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International Letters of Chemistry, Physics and Astronomy
Volume 64


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Structural and Vibrational Studies (FT-IR, FT-Raman) of Voglibose Using DFT Calculation

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In the present study, we report on the Molecular structure and infrared (IR) and FT-Raman studies of Voglibose (VGB) as well as by calculations based on the density functional theory (DFT) approach; utilizing B3LYP/6-31G(d,p) basis set. The targeted interpretation of the vibrational spectra intended to the basis of calculated potential energy distribution matrix (PED) utilizing VEDA4 program. Stability of the molecule arising from hyperconjugative interactions and charge delocalization was studied using natural bond orbital (NBO) analysis. The results show that change in electron density in the σ and π antibonding orbitals and E2 energies confirm the occurrence of intramolecular charge transfer within the molecule. The UV-Visible and NMR spectral analysis were reported by using TD-DFT and gauge GIAO approach respectively and their chemical shifts related to TMS were compared. The lowering of HOMO and LUMO energy gap appears to be the cause for its enhanced charge transfer interactions. Besides, molecular electrostatic potential (MEP) analysis was reported. Due to different potent biological properties, the molecular docking results are also reported.


International Letters of Chemistry, Physics and Astronomy (Volume 64)
R. Solaichamy and J. Karpagam, "Structural and Vibrational Studies (FT-IR, FT-Raman) of Voglibose Using DFT Calculation", International Letters of Chemistry, Physics and Astronomy, Vol. 64, pp. 45-62, 2016
Online since:
Feb 2016

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