Unimolecular Decomposition of Vibrationally Excited Ethane and Ethyl Radicals

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.1732347· OSTI ID:4829082

Heller, Carl A.; Gordon, Alvin S.

H or D atoms and ethyl radicals were concurrentiy produced by the mercury sensitized photolysis of mixtures of H₂ (or D₂) and diethyl ketone. Combination of an ethyl radical with a hydrogen atom produces vibrationally excited ethane molecules. Their rate of dissociation into methyl radicals relative to stabilization to ethane was studied as a function of pressure of ketone for both H and D. Similar studies were made of the mercury sensitized reactions of mixtures of D₂ or H₂ and ethylene, which permitted the measurement of the maximum rates of decomposition of excited ethyl radical and of excited ethane both as a function of pressure and of temperature. Resuits showed that vibrational energy is not used in overcoming the barrier for alkyl radical addition to an olefin bond.

• Research Organization: Naval Ordnance Test Station, Inyokern (China Lake), Calif.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-020408
• OSTI ID: 4829082
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 10 Vol. 36; ISSN JCPSA6; ISSN 0021-9606
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALKENES
ALKYL RADICALS
ATOMS
BARRIERS
BINDING ENERGY
DECOMPOSITION
DEUTERIUM
ETHANE
ETHYL RADICALS
EXCITATION
HYDROGEN
KETONES
MEASURED VALUES
MERCURY
MIXING
MOLECULES
OSCILLATIONS
PHOTOLYSIS
PRESSURE
PRODUCTION
STABILITY