The alpha-methallyl freeradical is formed in the flash photolysis of 3-methylbut-1-ene, and cis-pent-2-ene in the vapor phase, and then subsequent reactions have been investigated by kinetic spectroscopy and gas-liquid chromatography. The photolysis flash was of short duration and it was possible to follow the kinetics of the radicals' decay, which occurred predominantly by bimolecular recombination
Perkin communications. An e.s.r. study of radical cation cyclization in the radiolytic oxidation of but-3-en-1-ol solutions in Freon matrices
作者:Sheng Dai、Jih Tzong Wang、Ffrancon Williams
DOI:10.1039/p19890001063
日期:——
matrices produces e.s.r. signals from both the protonated tetrahydrofuran-3-yl radical and the ally radical; the former species is readily attributable to the nucleophilic endo cyclization of radicalcationsgenerated from unassociated solute molecules whilst the ally radical is thought to originate from the fragmentation of the alkoxyl radical produced from radicalcationsgenerated within solute clusters
A shock tube, laser-schlieren study of the pyrolysis of isobutene: Relaxation, incubation, and dissociation rates
作者:S. Santhanam、J. H. Kiefer、R. S. Tranter、N. K. Srinivasan
DOI:10.1002/kin.10139
日期:——
and dissociation are clearly separated for T > 1850 K, with estimated incubation times near 200 ns atm. Incubation is essential for modeling of the very low-pressure decomposition. Modeling of gradients with a chain mechanism initiated by CH fission produces an excellent fit and accurate dissociationrates that show severe falloff. A restricted-rotor, Gorin-model RRKM analysis fits these rates quite