Structural And Vibrational Studies on Isomers of Antiviral Ribavirin Drug in Gas and Aqueous Environmental by Using The SQM Approach

JOURNAL OF ADVANCES IN CHEMISTRY

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Field Value
 
Title Structural And Vibrational Studies on Isomers of Antiviral Ribavirin Drug in Gas and Aqueous Environmental by Using The SQM Approach
 
Creator Ladetto, María Florencia
Márquez, María Jimena
Romani, Davide
Brandán, Silvia Antonia
 
Subject Ribavirin
Vibrational Spectra
Molecular Structure
Force Field
DFT Calculations
 
Description Five stable isomers of antiviral ribavirin agent were theoretically determined in gas and aqueous solution by using the hybrid B3LYP/6-31G* method. Here, the solvent effects were studied with the self consistent reaction field (SCRF) methodology employing the polarized continuum (PCM) and the universal solvation model (SM). Structural, electronic and topological properties were reported for all isomers while the vibrational analyses were performed only for those two polymorphic structures experimentally observed in the solid phase by X-ray diffraction. Calculations have evidenced that C2 correspond to the polymorphic V1 structure while C5 to the polymorphic V2 structure. The high dipole moment values predicted for C2 and C5 in both media could probably explain their presences in the solid. Experimental available IR and Raman spectra of ribavirin in the solid state and normal internal coordinates were employed together with the scaled quantum mechanical force field (SQMFF) approach to perform the complete vibrational assignments in both media. Here, the 81 vibration modes expected for C2 and C5 in both media were completely assigned. The frontier orbitals studies reveal that C5 is the less reactive in both media. Here, the gap value observed for C5 is in agreement with the value recently reported for ribavirin by using B3LYP/6-311++G** calculations.
 
Publisher KHALSA PUBLICATIONS
 
Date 2019-01-31
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://cirworld.com/index.php/jac/article/view/8099
10.24297/jac.v16i0.8099
 
Source JOURNAL OF ADVANCES IN CHEMISTRY; Vol 16 (2019); 6325-6353
2321-807X
 
Language eng
 
Relation http://cirworld.com/index.php/jac/article/view/8099/7661
 
Rights Copyright (c) 2019 JOURNAL OF ADVANCES IN CHEMISTRY
https://creativecommons.org/licenses/by/4.0
 

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