Heterocyclic radical ions. V. Electron spin resonance splittings of semifuraquinones

1971 ◽  
Vol 93 (12) ◽  
pp. 2913-2917 ◽  
Author(s):  
Stephen F. Nelsen ◽  
Enrique F. Travecedo ◽  
Errol D. Seppanen
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Radical Ions ◽  
Heterocyclic Radical ◽  
Spin Resonance

ELECTRON SPIN RESONANCE DETERMINATION OF THE RADIOLYTIC YIELDS OF TRAPPED ELECTRONS AND OTHER SPECIES IN AN ORGANIC GLASS

1965 ◽  
Vol 43 (8) ◽  
pp. 2141-2147 ◽  
Author(s):  
D. R. Smith ◽  
J. J. Pieroni
Keyword(s):  
Electron Spin Resonance ◽  
Liquid Nitrogen ◽  
Electron Spin ◽  
Liquid Nitrogen Temperature ◽  
Paramagnetic Species ◽  
Radical Ions ◽  
Trapped Electrons ◽  
Accuracy And Precision ◽  
Spin Resonance

The radiolytic yields, at liquid nitrogen temperature, of trapped electrons and radicals or radical-ions in 2-methyltetrahydrofuran and the yields of these species plus the biphenyl anion in solutions containing biphenyl have been determined by e.s.r. These measurements were also carried out after photolysis of the trapped electrons. The combined results are interpreted in terms of the identity of the intermediates and the reactions which they undergo. "Dual e.s.r. cavity" techniques have enabled greater accuracy and precision than is normally obtained when concentrations of paramagnetic species are determined by e.s.r.

Electron-Spin-Resonance Study of Tetracyclopentanaphthalene Radical Ions

1986 ◽  
Vol 39 (1) ◽  
pp. 195 ◽  
Author(s):  
MG Bakker ◽  
RFC Claridge
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Electron Spin Resonance Study ◽  
Radical Ions ◽  
Spin Resonance ◽  
Spin Resonance Study ◽  
Anion Radicals

From an e.s.r. investigation of tetracyclopentanaphthalene cation and anion radicals it was found that the oscillation of the alkyl cyclopentyl rings is sufficiently rapid to average the splitting constants observed. The averaged splitting constants found were 0.5891, 0.1983 and 0.0207 mT in the anion, and 1.1637, 0.4387 and 0.0062 mT in the cation.

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