64501-62-8Relevant academic research and scientific papers
Investigations on Spin-Trapping Kinetics in Radical Systems with Different Reactivity. Photolyses of α-Phenylbenzoine in the Presence of Benzylidene-tert.-butylamine N-oxide
Baumann, H.,Timpe, H.-J.,Zubarev, V. E.,Fok, N. V.,Mel'nikov, M. Y.,Raskasovskij, Y. W.
, p. 749 - 758 (2007/10/02)
As a model system to study the spin-trapping kinetics of systems forming two radicals of different reactivity α-phenylbenzoine (PhB) was chosen.The photolysis of PhB forms benzoyl (B*) and diphenylketylradicals (K*), respectively, which can be trapped by benzylidene-tert-butyl-amine N-oxide (PBN), as a spin trap.The rate constants of radical addition to PBN and their reactions with the spin adducts were determined by means of flash photolysis and kinetic calculations of the PBN concentration dependence.For B* and K* addition rate constants to PBN of k1 = 8.1E5M-1 s-1 and k2 = 5.8E4M-1s-1, respectively, were found.The rate constants for the reactions of B* and K* with the spin adducts are in the order of 1E9...1E10M-1s-1.
