The N⋯HF Interactions in the X-Pyridazine⋯(HF)2 Complexes : Substituent Effects and Energy Components
Joint Authors
Habibi-Khorassani, Mostafa
Farrokhzadeh, Abdolkarim
Ebrahimi, Ali
Badichi Akher, Farideh
Source
Advances in Physical Chemistry
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-09
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The effects of substituents on the N⋯HF interactions in the X-pyridazine⋯(HF)n (X = N(CH3)2, NHCH3, NH2, C2H5, CH3, OCH3, OH, CN, OF, NO2, F, Br, Cl, and n=1, 2) complexes have been studied at the B3LYP/6-311++G(d,p) level of theory.
In all complexes, the binding energies increase for the electron-donating substituents and decrease for the electron-withdrawing substituents.
A negative cooperativity is observed for two hydrogen bond interactions.
There are meaningful relationships between the Hammett constants and the energy data and the results of population analysis in the binary and ternary complexes.
Symmetryadapted perturbation theory (SAPT) analysis was also carried out to unveil the nature of hydrogen bond in the complexes 2 and 3.
The electron-donating substituents increase the magnitude of the SAPT interaction energy components and the electron-withdrawing substituents decrease those components.
The highest/lowest change is observed for the Eexch/Edisp component.
The effect of C2H5 (or CH3) on different components is higher than OCH3 in the complex 2 while the trend is reversed in the complex 3.
It is demonstrated that the electrostatic interaction plays a main role in the interaction, although induction and dispersion interactions are also important.
American Psychological Association (APA)
Ebrahimi, Ali& Habibi-Khorassani, Mostafa& Badichi Akher, Farideh& Farrokhzadeh, Abdolkarim. 2012. The N⋯HF Interactions in the X-Pyridazine⋯(HF)2 Complexes : Substituent Effects and Energy Components. Advances in Physical Chemistry،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-466002
Modern Language Association (MLA)
Ebrahimi, Ali…[et al.]. The N⋯HF Interactions in the X-Pyridazine⋯(HF)2 Complexes : Substituent Effects and Energy Components. Advances in Physical Chemistry No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-466002
American Medical Association (AMA)
Ebrahimi, Ali& Habibi-Khorassani, Mostafa& Badichi Akher, Farideh& Farrokhzadeh, Abdolkarim. The N⋯HF Interactions in the X-Pyridazine⋯(HF)2 Complexes : Substituent Effects and Energy Components. Advances in Physical Chemistry. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-466002
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-466002