Journal
JOURNAL OF RAMAN SPECTROSCOPY
Volume 42, Issue 8, Pages 1670-1681Publisher
WILEY
DOI: 10.1002/jrs.2909
Keywords
acetic acid; low-temperature matrices; Raman spectra; hydrogen bond; DFT calculations
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Funding
- CSC - IT Center for Science Ltd, Finland
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Acetic acid (AA) monomer and its dimers were studied by means of Raman spectroscopy combined with the matrix isolation technique. All fundamental bands of CH3COOH monomer were identified, including the CH3 torsional mode. Additionally, three overtone or combination modes were observed as a result of their enhanced intensities by Fermi resonance (FR). Twenty bands of the cyclic dimer (C-2h) were identified and assigned, among which appear all intermolecular modes. Bands due to two different higher energy forms of the dimer were also identified. The experimental assignments are supported by ab initio calculations. Copyright (C) 2011 John Wiley & Sons, Ltd.
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