Separation of isotopes of carbon during the photolysis of dibenzylketone. Communication 1. Determination of the probabilities for the recombination of radical pairs

Journal Article · Sun Jul 10 04:00:00 EDT 1983 · Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF01167762· OSTI ID:6949513

Tarasov, V F; Buchachenko, A L

The photolysis of dibenzylketone (DBK) leads to the formation of dibenzyl (DB), carbon monoxide, and p-tolylbenzylketone (TBK). Previously the kinetics has been considered of isotopic enrichment induced by the magnetic isotope effect either in reversible or irreversible radical reactions. In the present work an analysis has been carried out of the kinetics of the isotopic enrichment of the products formed in the irreversible reaction which competes with the reversible reaction and the results of this analysis are applied to an actual case, the enrichment of TBK and DBK with /sup 13/C during the photolysis of DBK in hexadecyltrimethylammonium chloride or hexadecyltrimethylammonium bromide micelles. A technique for the measurement of the probabilities for the recombination of the radical pairs has been proposed on the basis of the results of the kinetic analysis. Values have been obtained for the probabilities for the recombination of triplet state radical pairs which are formed during the photolysis of dibenzylketone in a micellar solution. The photolysis conditions in micelles are close to the conditions which are realized in a microreactor with reflecting walls.

• Research Organization: Academy of Sciences of the USSR
• OSTI ID: 6949513
• Journal Information: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Journal Name: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States) Vol. 32:1; ISSN BACCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400303* -- Organic Chemistry-- Isotope Exchange & Isotope Separation-- (-1987)
CARBON 13
CARBON ISOTOPES
CHEMICAL REACTIONS
DECOMPOSITION
EVEN-ODD NUCLEI
ISOTOPE SEPARATION
ISOTOPES
KETONES
LIGHT NUCLEI
MICELLAR SYSTEMS
NUCLEI
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADICALS
RECOMBINATION
SEPARATION PROCESSES
STABLE ISOTOPES