Near ultraviolet absorption spectra of 3,4-dichloro- and 2,4-dibromofluorobenzene molecules in vapour state

¹ Department of Physics, University of Gorakhpur, Gorakhpur, 273001, India.
² Department of Physics, University of Gorakhpur, Gorakhpur, 273001 - Present address : Department of Physics, S.C. College Pallia, India.

Abstract

Vibrational analyses have been presented for the absorption bands of 3,4-dichloro- and 2,4-dibromofluorobenzene molecules photographed in the regions 2 910-2 560 A and 2 850-2 650 Å respectively. The following constants have been determined :[math]

The 0,0 band shifls and the vibrational modes of the fundamental frequencies are also discussed.

Résumé

L’analyse vibrationnelle des bandes d’absorption des dichioro-3,4 et dibromo-2,4 fluorobenzènes, photographiées respectivement entre 2 910-2 560 À et 2 850-2 650 Å, fournit les constantes du tableau ci-dessus. Discussion des modes vibrationnels fondamentaux et des déplacements de la bande O — O.