Browsing by Author "Baxendale, J. H."

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    Electrons in Liquid Alcohols at Low Temperatures
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (3), 1973) Baxendale, J. H.; Wardman, Peter
    The spectra due to electrons in alcohols at temperatures near their melting points show absorptions in the far and infra-red which, in general, decay to produce increased absorptions in the visible. At these temperatures the time for these changes increases in the order methanol, ethanol, n-butyl, isopropyl, n-propyl alcohol. For the latter the half-life of the absorption decay is given by τs=A exp E/RT where log10A=–15.7 and E= 25 kJ (5.9 kcal). Addition of solutes which react with electrons decreases the initial infra-red absorption and is interpreted as reaction with electrons before they become solvated. The observations are discussed in terms of molecular relaxation and electron migration
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    Observations on Solvated Electrons in Aliphatic Hydrocarbons at Room Temperature by Pulse Radiolysis
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (4), 1973) Baxendale, J. H.; Bell, C.; Wardman, P.
    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.
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    Yield of Excited Singlet and Triplet States in the Pulse Radiolysis of Toluene
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (4), 1973) Baxendale, J. H.; Rasburn, E. J.
    The 100 eV yield of the excited singlet state of toluene following a pulse of 10 MeV electrons is found to be 1.35, and the rate constant for its reaction with naphthalene to give the excited naphthalene singlet is 5.4 × 1010 M–1 s–1. The corresponding yield of the triplet state of toluene is 2.8 and assuming it reacts with naphthalene at a normal diffusion controlled rate, its half life is calculated to be 17 ns.