Effects of the medium in NMR Communication 5. Influence of the solvent on the magnetic nonequivalence of the methylene protons in komeric halobutylamines
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The PMR spectra of solutions of hydrohalides of isomeric halobutylamines in trifluoroacetic acid and pyridine were studied.
The terminal methylene protons, found in theα- andΒ-positions to the ammonium groups, may possess magnetic nonequivalence, which increases from solutions in trifluoroacetic acid to solutions in pyridine.
KeywordsMethylene Ammonium Pyridine Trifluoroacetic Acid Methylene Proton
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