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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of General Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of General Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал общей химии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-460X</issn><issn publication-format="electronic">3034-5596</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">676654</article-id><article-id pub-id-type="doi">10.31857/S0044460X24100031</article-id><article-id pub-id-type="edn">RFKUZS</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Competing mechanisms for the formation of chemical nuclear polarization effects during photolysis of 1-(4-methylphenyl)-3-phenylpropane-2-thione in different solvents</article-title><trans-title-group xml:lang="ru"><trans-title>Конкурирующие механизмы формирования эффектов химической поляризации ядер при фотолизе 1-(4-метилфенил)-3-фенилпропан-2-тиона в различных растворителях</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Porkhun</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Порхун</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>arisjulia@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zavyalov</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Завьялов</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>arisjulia@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Savelyev</surname><given-names>Е. N.</given-names></name><name xml:lang="ru"><surname>Савельев</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>arisjulia@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bogdanova</surname><given-names>Yu. V.</given-names></name><name xml:lang="ru"><surname>Богданова</surname><given-names>Ю. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>arisjulia@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuznetsova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Кузнецова</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>arisjulia@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Volgograd State Technical University</institution></aff><aff><institution xml:lang="ru">Волгоградский государственный технический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2024</year></pub-date><volume>94</volume><issue>10</issue><fpage>1032</fpage><lpage>1042</lpage><history><date date-type="received" iso-8601-date="2025-03-03"><day>03</day><month>03</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0044-460X/article/view/676654">https://transsyst.ru/0044-460X/article/view/676654</self-uri><abstract xml:lang="en"><p>According to the Kloss–Kaptein–Oosterhoff model of radical pairs, the formation of chemical nuclear polarization occurs at the stage of recombination of radicals during singlet-triplet transitions S–T<sub>0</sub> in radical pairs or according to the triplet mechanism during electron-nuclear cross-relaxation transitions. In this work, the competition between the formation of the nuclear polarization mechanism during the photolysis of CH<sub>3</sub>C<sub>6</sub>H<sub>4</sub>CH<sub>2</sub>CSCH<sub>2</sub>Ph thione in various solvents was experimentally proven.</p></abstract><trans-abstract xml:lang="ru"><p>Согласно модели радикальных пар Клосса–Каптейна–Остерхоффа формирование химической поляризации ядер происходит на стадии рекомбинации радикалов при синглет-триплетных переходах S–Т<sub>0</sub> в радикальных парах или, в очень редких случаях, по триплетному механизму при электрон-ядерных кросс-релаксационных переходах. Экспериментально доказана конкуренция формирования механизма ядерной поляризации при фотолизе тиона СН<sub>3</sub>С<sub>6</sub>Н<sub>4</sub>СН<sub>2</sub>СSСН<sub>2</sub>Ph в различных растворителях.</p></trans-abstract><kwd-group xml:lang="en"><kwd>photoreactions</kwd><kwd>thioketones</kwd><kwd>formation of chemical nuclear polarization effects</kwd><kwd>elementary acts of reactions</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>фотореакция</kwd><kwd>тиокетон</kwd><kwd>формирование эффекта химической поляризации ядер</kwd><kwd>элементарный акт реакции</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Бучаченко А.Л., Сагдеев Р.З., Салихов К.М. Магнитные и спиновые эффекты в химических реакциях. Новосибирск: Наука, 1978. С. 296.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Химия органических соединений серы. Общие вопросы / Под ред. Л.И. Беленького. 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