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Molecular spectra and molecular structure of heterocyclic compounds. Infrared and near ultraviolet absorption spectra of pyridine N ‐oxide derivatives
Author(s) -
Ghersetti S.,
Maccagnani G.,
Mangini A.,
Montanari F.
Publication year - 1969
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570060615
Subject(s) - chemistry , ultraviolet , pyridine , infrared , infrared spectroscopy , solvent , photochemistry , spectral line , oxide , absorption spectroscopy , absorption (acoustics) , pyridine n oxide , hydrogen bond , ultraviolet visible spectroscopy , molecule , organic chemistry , physics , astronomy , optics , quantum mechanics , acoustics
The infrared and ultraviolet spectra of many pyridine N ‐oxide derivatives have been studied. Ultraviolet spectra show a strong solvent effect in going from aprotic to hydroxylic solvents due to strong hydrogen bonding. Values of δ H° for several systems CH 3 OH/XPyNO in tetra‐chloroethylene solution were evaluated by infrared techniques and a linear correlation δ H° vs. δ v OH has been found. Features of the infrared and ultraviolet characteristic absorption bands were also investigated.