Resonance Raman intensity analysis of the excited state proton transfer dynamics of 2-nitrophenol in the charge-transfer band absorption
- Department of Chemistry and State Key Laboratory of ATMMT (MOE), Zhejiang Sci-Tech University, Hangzhou 310018 (China)
Resonance Raman spectra were obtained for 2-nitrophenol in cyclohexane solution with excitation wavelengths in resonance with the charge-transfer (CT) proton transfer band absorption. These spectra indicate that the Franck-Condon region photodissociation dynamics have multidimensional character with motion along more than 15 normal modes: the nominal CCH bend+CC stretch {nu}{sub 12} (1326 cm{sup -1}), the nominal CCC bend {nu}{sub 23} (564 cm{sup -1}), the nominal CO stretch+NO stretch+CC stretch {nu}{sub 14} (1250 cm{sup -1}), the nominal CCH bend+CC stretch+COH bend {nu}{sub 15} (1190 cm{sup -1}); the nominal CCH bend+CC stretch {nu}{sub 17} (1134 cm{sup -1}), the nominal CCC bend+CC stretch {nu}{sub 22} (669 cm{sup -1}), the nominal CCN bend {nu}{sub 27} (290 cm{sup -1}), the nominal NO{sub 2} bend+CC stretch {nu}{sub 21} (820 cm{sup -1}), the nominal CCO bend+CNO bend {nu}{sub 25} (428 cm{sup -1}), the nominal CC stretch {nu}{sub 7} (1590 cm{sup -1}), the nominal NO stretch {nu}{sub 8} (1538 cm{sup -1}), the nominal CCC bend+NO{sub 2} bend {nu}{sub 20} (870 cm{sup -1}), the nominal CC stretch {nu}{sub 6} (1617 cm{sup -1}), the nominal COH bend+CC stretch {nu}{sub 11} (1382 cm{sup -1}), nominal CCH bend+CC stretch {nu}{sub 9} (1472 cm{sup -1}). A preliminary resonance Raman intensity analysis was done and the results for 2-nitrophenol were compared to previously reported results for nitrobenzene, p-nitroaniline, and 2-hydroxyacetophenone. The authors briefly discuss the differences and similarities in the CT-band absorption excitation of 2-nitrophenol relative to those of nitrobenzene, p-nitroaniline, and 2-hydroxyacetophenone.
- OSTI ID:
- 20864352
- Journal Information:
- Journal of Chemical Physics, Vol. 125, Issue 21; Other Information: DOI: 10.1063/1.2404668; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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