• Raman effect and hydrogen bonds - Part III. Acetic acid and its mixtures with water and phenol

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/015/04/0230-0237

    • Keywords

       

      Raman Spectrum; Carbon Tetrachloride; Pure State; Carbonyl Compound; Methyl Ethyl Ketone

    • Abstract

       

      Previous work on the Raman spectrum of acetic acid and of its solutions is critically reviewed and certain conclusions criticised. The Raman spectra of the acid in the pure state as well as in aqueous solutions at different dilutions have been reinvestigated and the results described. A comprehensive interpretation of the observations is offered. It is shown that the breaking up of the ring dimers of the acid is brought about by the formation of hydrated molecules, and that the formation of fresh hydrogen bonds between the acid and water molecules is the cause of this breakdown of the ring type into the open dimers and finally into hydrates of the monomeric form of the acid molecules. These ideas are supported by a study of the Raman spectrum of a mixture of acetic acid with a good acceptor solvent, phenol. Changes similar to those obtained in aqueous solutions are produced in the C=O frequencies of the phenol mixture also.

    • Author Affiliations

       

      G V L N Murty1 T R Seshadri1

      1. Department of Chemistry, Andhra University, Waltair
    • Dates

       
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