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

Journal Article · Wed Feb 13 04:00:00 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), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 102:4; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

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