Study of Methylbenzylthione Photoreaction Using Chemically Induced Nuclear Polarization

The mechanisms of photoreactions of methylbenzylthione PhCH 2 CSCH 3 ( 1 ) were studied by NMR spectroscopy with chemically induced dynamic nuclear polarization (CIDNP). It was established from the sign of 13 C and 1 H CIDNP that polarization occurs during the decay of excited thioketones in the tri...

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Bibliographic Details
Published inRussian Journal of Physical Chemistry A Vol. 96; no. 11; pp. 2547 - 2550
Main Authors Porkhun, V. I., Kuznetsova, N. A., Podoprigora, A. G., Gonik, I. L.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.11.2022
Springer Nature B.V
Subjects
Atomic energy levels
Chemistry
Chemistry and Materials Science
NMR spectroscopy
Photochemistry and Magnetochemistry
Photolysis
Physical Chemistry
Polarization
radical reactions
NMR spectroscopy
chemically induced dynamic nuclear polarization
photoreactions of thiones
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Summary:The mechanisms of photoreactions of methylbenzylthione PhCH 2 CSCH 3 ( 1 ) were studied by NMR spectroscopy with chemically induced dynamic nuclear polarization (CIDNP). It was established from the sign of 13 C and 1 H CIDNP that polarization occurs during the decay of excited thioketones in the triplet state. The elementary acts of the reaction and intermediate compounds were proved. It was found that photolysis of thione ( 1 ) is a Norrish type I reaction with predominant recombination in the radical pair and regeneration of the starting thioketone.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024422110243