Okuma Emile Kasende

Molecular Complexes of Polyfunctional Heterocyclic Bases

Hydrogen-bonded and Stacked Complexes

• Broschiertes Buch

Produktbeschreibung

The inclusion of a second or third heteroatom within the aromatic ring modifies the electron-donating powers of the bases and multiplies the versatility of the polyfunctional heterocyclic bases, allowing several non-covalent interactions into molecular complexes. As several polyfunctional heterocyclic bases are carrying carbonyl group(s) and nitrogen atom (s) as possible proton acceptor sites, a combined experimental and theoretical study of FT-IR matrix-isolated spectra for the base and its H-bonded complexes in argon performed suggests that H-bonding with proton donor occurs at the carbonyl group whereas the protonation interaction is preferred on the nitrogen atom.Most of structures of their non-covalent formed complexes fall into H-bonded complexes, which are coplanar structures, characterized by H-bonds and Stacked complexes in which the aromatic systems of the two molecules are arranged parallel to one another by dispersion energy. Some stacked configurations are reinforcedby H-bonds, but geometries containing only H-bonds, without the aromatic stacking, are much less stable, even if the H-bonds are short and strong.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 200
• Erscheinungstermin: 12. November 2021
• Englisch
• Abmessung: 220mm x 150mm x 12mm
• Gewicht: 316g
• ISBN-13: 9786204208046
• ISBN-10: 6204208047
• Artikelnr.: 62942939

Autorenporträt

Dr Okuma Emile Kasende is currently Professor Emeritus of Physical Chemistry at the Faculty of Sciences, University of Kinshasa, D.R. Congo. He began his academic career in University of Kinshasa after completing his PhD degree in Physical Chemistry at Katholieke Universiteit Leuven, Belgium, in 1984.