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• W4366550898 startingPage "7555" @default.
• W4366550898 abstract "The influence of magnetic fields on chemical reactions, including biological ones, has been and still is a topical subject in the field of scientific research. Experimentally discovered and theoretically substantiated magnetic and spin effects in chemical radical reactions form the basis of research in the field of spin chemistry. In the present work, the effect of a magnetic field on the rate constant of the bimolecular spin-selective recombination of radicals in the bulk of a solution is considered theoretically for the first time, taking into account the hyperfine interaction of radical spins with their magnetic nuclei. In addition, the paramagnetic relaxation of unpaired spins of the radicals and the non-equality of their g-factors that also influence the recombination process are taken into account. It is found that the reaction rate constant can vary in magnetic field from a few to half a dozen percent, depending on the relative diffusion coefficient of radicals, which is determined by the solution viscosity. It is shown that the consideration of hyperfine interactions gives rise to the presence of resonances in the dependence of the rate constant on the magnetic field. The magnitudes of the magnetic fields of these resonances are determined by the hyperfine coupling constants and difference in the g-factors of the recombining radicals. Analytical expressions for the reaction rate constant of the bulk recombination for magnetic fields larger than hfi (hyperfine interaction) constants are obtained. In general, it is shown for the first time that accounting for hyperfine interactions of radical spins with magnetic nuclei significantly affects the dependence of the reaction rate constant of the bulk radical recombination on the magnetic field." @default.
• W4366550898 created "2023-04-22" @default.
• W4366550898 creator A5018653094 @default.
• W4366550898 creator A5051776630 @default.
• W4366550898 date "2023-04-20" @default.
• W4366550898 modified "2023-09-25" @default.
• W4366550898 title "Magnetic Field Effect in Bimolecular Rate Constant of Radical Recombination" @default.
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• W4366550898 doi "https://doi.org/10.3390/ijms24087555" @default.
• W4366550898 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37108719" @default.
• W4366550898 hasPublicationYear "2023" @default.
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