Photodissociation dynamics of benzoic acid

Journal Article · Thu Jan 07 04:00:00 EST 2010 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.3274624· OSTI ID:21559869

Dyakov, Yuri A; Bagchi, Arnab; Lee, Yuan T; Ni, Chi-Kung ^[1]

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1. Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10617, Taiwan (China)

The photodissociation of benzoic acid at 193 and 248 nm was investigated using multimass ion imaging techniques. Three dissociation channels were observed at 193 nm: (1) C{sub 6}H{sub 5}COOH{yields}C{sub 6}H{sub 5}+COOH, (2) C{sub 6}H{sub 5}COOH{yields}C{sub 6}H{sub 5}CO+OH, and (3) C{sub 6}H{sub 5}COOH{yields}C{sub 6}H{sub 6}+CO{sub 2}. Only channels, (2) and (3), were observed at 248 nm. Comparisons of the ion intensities and photofragment translational energy distributions with the potential energies obtained from ab initio calculations and the branching ratios obtained from the Rice-Ramsperger-Kassel-Marcus theory suggest that the dissociation occurs on many electronic states.

• OSTI ID: 21559869
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 1 Vol. 132; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
BENZOIC ACID
BRANCHING RATIO
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLIC ACIDS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DECOMPOSITION
DIMENSIONLESS NUMBERS
DISSOCIATION
ENERGY
ENERGY SPECTRA
EVALUATION
IONS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
POTENTIAL ENERGY
SPECTRA