Time-domain electron-spin-resonance studies on hydrogen atom transfer to photoexcited quinones

1993 ◽  
Vol 105 (4-5) ◽  
Author(s):  
Ranjan Das ◽  
P K Radha ◽  
Balu Venkataraman
Keyword(s):  
Electron Spin Resonance ◽  
Hydrogen Atom ◽  
Electron Spin ◽  
Time Domain ◽  
Hydrogen Atom Transfer ◽  
Atom Transfer ◽  
Spin Resonance

A Kinetic Electron Spin Resonance Study of the Transfer of a Hydrogen Atom from α-Tetralin Hydroperoxide to a Tertiary Alkylperoxy Radical

1975 ◽  
Vol 53 (5) ◽  
pp. 623-627 ◽  
Author(s):  
J. H. B. Chenier ◽  
J. A. Howard
Keyword(s):  
Electron Spin Resonance ◽  
Hydrogen Atom ◽  
Electron Spin ◽  
Hydrogen Atom Transfer ◽  
Electron Spin Resonance Study ◽  
Absolute Rate ◽  
Alkyl Hydroperoxides ◽  
Spin Resonance ◽  
Alkylperoxy Radicals ◽  
Spin Resonance Study

A kinetic electron spin resonance spectroscopic study of the reaction of tertiary alkylperoxy radicals with α-tetralin hydroperoxide is reported. The absolute rate constants for this hydrogen atom transfer process (k1) are given by the equation log (k1/M−1 s−1) = (6.0 ± 0.5 ) − (4.5 ± 0.5 )/θ, where θ = 2.303 RT kcal mol−1.A significant isotope effect is obtained when the hydroperoxidic hydrogen is replaced by deuterium, e.g. k1H/k1D at 21° = 9.Other alkyl hydroperoxides, e.g. triphenylmethyl, s-butyl, and 9,10-dihydro-9-anthracyl have approximately the same reactivity to t-ROO• as α-C10H11OOH.

Characterization of Cu(II) Bipyridine Complexes in Halogen Atom Transfer Reactions by Electron Spin Resonance

2003 ◽  
Vol 36 (22) ◽  
pp. 8291-8296 ◽  
Author(s):  
Bernhard Knuehl ◽  
Tomislav Pintauer ◽  
Atsushi Kajiwara ◽  
Hanns Fischer ◽  
Krzysztof Matyjaszewski
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Halogen Atom ◽  
Transfer Reactions ◽  
Atom Transfer ◽  
Spin Resonance ◽  
Atom Transfer Reactions
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