<abstract xmlns="http://www.w3.org/1999/xhtml"> Derivatives of anilide were studied systematically by the density functional theory (DFT) using the B3LYP hybrid functional and the 6-311+G(3df,2p) basis set. Characteristic frequencies of N-H and C=O stretching modes for cis and trans conformers distinguishing were compared with available experimental and theoretical data. Effect of substitution in ortho position and acidic residue group is discussed with respect to the bond length changes in the aromatic ring and aromaticity indexes. Energy differences between cis and trans conformations allow estimating the effect of intramolecular hydrogen bonds stabilizing the studied conformations. The trans conformation of parent formanilide is stabilized via the C(aromatic) -H∙∙∙O=C interaction with the energy of around 4 kJ・mol-1. The selected anilide series represent model compounds for drug design.</abstract>

Derivatives of anilide were studied systematically by the density functional theory (DFT) using the B3LYP hybrid functional and the 6-311+G(3df,2p) basis set. Characteristic frequencies of N-H and C=O stretching modes for cis and trans conformers distinguishing were compared with available experimental and theoretical data. Effect of substitution in ortho position and acidic residue group is discussed with respect to the bond length changes in the aromatic ring and aromaticity indexes. Energy differences between cis and trans conformations allow estimating the effect of intramolecular hydrogen bonds stabilizing the studied conformations. The trans conformation of parent formanilide is stabilized via the C(aromatic) -H∙∙∙O=C interaction with the energy of around 4 kJ・mol-1. The selected anilide series represent model compounds for drug design.

Quantum-chemical study of molecular structure and relative stability of trans and cis isomers of model anilide derivatives

Acta Chimica Slovaca

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Derivatives of anilide were studied systematically by the density functional theory (DFT) using the B3LYP hybrid functional and the 6-311+G(3df,2p) basis set....

Quantum-chemical study of molecular structure and relative stability of trans and cis isomers of model anilide derivatives

Published Online: Dec 29, 2017

Page range: 144 - 151

DOI: https://doi.org/10.1515/acs-2017-0024

Keywords
HOMED parameters, acetanilide, aromaticity, steric effect, hydrogen bonding

© Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Quantum-chemical study of molecular structure and relative stability of trans and cis isomers of model anilide derivatives

Published Online: Dec 29, 2017

Page range: 144 - 151

DOI: https://doi.org/10.1515/acs-2017-0024

KeywordsHOMED parameters, acetanilide, aromaticity, steric effect, hydrogen bonding

© Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
HOMED parameters, acetanilide, aromaticity, steric effect, hydrogen bonding