Electron Spin Resonance Absorption Spectra of Some Organic Free Radicals

1957 ◽  
Vol 26 (6) ◽  
pp. 1766-1766 ◽  
Author(s):  
J. H. Lupinski
Keyword(s):  
Free Radicals ◽  
Electron Spin Resonance ◽  
Absorption Spectra ◽  
Electron Spin ◽  
Resonance Absorption ◽  
Spin Resonance

Electron Spin Resonance Absorption Spectra of Hole‐Trap Centers Associated with Phosphorous in Irradiated Single Crystal Calcite

1969 ◽  
Vol 51 (11) ◽  
pp. 4978-4982 ◽  
Author(s):  
R. A. Serway ◽  
S. A. Marshall ◽  
J. A. McMillan ◽  
R. L. Marshall ◽  
W. D. Ohlsen
Keyword(s):  
Electron Spin Resonance ◽  
Single Crystal ◽  
Absorption Spectra ◽  
Electron Spin ◽  
Resonance Absorption ◽  
Hole Trap ◽  
Spin Resonance

THE ELECTRON SPIN RESONANCE ABSORPTION SPECTRA OF SEMIQUINONE IONS: PART I. THE HYPERFINE SPLITTING DUE TO ALKOXY GROUPS

1960 ◽  
Vol 38 (7) ◽  
pp. 1158-1166 ◽  
Author(s):  
Y. Matsunaga ◽  
C. A. McDowell
Keyword(s):  
Electron Spin Resonance ◽  
Absorption Spectra ◽  
Electron Spin ◽  
Hyperfine Splitting ◽  
Resonance Absorption ◽  
Alkyl Gallates ◽  
Alkyl Groups ◽  
Spin Resonance ◽  
Hyperfine Splittings ◽  
Alkoxy Groups

The electron spin resonance absorption spectra of semiquinone ions with alkoxy groups have been examined and compared with those with substituted alkyl groups. The splitting constant for the alkoxy protons has been found to be about one-half that of alkyl protons in the corresponding free radical. Hyperfine splittings due to methoxy, ethoxy, and isopropoxy protons have been demonstrated using the semiquinone ions formed by oxidation of alkyl gallates. The available evidence suggests that, in accounting for the hyperfine splitting due to alkyl protons, spin polarization is as important as electron delocalization.

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