Trapped hydrogen atom decay in .gamma.-irradiated sulfuric acid glasses at 63-90.deg.K

1975 ◽  
Vol 79 (24) ◽  
pp. 2600-2602 ◽  
Author(s):  
Jerzy Kroh ◽  
Andrzej Plonka
Keyword(s):  
Sulfuric Acid ◽  
Hydrogen Atom ◽  
Gamma Irradiated ◽  
Atom Decay

Kinetics of trap-limited hydrogen atom decay in γ-irradiated sulfuric acid glasses

1979 ◽  
Vol 83 (14) ◽  
pp. 1807-1810 ◽  
Author(s):  
Andrzej. Plonka ◽  
Jerzy. Kroh ◽  
Lefik. Wlodzimierz ◽  
Wlodzimierz. Bogus
Keyword(s):  
Sulfuric Acid ◽  
Hydrogen Atom ◽  
Kinetics Of ◽  
Atom Decay

An Electron Spin Resonance Study of Hydrogen Atom Reactions with Butenes Trapped in Aqueous Sulfuric Acid Glasses

1974 ◽  
Vol 52 (19) ◽  
pp. 3410-3414 ◽  
Author(s):  
Howard Reginald Falle ◽  
Frederick Peter Sargent
Keyword(s):  
Electron Spin Resonance ◽  
Sulfuric Acid ◽  
Hydrogen Atom ◽  
Electron Spin ◽  
Qualitative Agreement ◽  
Electron Spin Resonance Study ◽  
Torsional Motion ◽  
Spin Resonance ◽  
Percentage Ratio ◽  
Spin Resonance Study

Hydrogen atom reactions with butenes trapped in sulfuric acid glasses yield sec-butyl radicals by addition and methallyl radicals by abstraction. The character of the e.s.r. spectra due to the CH3ĊHCH2CH3 radicals depends on whether cis-2-butene or trans-2-butene was the precursor. Computer simulated spectra indicate that the most probable conformation for the CH3ĊHCH2CH3 radicals derived from cis-2-butene and trans-2-butene are 'oblique' and 'trans', respectively. Qualitative agreement between the simulated and experimental spectra is achieved by adding together the spectra computed for CH3ĊHCH2CH3 and [Formula: see text] in the percentage ratio 40:60. In computing the spectra for CH3ĊHCH2CH3, it is assumed that the radicals are distributed over a range of conformations and can undergo torsional motion.

Halogenation with N-haloamines in strong acids. I. The nature of the chain propagating radical

1970 ◽  
Vol 48 (4) ◽  
pp. 546-553 ◽  
Author(s):  
J. Spanswick ◽  
K. U. Ingold
Keyword(s):  
Acetic Acid ◽  
Sulfuric Acid ◽  
Hydrogen Atom ◽  
Chloride Ion ◽  
Chain Process ◽  
Molecular Chlorine ◽  
Radical Chain ◽  
Atom Chain ◽  
Strong Acids ◽  
Radical Chain Process

The N-haloamine halogenation of 1-chlorobutane in 4 M sulfuric acid in acetic acid as solvent is a radical chain process in which aminium radicals are the principal hydrogen atom abstracting species. With N-chloroamines, a concurrent chlorine atom chain is promoted by impurities such as molecular chlorine, hydrogen chloride, and chloride ion.

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