Raman Intensity of the v C=O Band in Hydrogen Bonded Complexes Involving Ethylformate and Phenol Derivatives

The hydrogen bonded complexes between carbonyl bases and hydroxylic derivatives have been extensively studied by infrared spectrometry; by comparison very little Raman data have been reported in the literature. Some qualitative measurements on the v _C=O band of acetone dissolved in water-tetrachloride mixtures have been performed by Singurel¹. Quantitative data on the absolute Raman intensity have been obtained for complexes involving cyclohexanone², acetone, acetophenone³ and methylacetate⁴. For these systems, hydrogen bond formation brings about a moderate intensity enhancement of the v _C=O band. In this work the Raman intensity of the v _C=O band of ethylformate (EtFo) complexed with phenol derivatives is investigated.