Collect. Czech. Chem. Commun. 1990, 55, 2363-2367

Topological aspects of chemical reactivity. On physical meaning of the similarity index

Robert Ponec and Martin Strnad

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


The paper analyzes and discusses the detailed physical meaning of the similarity indices of the first and second orders which were introduced originally as characteristics expressing, in the sense of the least-motion principle, the extent of the electron reorganization connected with the transformation of reactants into products within a given reaction.