Role of biradical intermediates in the photochemistry of o-methylacetophenone

Journal Article · Wed Nov 09 04:00:00 EST 1977 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00465a055· OSTI ID:5307369

Small, Jr, R D; Scaiano, J C

A laser flash photolysis technique was used to examine the behavior of the biradical intermediate in the photoenolization of o-methylacetophenone. The results showed that the transient produced by intramolecular hydrogen abstraction has a lifetime of 300 nsec. It reacts in the electron transfer to paraquat dications in the same manner as the biradicals produced in the Norrish type II reactions. The same biradical is apparently produced from both triplet states as required by Wagner's mechanism. The biradical interacts with oxygen at nearly diffusion controlled rates. (JSR)

• Research Organization: Univ. of Notre Dame, IN
• OSTI ID: 5307369
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 99:23; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CHARGE EXCHANGE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
DECOMPOSITION
ELEMENTS
FLUIDS
KETONES
KINETICS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADICALS
REACTION KINETICS