2 mm Electron paramagnetic resonance studies of the new types of imidazoline nitroxide radicals

Sergei A. Dikanov; Victor I. Gulin; Yuri D. Tsvetkov; Igor A. Grigor'Ev

doi:10.1039/FT9908603201

2 mm Electron paramagnetic resonance studies of the new types of imidazoline nitroxide radicals

Sergei A. Dikanov, Victor I. Gulin, Yuri D. Tsvetkov, Igor A. Grigor'Ev

Research output: Contribution to journal › Article › peer-review

Abstract

The 2 mm band spectra have been obtained for imidazoline nitroxides, nitronyl and imino nitroxides, containing various substituents in different positions of a radical cycle in frozen toluene solutions. The spectra allowed the determination of all g tensor principal values and the A_zz component of the hyperfine interaction tensor with the nitrogen nucleus of 2 bonds on the lefthand side signN-̇O. The changes in the determined resonance parameters with the nature and position of substituents have been analysed. Additional hyperfine splittings induced by the ¹⁹F nucleus have been observed. Dimerization of imidazoline nitroxides, containing alcohol groups in the second position, has been observed in frozen toluene.

Original language	English (US)
Pages (from-to)	3201-3205
Number of pages	5
Journal	Journal of the Chemical Society, Faraday Transactions
Volume	86
Issue number	19
DOIs	https://doi.org/10.1039/FT9908603201
State	Published - Dec 1 1990
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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title = "2 mm Electron paramagnetic resonance studies of the new types of imidazoline nitroxide radicals",

abstract = "The 2 mm band spectra have been obtained for imidazoline nitroxides, nitronyl and imino nitroxides, containing various substituents in different positions of a radical cycle in frozen toluene solutions. The spectra allowed the determination of all g tensor principal values and the Azz component of the hyperfine interaction tensor with the nitrogen nucleus of 2 bonds on the lefthand side signN{\.-}O. The changes in the determined resonance parameters with the nature and position of substituents have been analysed. Additional hyperfine splittings induced by the 19F nucleus have been observed. Dimerization of imidazoline nitroxides, containing alcohol groups in the second position, has been observed in frozen toluene.",

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year = "1990",

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T1 - 2 mm Electron paramagnetic resonance studies of the new types of imidazoline nitroxide radicals

AU - Dikanov, Sergei A.

AU - Gulin, Victor I.

AU - Tsvetkov, Yuri D.

AU - Grigor'Ev, Igor A.

PY - 1990/12/1

Y1 - 1990/12/1

N2 - The 2 mm band spectra have been obtained for imidazoline nitroxides, nitronyl and imino nitroxides, containing various substituents in different positions of a radical cycle in frozen toluene solutions. The spectra allowed the determination of all g tensor principal values and the Azz component of the hyperfine interaction tensor with the nitrogen nucleus of 2 bonds on the lefthand side signN-̇O. The changes in the determined resonance parameters with the nature and position of substituents have been analysed. Additional hyperfine splittings induced by the 19F nucleus have been observed. Dimerization of imidazoline nitroxides, containing alcohol groups in the second position, has been observed in frozen toluene.

AB - The 2 mm band spectra have been obtained for imidazoline nitroxides, nitronyl and imino nitroxides, containing various substituents in different positions of a radical cycle in frozen toluene solutions. The spectra allowed the determination of all g tensor principal values and the Azz component of the hyperfine interaction tensor with the nitrogen nucleus of 2 bonds on the lefthand side signN-̇O. The changes in the determined resonance parameters with the nature and position of substituents have been analysed. Additional hyperfine splittings induced by the 19F nucleus have been observed. Dimerization of imidazoline nitroxides, containing alcohol groups in the second position, has been observed in frozen toluene.

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2 mm Electron paramagnetic resonance studies of the new types of imidazoline nitroxide radicals

Abstract

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