Electronic spectra of 1-methoxy- and 1-ethoxynaphthalene in the vapour phase and in ethanol rigid glass at 90°K

Abstract

The electronic spectra of 1-methoxy- and 1-ethoxynaphthalene in the vapour state and in alcohol rigid glass at 90°K have been studied. The vapour spectra of both the compounds show two distinct systems of absorption bands in the 2700–2900 Å and 2950–3250 Å regions. The spectra consist of strong O, O bands and several ground state and excited state vibrational modes are found to be excited. Probable nature of the perturbing vibrations and their probable correlation with corresponding modes of naphthalene have been discussed. The rigid glass spectra at 90°K are essentially similar to the vapour spectra.