Raman and FTIR spectra of pure ethanol and its proton-donor and proton-acceptor solvents were studied using experiments and ab-initio (DFT) calculations. Spectral bands related to C-H and O-H stretching vibrations of pure ethanol are complex and consist of at least two bands, and these bands belong to different aggregates of ethanol. According to experiments and ab-initio calculations, when ethanol is dissolved in water, the Raman and FTIR spectra related to C-H and O-H stretching vibration shifted towards higher frequency as the concentration of ethanol decreased. This is due to hydrogen bonds in the form of C-H···O (non-classical) and O-H···O. Such shifts take place due to weak interactions between the methyl group in ethanol and water.
| Mualliflar | Jumabaev, A., Absanov, A.A., Hushvaktov, H.A., Xudaykulov, B.B. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2024-04-08 |
| Jild | 26 |
| Son | 1 |
| Til | Ingliz |
| DOI | 10.52304/.v26i1.492 |
DOI: 10.52304/.v26i1.492 · Maqolaning asl sahifasi
комбинационное рассеяние света, FTIR, неэмпирический расчет, этанол, водные растворы, водородные связи, красное смещение, синее смещение, Raman, FTIR spectra, ab-initio calculations, ethanol, aqueous solutions, hydrogen bonding, red-shift, blue-shift
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