Spectrochimica Acta Part A: Molecular Spectroscopy
The normal coordinate analysis of urea, thiourea, and thier isotopic analogues in the solid phase and in solution
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A Raman and infrared study of 1-furoyl-3-monosubstituted and 3,3-disubstituted thioureas
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2004, Journal of Non-Crystalline SolidsCitation Excerpt :IR spectroscopy represents an efficient method to characterize the strength of hydrogen bonding and hydrophobic interactions between alkylene chains. We employed mainly this technique, which has been widely used to study urea crystals [12–14] for detecting the hydrogen-bonds in these materials. The normal modes associated with the amide groups, namely NH stretching mode, ν(NH), on one hand, CO stretching vibration, (ν(CO) or amide 1), and N–H in-plane bending (δ(NH) or amide 2) on the other hand, have been principally studied.
Comparative voltammetric and FTIRRAS study on the electro-oxidation of thiourea and methyl-thioureas on platinum in aqueous acid solutions
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2004, Chemical Physics LettersCitation Excerpt :This upshift also decreases as the potential becomes more negative. The band assignments whose intensities will be used in elucidating the bond polarizability derivatives are summarized in Table 1 based on the literatures [18–21] and our normal mode analysis. The calculated force constants of the internal coordinates under various applied potentials are presented in Table 2.