SCCJ Cafe –Season 3– Theoretical Chemistry in Nordic (3) "Quintuple Bond and Effective Bond Order (EBO)"

Abstract

In 2005 Gagliardi and Roos found the quintuple bond in uranium molecule using computational chemistry. It consists of three strong electron-pair bonds, two fully developed one-electron bonds, two weak one-electron bonds, and two localized electrons. Moreover, in a subsequent paper, Roos et al. defined the effective bond order (EBO) which gives a quantitative measure of the chemical bonding based on molecular orbitals. In this paper, the culture of quantum chemistry and life in Sweden are also briefly touched upon.