Journal
JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM
Volume 869, Issue 1-3, Pages 41-46Publisher
ELSEVIER
DOI: 10.1016/j.theochem.2008.08.019
Keywords
AIM; Hydrazinoturn; Hydrazinopeptides; Aza-beta(3)-peptides; Bifurcated hydrogen bonding
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This paper follows a previous publication [Salaun, A., et al.. Conformation of N alpha-substituted hydrazino acetamides in CDCl3, the precious help of the analysis of Delta delta between amidic hydrogens, and correlation to the conformation of Aza-beta(3)-peptides. J. Org. Chem. 71 (2006) 150-158] where the so called hydrazinoturn hydrogen bond network is assessed in aza-beta(3)-peptides, as modeled by selected representative hydrazinoacetamides, on the basis of proton NMR. In this paper, DFT theoretical calculations at the B3LYP/6-311G++(d,p) level of theory are described in order to shed light on the intramolecular hydrogen bond network of the same molecules. The analysis is carried on by means of the AIM topological analysis of the electronic density. (C) 2008 Elsevier B.V. All rights reserved.
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