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남상일,민은선,정영미,이무상,Nam, Sang Il,Min, Eun Seon,Jeong, Yeong Mi,Lee, Mu Sang Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.9
The carbonyl stretching vibration, νC=O of 2-cyclohexene-1-one, is in Fermi resonance with a combination tone. The amount of Fermi resonance interaction between these two modes is dependent upon the amount of solute/solvent interaction due to hyd rogen bonding between the carbonyl oxygen and the solvent proton. The corrected νC=O frequency of 2-cyclohexene-1-one occurs at a lower frequency than the observed νC=O mode of cyclohexanone, possibly caused by expanded conjugation effects. The carbonyl stretching modes of cyclic ketones were also affected by interaction with the ROH/CCl4 mixed solvent system.