Abstract
The 4 th and 5 th overtones of aryl and methyl CH stretching of pyridine and 2,6-lutidine in the liquid phase have been studied using thermal blooming effect. By comparison of the two liquids spectra it is possible to assign the different frequencies to aryl CH stretching affected by inductive and mesomeric effects of N atom in the ring. Evidences of conformationally non-equivalent CH bonds in the methyl groups in 2,6-lutidine are apparent.
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