e., mimics an alkali-metal atom. Be(NH3)4 = Has two diffuse electrons orbiting around Be(NH3)42+ core, i.e., mimics He-atom. VSi16F = has ionic bonding. A cluster of 13 platinum becomes highly paramagnetic, much more so than platinum itself. A cluster of 2,000 rubidium atoms. Superatom complexes Superatom complexes are a special group of superatoms that incorporate a metal core which is stabilized by organic ligands. In thiolate-protected gold cluster complexes a simple electron counting rule can be used to determine the total number of electrons () which correspond to a magic number via, where is the number of metal atoms (A) in the core, is the atomic valence, is the number of electron withdrawing ligands, and is the overall charge on the complex. For example the Au102(p-MBA)44 has 58 electrons and corresponds to a closed shell magic number. Gold superatom complexes Au25(SMe)18− Au102(p-MBA)44 Au144(SR)60 Other superatom complexes Ga23(N(Si(CH3)3)2)11 Al50(C5(CH3)5)12 Re6Se8Cl2 - In 2018 researchers produced 15-nm-thick flakes of this superatomic material. They anticipate that a monolayer will be a superatomic 2-D semiconductor and offer new 2-D materials with unusual, tunable properties. Organo− Zintl-based superatoms:[Ge9(CHO)3] and [Ge9(CHO)] See also Atom cluster Catenation Metal aromaticity Bose–Einstein condensate Quantum dot References External links Designer Magnetic Superatoms, J.U. Reveles, et al. 2009 Gold Superatom Complexes, M. Walter et al. 2008 Gold Superatom Complexes P.D. Jadzinsky et al. 2007 Multiple Valence Superatoms, J.U. Reveles, S.N. Khanna, P.J. Roach, and A.W. Castleman Jr., 2006 On the Aluminum Cluster Superatoms acting as Halogens and Alkaline-earth Metals, Bergeron, Dennis E et al., 2006 Clusters of Aluminum Atoms Found to Have Properties of Other Elements Reveal a New Form of Chemistry, innovations report, 2005. Have a picture of Al14. Clusters of Aluminum Atoms Found to Have Properties of Other Elements Reveal a New Form of Chemistry, Penn State, Eberly College of Science, 2005 Research Reveals Halogen Characteristics innovations report, 2004. Have pictures of Al13. Cluster chemistry Quantum chemistry Atomic physics