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A Vibrational Spectroscopy Study on Anserine and Its Aqueous Solutions

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Author
Akkaya, Yasemin
Balcı, Kubilay
Gören, Yeliz
Akyüz, Sevim
Stricker, Moogega C.
Ritzhaupt, G.
Stover, D. D.
Collier, W. B.
Type
Article
Date
2015-10-05
Language
en_US
Metadata
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Abstract
In this study based on vibrational spectroscopic measurements and Density Functional Theory (OFF), we aimed for a reliable interpretation of the IR and Raman spectra recorded for anserine in the solid phase and water (H2O) and heavy water (D2O) solutions. Initial DFT calculations at the B3LYP/6-31G(d) searched possible conformers of the anserine zwitterion using a systematic conformational search. The corresponding equilibrium geometrical parameters and vibrational spectral data were determined for each of the stable conformers (in water) by the geometry optimization and hessian calculations performed at the same level of theory using the polarized continuum model (PCM). The same calculations were repeated to determine the most energetically preferred dimer structure for the molecule and the associated geometry, force field and vibrational spectral data. The harmonic force constants obtained from these calculations were scaled by the Scaled Quantum Mechanical Force Field (SQM) method and then used in the calculation of the refined wavenumbers, potential energy distributions, IR and Raman intensities. These refined theoretical data, which confirm the zwitterion structure for anserine in the solid phase or aqueous solvents, revealed the remarkable effects of intermolecular hydrogen bonding on the structural properties and observed IR and Raman spectra of this molecule. (C) 2015 Elsevier B.V. All rights reserved.
Subject
Anserine
Vibrational Spectra
Hydrogen Bonding
SQM
Scaled Wavenumbers
Ab Initio
Raman Spectra
Force Fields
L-Histidine
Molecular Geometries
Carnosine
Density
Ir
Dipeptides
Complexes
URI
https://doi.org/10.1016/j.saa.2015.05.020
https://hdl.handle.net/11413/2026
Collections
  • Makaleler / Articles [293]
  • Pubmed Publications [149]
  • Scopus Publications [724]
  • WoS Publications [1016]

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Hakkında |Politika | Kütüphane | İletişim | Send Feedback | Admin

Istanbul Kültür University, Ataköy Campus E5 Karayolu Üzeri Bakırköy 34158, İstanbul / TURKEY
Copyright © İstanbul Kültür University

Creative Commons Lisansı
IKU Institutional Repository, Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

Designed by  UNIREPOS