Observation of high vibrational excitation in HCN molecules produced from 193 nm photolysis of 1,3,5-triazine

Journal Article · Thu Nov 15 04:00:00 EST 1984 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.447422· OSTI ID:6173948

Goates, S R; Chu, J O; Flynn, G W

Infrared emission from the ..nu../sub 2/ bending mode and ..nu../sub 3/ C--H stretching mode of HCN have been observed following 193 nm pulsed excimer laser photolysis of 1,3,5-triazine. Using a simple harmonic oscillator analysis, the number of ..nu../sub 2/ bending quanta produced in HCN from photolysis of sym-triazine was found to be 70 times larger than the number of ..nu../sub 3/ C--H stretching quanta. The combination of a high density of bending vibrational states in HCN and favorable geometry changes which occur in going from 1,3,5-triazine to three HCN molecules, appear to give an unusually pure distribution which maximizes vibrational energy in the HCN bending mode.

• Research Organization: Department of Chemistry and Columbia Radiation Laboratory, Columbia University, New York, New York 10027
• DOE Contract Number: AC02-78ER04940
• OSTI ID: 6173948
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 81:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AZINES
CHEMICAL REACTIONS
CYANIDES
DECOMPOSITION
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUORESCENCE
HETEROCYCLIC COMPOUNDS
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INFRARED SPECTRA
INORGANIC ACIDS
LASER RADIATION
LUMINESCENCE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OSCILLATION MODES
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
SPECTRA
TRIAZINES
VIBRATIONAL STATES