Mechanism of product formation during the photolysis of ketene

Journal Article · Thu Aug 09 00:00:00 EDT 1979 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100479a005· OSTI ID:5507879

Russell, R L; Rowland, F S

The photolysis of ketene has been studied with both /sup 14/CH/sub 2/CO and CHTCO, and a new mechanism is suggested for the reactions of triplet methylene in pure ketene. The isotopic experiments are consistent with the set of reactions, (6) plus (8) to (11), /sup 3/CH/sub 2/ + /sup 3/CH/sub 2/ ..-->.. C/sub 2/H/sub 2/ + 2H (8), H + CH/sub 2/CO ..-->.. CH/sub 3/ + CO (9), /sup 3/CH/sub 2/ + CH/sub 3/ ..-->.. C/sub 2/H/sub 4/ + H (10,11), CH/sub 3/ + CH/sub 3/ ..-->.. C/sub 2/H/sub 6/ (6); and not with the earlier proposal of (3) to (6), /sup 3/CH/sub 2/ + CH/sub 2/CO ..-->.. CH/sub 3/ + CHCO (3), CHCO + CHCO ..-->.. C/sub 2/H/sub 2/ + 2CO (4), CH/sub 3/ + CHCO ..-->.. C/sub 2/H/sub 4/ + CO (5). The formation of atomic hydrogen rather than molecular hydrogen in (8) has important consequences for interpretation of the flash photolysis of ketene.

• Research Organization: Univ. of California, Irvine, CA (United States)
• DOE Contract Number: E(04-3)-34
• OSTI ID: 5507879
• Journal Information: J. Phys. Chem.; (United States), Vol. 83:16
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON 14
ISOTOPE EFFECTS
KETENES
PHOTOLYSIS
METHYLENE RADICALS
REACTION KINETICS
TRITIUM
EXPERIMENTAL DATA
ISOLATED VALUES
LABELLED COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON ISOTOPES
CHEMICAL REACTIONS
DATA
DATA FORMS
DECOMPOSITION
EVEN-EVEN NUCLEI
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
KINETICS
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
RADICALS
RADIOISOTOPES
YEARS LIVING RADIOISOTOPES
400500* - Photochemistry
400302 - Organic Chemistry- Isotope Effects- (-1987)