title: Conceptual DFT Descriptors of Amino Acids with Potential Corrosion Inhibition Properties Calculated with the Latest Minnesota Density Functionals.
abstract: Amino acids and peptides have the potential to perform as corrosion inhibitors. The chemical reactivity descriptors that arise from Conceptual DFT for the twenty natural amino acids have been calculated by using the latest Minnesota family of density functionals. In order to verify the validity of the calculation of the descriptors directly from the HOMO and LUMO, a comparison has been performed with those obtained through ΔSCF results. Moreover, the active sites for nucleophilic and electrophilic attacks have been identified through Fukui function indices, the dual descriptor Δf(r) and the electrophilic and nucleophilic Parr functions. The results could be of interest as a starting point for the study of large peptides where the calculation of the radical cation and anion of each system may be computationally harder and costly.
authors.affiliation: Departament de Química, Universitat de les Illes Balears Palma de Mallorca, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Frau
authors.affiliation: Departament de Química, Universitat de les Illes BalearsPalma de Mallorca, Spain; Laboratorio Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales AvanzadosChihuahua, Mexico.
authors.forename: Daniel
authors.initials: D
authors.lastname: Glossman-Mitnik
keywords: Minnesota density functionals; amino acids; computational chemistry; conceptual DFT; corrosion inhibition