Abstract
Resonance Raman spectra were obtained for nitrobenzene in cyclohexane solution with excitation wavelengths in resonance with the charge-transfer (CT) band absorption spectrum. These spectra indicate that the Franck-Condon region photodissociation dynamics have multidimensional character with motion mainly along the nominal NO2 symmetric stretch mode (nu 11), the nominal benzene ring stretch mode (nu 7), accompanied by a moderate degree of motion along the nominal ONO symmetry bend/benzene ring stretch mode (nu 23), the nominal C-N stretch/benzene ring breathing mode (nu 16), the nominal CCC bending mode (nu 20) and the nominal CCH in-plane bending mode (nu 14). A preliminary resonance Raman intensity analysis was done and the results for nitrobenzene were compared to previously reported results for several nitroalkanes.
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