High overtones investigation of non-equivalent CH bonds in pyridine and 2,6-lutidine by thermal lensing spectroscopy

Year: 1990

Authors: Bini R., Foggi P., Guido Della Valle R.

Autors Affiliation: Laboratorio di Spettroscopia Moleculare, Dipartimento di Chimica Universita\’ di Firenze, 50121 Firenze, Italy; Dipartimento di Chimica e Fisica Universita\’ di Venezia, Calle Larga S. Marta, Venezia, Italy

Abstract: The 4th and 5th 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.

Journal/Review: JOURNAL OF MOLECULAR STRUCTURE

Volume: 218 (C)      Pages from: 117  to: 122

KeyWords: Pyridine; 2,6-Dimethylpyridine
DOI: 10.1016/0022-2860(90)80253-G

Citations: 1
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