Primary quantum yields of ketyl radicals in photoreduction by amines. Abstraction of H from N

Journal Article · Wed Feb 13 00:00:00 EST 1980 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00524a034· OSTI ID:5269717

Inbar, S; Linschitz, H; Cohen, S G

Results of laser flash photolysis studies of the primary reaction of benzophenone triplet with aliphatic amines in benzene solution are reported. Quantum yield of formation of benzophenone ketyl radical was 0.9 - 1.0. Quantum yields for reduction of ketone also were determined for various amines, and the effects of tert-butyl alcohol on radical formation was investigated. Data indicated that H is not abstracted from -CH/sub 3/ but is abstracted efficiently from -NH/sub 2/. The very high quantum yields observed with tertiary and secondary amines were thought to imply exciplex formation, but lower quantum yields with primary amines were conditionally attributed to higher ionization potentials. (BLM)

• Research Organization: Brandeis Univ., Waltham, MA
• DOE Contract Number: EY-76-S-02-3117
• OSTI ID: 5269717
• Journal Information: J. Am. Chem. Soc.; (United States), Vol. 102:4
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMINES
PHOTOLYSIS
BENZOPHENONE
BENZENE
CHEMICAL REACTION YIELD
EXPERIMENTAL DATA
HYDROGEN TRANSFER
ISOLATED VALUES
LASER RADIATION
AROMATICS
CHEMICAL REACTIONS
DATA
DATA FORMS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
HYDROCARBONS
INFORMATION
KETONES
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
RADIATIONS
YIELDS
400500* - Photochemistry