Temperature Dependence of the Reactions of Phenyl Radicals with 1,1-Diphenylethylene, Carbon Tetrachloride, and Cyclohexene
作者:Dean Weldon、Stacey Holland、J. C. Scaiano
DOI:10.1021/jo961008n
日期:1996.1.1
The reaction of phenyl radicals with 1,1-diphenylethylene (DPE), carbon tetrachloride, and cyclohexene has been examined over a range of temperatures using laser flash photolysis techniques. The activation energies are 0.71 +/- 0.04, 3.53 +/- 0.11 and 2.32 +/- 0.33 kcal/mol, and the preexponential factors, expressed as log (A/M(-1)s(-1)), are 9.19 +/- 0.03, 8.96 +/- 0.09, and 9.02 +/- 0.26, for DPE, CCl4, and c-C6H10, respectively. In particular the CCl4 data provide a much needed reference for competitive studies.