L. Shoute, D. Pan, D. Phillips
Jun 26, 1998
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Journal
Chemical Physics Letters
Abstract
Abstract We have obtained nanosecond time-resolved resonance Raman spectra of the T 1 →T n transition of 2-bromonaphthalene in methanol solvent. The transient resonance Raman spectra indicate that there are mostly structural changes in the C–C stretch ν 5a vibrational coordinate along with a smaller amount of change in the C–Br stretch and C–Br in plane deformation coordinates. This suggests that the T 1 →T n transition of 2-bromonaphthalene does not initially excite a directly dissociative triplet state and a predissociative mechanism is probably responsible for the efficient T n state C–Br bond cleavage found in previous photochemistry studies.