Spin trapping of the azide radical with nitroso compounds

1982 ◽  
Vol 60 (12) ◽  
pp. 1597-1597 ◽  
Author(s):  
Walter Kremers ◽  
Grant W Koroll ◽  
Ajit Singh
Keyword(s):  
Electron Spin Resonance ◽  
Aqueous Solutions ◽  
Hydroxyl Radicals ◽  
Electron Spin ◽  
Esr Spectra ◽  
Spin Trapping ◽  
Nitroso Compounds ◽  
Spin Traps ◽  
Spin Resonance

Azide radicals (N3·) are formed in aqueous solutions by the reaction of hydroxyl radicals (·OH) with azide anions (N3aq−). Azide radicals have been spin trapped with three nitroso spin traps: nitrosodurene (ND), 2,6-dideutero-3,5-dibromo-4-nitrosobenzene sulfonate (DDNBS), and 2-methyl-2-nitrosopropane (MNP). The electron spin resonance (esr) spectra show the presence of two molecules of the spin traps in the spin-trapped species.

Electron spin resonance study of spin-trapped azide radicals in aqueous solutions

1980 ◽  
Vol 58 (15) ◽  
pp. 1592-1595 ◽  
Author(s):  
Walter Kremers ◽  
Ajit Singh
Keyword(s):  
Electron Spin Resonance ◽  
Aqueous Solutions ◽  
Hydroxyl Radicals ◽  
Electron Spin ◽  
Sodium Azide ◽  
Electron Spin Resonance Study ◽  
Spin Traps ◽  
Spin Resonance ◽  
Hyperfine Splittings ◽  
Spin Resonance Study

Organic spin traps have been used to study the formation of azide radicals during the reaction of azide anions with hydroxyl radicals. The azide radicals have been successfully trapped with three spin traps: 5,5-dimethylpyrroline-1-oxide (DMPO), phenyl-N-tert-bulyl nitrone (PBN), and 4-pyridyl-N-tert-butyl nitrone (PyBN). The azide radicals produced from 15N sodium azide have also been trapped. The hyperfine splittings of the resulting radicals have been determined.

Spin trapping of radicals formed during radiolysis of aqueous solutions. Direct electron spin resonance observations

1976 ◽  
Vol 54 (2) ◽  
pp. 275-279 ◽  
Author(s):  
Frederick Peter Sargent ◽  
Edward Michael Gardy
Keyword(s):  
Electron Spin Resonance ◽  
Aqueous Solutions ◽  
Electron Spin ◽  
Direct Observation ◽  
Electron Accelerator ◽  
Esr Spectra ◽  
Spin Trapping ◽  
Spin Resonance

It is shown that esolv, H•, and OH formed by the radiolysis of water by 3 MeV electrons are trapped by nitroso and nitrone compounds to give nitroxides with well defined esr spectra. Three spin trapping agents were used, nitroso-t-butane, phenyl-t-butyl nitrone, and 5,5′-dimethyl pyrroline-1-oxide. The latter was shown to be an excellent compound for these studies. Complications due to the instability of some of the nitroxides were overcome by coupling the electron accelerator to the esr spectrometer to permit direct observation of the spectra.

scholarly journals Simulation of isotropic electron spin resonance spectra: a transportable basic program

1982 ◽  
Vol 60 (12) ◽  
pp. 1542-1548 ◽  
Author(s):  
Uwe M Oehler ◽  
Edward G Janzen
Keyword(s):  
Electron Spin Resonance ◽  
Computer Program ◽  
Electron Spin ◽  
Esr Spectra ◽  
Spin Trapping ◽  
Basic Program ◽  
Spin Resonance ◽  
Restricted Environment

A computer program written in BASIC is presented for the simulation of isotropic esr spectra using a microprocessor. Since BASIC is the most common microprocessor language, this program can easily be adapted to most microprocessors. Through the use of more efficient methods the capabilities of much larger FORTRAN programs, run on mainframe computers, are retained in the more restricted environment of the microprocessor. As a result, most spin trapping results can be dealt with easily. A number of sample simulations illustrate the program’s features.

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