Abstract
A determination of the
infrared spectra of the solid hydrochlorides of methylformamide and
dimethylformamide and of the Raman spectra of their aqueous solutions showed
that certain spectral features change with the medium used. The infrared
spectra of the two amides in concentrated and in aqueous sulphuric acid, and in
concentrated hydrochloric acid (HCl and DCl), are
consistent with the existence of two amide/acid reaction products for each
amide: one (certainly ionic) form predominates in sulphuric acid solutions; a
second form, of unknown structure, is present in the solid hydrochlorides, and
in hydrochloric acid the two forms coexist in equilibrium.
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8 articles.
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