Organic and biological spectrochemical studies. XXVII. Electron spin resonance spectra of the pyrene monomer and dimer cation radicals

1968 ◽  
Vol 46 (7) ◽  
pp. 1158-1160 ◽  
Author(s):  
J. T. Cooper ◽  
W. F. Forbes
Keyword(s):  
Electron Spin Resonance ◽  
Sulfur Dioxide ◽  
Electron Spin ◽  
Boron Trifluoride ◽  
Radical Cations ◽  
Hydrocarbon Radical ◽  
Experimental Conditions ◽  
Cation Radicals ◽  
Spin Resonance

The electron spin resonance spectra of pyrene, dissolved in sulfur dioxide – boron trifluoride, are investigated. Two different spectra can be obtained, depending on the experimental conditions, and are ascribed to the monomeric and dimeric hydrocarbon radical cations.

Radical cations of some substituted pyrenes

1970 ◽  
Vol 48 (13) ◽  
pp. 1996-1999 ◽  
Author(s):  
J. T. Cooper
Keyword(s):  
Electron Spin Resonance ◽  
Sulfur Dioxide ◽  
Chlorine Atom ◽  
Electron Spin ◽  
Hyperfine Splitting ◽  
Boron Trifluoride ◽  
Radical Cations ◽  
Molecular Orbital Calculations ◽  
Spin Resonance ◽  
First Time

The electron spin resonance spectra of several substituted pyrene cations, produced by oxidation with boron trifluoride in sulfur dioxide, are reported. The spectra are analyzed and the splitting constants given. With 4-chloropyrene, hyperfine splitting is observed due to the chlorine atom, for the first time in such a species. Molecular orbital calculations (Hückel and McLachlan) are presented for three of the compounds studied.

An Electron Spin Resonance Study of the Radical Cations Derived from Dialkoxybiphenyls

1972 ◽  
Vol 50 (13) ◽  
pp. 2141-2143 ◽  
Author(s):  
Paul D. Sullivan ◽  
Louis J. Norman
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Radical Cations ◽  
Electron Spin Resonance Study ◽  
Molecular Motions ◽  
Cation Radicals ◽  
Spin Resonance ◽  
Spin Resonance Study

The e.s.r. spectra of the cation radicals of various alkyl substituted 4,4′-dihydroxybiphenyls have been studied. These spectra give information regarding the molecular motions occurring in these compounds.

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