ELECTRONIC SPECTRA AND STRUCTURE OF METHYL DERIVATIVES OF 4-NITROPYRIDINE N-OXIDE

Abstract

The UV spectra of seven methyl derivatives of 4-nitropyridine N-oxide in ethanol have been examined. The electronic spectra were calculated by a modified INDO method. Transition energies, intensities and assignments were compared with UV spectra. Spectroscopic manifestations of intramolecular interaction indicate that methyl groups modify the electronic interaction between the N-oxide and NO₂ groups mainly through a steric strain.

Also published in Chemistry of Heterocyclic Compounds, 2000, 36 (6), pp 686-692

http://link.springer.com/article/10.1007/BF02297677