The Hydrogen bonding effects in structural analysis of phenilon C-2: the quantum-chemical interpretation

Authors

DOI:

https://doi.org/10.15421/081702

Keywords:

ab initio calculation, atomic charge, stabilization energy E(2), basis sets superposition error, scale factor, vibrational spectrum, hydrogen bond

Abstract

Using ab initio methods of quantum chemistry the structure and spectral properties for molecular complexes, which were formed by monomer of phenilon С-2 chain, including some intra- and intermolecular hydrogen bonding effects as well as electrostatic interactions with evaluation of their contributions in total stabilization energy, have been investigated at natural bond orbitals theory. It is shown, that the overlapping of n1,2(O)→ σ*(NН) type with energies 15.4 and 9.5 kJ/mol, which correspond to the strong hydrogen bonding between amide groups, is a main direction for co-operating of some area for structural fragments of macromolecules. The proposed theoretical models are validated in reflection of spectral and energetic parameters for investigating system.

Author Biographies

Andrey V. Tokar, Dnipropetrovsk State University of Agriculture and Economics, S. Efremov Str., 25, Dnipro 49600

associate professor of department of chemistry

Olga P. Chigvintseva, Dnipropetrovsk State University of Agriculture and Economics, S. Efremov Str., 25, Dnipro 49600

head of department of chemistry

References

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Published

2017-11-30

Issue

Vol. 25 No. 1 (2017): Bulletin of Dnipropetrovsk University. Series Chemistry

Section

Organic Chemistry

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Copyright (c) 2017 Oles Honchar Dnipropetrovsk National University

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