Observations on Solvated Electrons in Aliphatic Hydrocarbons at Room Temperature by Pulse Radiolysis

Abstract

The spectra of solvated electrons (e–s) in n-hexane, cyclohexane, methylcyclohexane and isopentane at room temperature have been obtained. Electron-cation recombination reactions are second order and have rate constants 1–20 × 1014 M–1 s–1 at 20°C. The rate constants for the reaction of e–s with pyrene and carbon tetrachloride in n-hexane are 1.0 × 1012 M–1 s–1 and the latter reaction has an activation energy of 5 ± 1 kcal mol–1. The relationship of these observations to mobilities of electrons in hydrocarbons measured by conductivity is discussed.