Resonance Raman study of the A-band short-time photodissociation dynamics of 2-iodothiophene.
Resonance Raman spectra were obtained for 2-iodothiophene in cyclohexane solution with excitation wavelengths in resonance with the A-band absorption spectrum. These resonance Raman spectra indicate that the Franck-Condon region photodissociation dynamics have multidimensional character with motion mainly along the nominal symmetric C=C stretch of the thienyl ring and accompanied by a moderate amount of motion along the nominal symmetric CSC stretch, the nominal antisymmetric CSC stretch, and the nominal C-I stretch vibrational modes. A preliminary resonance Raman intensity analysis was done for the A-band resonance Raman spectra of 2-iodothiophene. These results were compared to previous results for related iodobenzene and iodoalkane molecules that also contain a C-I chromophore and the similarities and differences in the short-time photodissociation dynamics were discussed.
Zhu
Hai-Lin
HL
Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, People's Republic of China 310018.
Liu
Jian
J
Zheng
Xuming
X
Phillips
David Lee
DL