Journal Articles (before-1995)

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    Photochemistry of Michler’s Ketone in Cyclohexane and Alcohol Solvents
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1977, 73 (10), 1977) Brown, Robert G; Porter, Sir George
    The triplet lifetime of Michler's ketone has been measured in cyclohexane, isopropanol and ethanol and has been found to vary only slightly between solvents. In the light of these results, the photoreactivity of the ketone is interpreted as arising from population of an excited 3nπ* state from a lower-lying 3charge-transfer state.
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    Interpretation of the Thermodynamic, Spectroscopic and Dielectric Properties of Solutions of Ethanol in Cyclohexane in Terms of Association
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1977, 73 (07), 1977) Stokes, Robin H.
    A model is proposed to explain the thermodynamic, spectroscopic and dielectric properties of dilute solutions of ethanol in cyclohexane in terms of association into both open-chain and cyclic hydrogen bonded groups, with allowance for a Van der Waals interaction term. It proves necessary to specify: two standard enthalpies for formation of the H-bonds, h2=–21.2 kJ mol–1 for the dimer and h=–23.5 kJ mol–1 for all larger groups; three standard entropies of stepwise formation (for the dimer, trimer and all higher open-chain forms); and a standard entropy of formation from open-chain to cyclic groups, which are assumed to be present to a significant extent only for groups of more than four molecules. This model gives a quantitative reproduction of the activity coefficients, enthalpies of mixing and i.r. spectroscopic behaviour, and accounts for the initial decrease in the apparent dipole moment.
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    Enthalpy of Mixing of n-Hexane and Cyclohexane
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (2), 1973) Ahmed, Akhlaq
    The enthalpy of mixing (HE) was measured for the liquids n-hexane and cyclohexane at 298.03 K. HE was corrected to 298.15 K for comparison with the results of other workers. The values of HE are well established with an uncertainty of about ± 1.5 J mol–1 by the several sets of recent measurements. In view of the reproducibility of these measurements and of the small temperature-coefficient, this system can be recommended as an international standard for checking mixing calorimeters.
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    Threshold Energy in the Abstraction Reaction between Hydrogen Atoms and Cyclohexane
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (9), 1972) Fink, Richard D.; Nicholas, John E.
    The reactions of deuterium atoms of selected translational energies with cyclohexane have been investigated. The atoms were generated by the photochemical dissociation of hydrogen halides with a series of effectively monochromatic light sources. The relative probability of atoms undergoing reaction or energy loss on collision with cyclohexane was determined at each initial energy and the phenomenological threshold energy for the abstraction reaction was measured at 36 ± 3 kJ mol–1.