Photochemistry of O/sub 3//HNCO mixtures

Journal Article · Thu Oct 06 00:00:00 EDT 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100331a011· OSTI ID:5992873

Ongstad, A P; Liu, X; Coombe, R D

Pulsed photolysis of gaseous O/sub 3//HNCO mixtures at 249 nm produces emission from the NH A/sup 3/II ..-->.. X/sup 3/..sigma../sup -/ transition near 336 nm. The data suggest that the excited NH is produced by the reaction O(/sup 1/D) + HNCO ..-->.. NH + CO/sub 2/. The branching fraction to the alternate products OH + NCO is less than 0.1. This mechanism is quite different from that of the analogous O(/sup 1/D) + HN/sub 3/, NH(/sup 1/..delta..) + HN/sub 3/, and NH(/sup 1/..delta..) + HNCO reactions. From the time profile of the NH emission, the rate constant for O(/sup 1/D) + HNCO is determined to be (4.6 /plus minus/ 0.4) /times/ 10/sup /minus/11/ cm/sup 3/s/sup /minus/1/.

• Research Organization: Univ. of Denver, CO (USA)
• OSTI ID: 5992873
• Journal Information: J. Phys. Chem.; (United States), Vol. 92:20
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ISOCYANIC ACID
PHOTOLYSIS
OZONE
ABSORPTION SPECTROSCOPY
CHEMICAL REACTION KINETICS
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
PHOTOCHEMICAL REACTIONS
PULSE TECHNIQUES
ULTRAVIOLET SPECTRA
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
DATA
DECOMPOSITION
INFORMATION
KINETICS
MEASURING INSTRUMENTS
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
REACTION KINETICS
SPECTRA
SPECTROMETERS
SPECTROSCOPY
400500* - Photochemistry