Rate constants and isotope effects for the reaction of H-atom abstraction from RH substrates by PINO radicals
- Авторы: Opeida I.1, Litvinov Y.1, Kushch O.1, Kompanets M.1, Shendrik A.2, Matvienko A.3, Novokhatko A.1
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Учреждения:
- Department of the Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
- Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
- Department of Chemistry
- Выпуск: Том 90, № 11 (2016)
- Страницы: 2142-2149
- Раздел: Chemical Kinetics and Catalysis
- URL: https://journals.rcsi.science/0036-0244/article/view/168921
- DOI: https://doi.org/10.1134/S0036024416110194
- ID: 168921
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Аннотация
The kinetics of the reactions of hydrogen atom abstraction from the C–H bonds of substrates of different structures by phthalimide-N-oxyl radicals is studied. The rate constants of this reaction are measured and the kinetic isotope effects are determined. It is shown that in addition to the thermodynamic factor, Coulomb forces and donor–acceptor interactions affect the reaction between phthalimide-N-oxyl radicals and substrate molecules, altering the shape of the transition state. This favors the tunneling of hydrogen atoms and leads to a substantial reduction in the activation energy of the process.
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Об авторах
I. Opeida
Department of the Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
Автор, ответственный за переписку.
Email: opeida_i@i.ua
Украина, Lviv, 79053
Yu. Litvinov
Department of the Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
Email: opeida_i@i.ua
Украина, Lviv, 79053
O. Kushch
Department of the Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
Email: opeida_i@i.ua
Украина, Lviv, 79053
M. Kompanets
Department of the Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
Email: opeida_i@i.ua
Украина, Lviv, 79053
A. Shendrik
Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
Email: opeida_i@i.ua
Украина, Kyiv, 02660
A. Matvienko
Department of Chemistry
Email: opeida_i@i.ua
Украина, Vinnytsia, 21021
A. Novokhatko
Department of the Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry
Email: opeida_i@i.ua
Украина, Lviv, 79053