Nontemplate synthesis, characterization and theoretical study of tetraazamacrocycles
Journal Title: Ovidius University Annals of Chemistry - Analele Universităţii "Ovidius" Constanţa. Seria chimie - Year 2012, Vol 23, Issue 1
Abstract
The syntheses of new tetraaza macrocyclic compounds of variable ring sizes by non-template methods and their characterization with the help of elemental analysis and spectroscopic techniques (FT-IR, [sup]1[/sup]H-NMR, and [sup]13[/sup]C-NMR) have been reported in detail. The vibrational frequencies determined experimentally are compared with those obtained theoretically from density functional theory (DFT) and Hartree-Fock (HF) calculations. The comparisons between the experimental and theoretical results indicate that B3LYP level with both the 3-21G(d) and 6-31G+(d,p) basis sets is able to provide satisfactory results for predicting IR properties. The frontier molecular orbital diagrams and molecular electrostatic potential maps of title compounds have been also calculated and visualized at the B3LYP/6-31G+(d,p) level of theory.
Authors and Affiliations
ŞEN İbrahim, YILDIZ Cem Burak, AZIZOĞLU Akın
Keywords
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