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Free radical studies by resonance Raman spectroscopy: Photochemically generated para ‐substituted aniline cation radicals
Author(s) -
Williams K. P. J.,
Hester R. E.
Publication year - 1981
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250100132
Subject(s) - raman spectroscopy , radical , chemistry , resonance raman spectroscopy , aniline , photochemistry , photodissociation , resonance (particle physics) , spectroscopy , absorption spectroscopy , organic chemistry , physics , particle physics , quantum mechanics , optics
The free radical cations of a series of para ‐ substituted anilines have been formed by UV photolysis of the neutral parent compounds trapped in clear glassy ethanol matrices at 77 K. The radicals all have intense visible absorption bands which facilitate excitation of their resonance Raman spectra. These Raman spectra have been assigned and interpreted in terms of structure changes from the corresponding parents. The changes are shown to correlate well with the appropriate Hammett σ p function values for the para ‐substituents.