Abstract
In this study, the structural and vibrational properties of Meldrum's
acid derivative
5-(5-Ethyl-1,3,4-thiadiazol-2-ylamino)methylene-2,2-dimethyl-1,3-dioxane
-4,6-dione, C11H13N3O4S were studied combining experimental techniques
such as Raman and FT-IR spectroscopy and density functional theory (DFT)
calculations. The Raman and FT-IR spectra were recorded at room
conditions in the regions from 80 to 3400 cm(-1) and 400 to 4000 cm(-1),
respectively. Vibrational wavenumbers were predicted using DFT
calculations with the hybrid functional B3LYP and basis set 6-31G(d,p).
A comparison between experimental and theoretical data is provided for
the Raman and FT-IR spectra. The descriptions of the normal modes were
carried by means of potential energy distribution (PED). (C) 2015
Elsevier B.V. All rights reserved.
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