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Issue 2, 1994
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Sulfur–chlorine bond dissociation enthalpies in methane- and benzene-sulfonyl chlorides

Abstract

Sulfur-chlorine bond dissociation enthalpies in methane- and benzene-sulfonyl chlorides, D(RSO2–Cl), were measured by photoacoustic calorimetry and were found to be equal within experimental error (295 kJ mol–1). The implicit absence of a stabilizing effect of the phenyl group in PhSO2˙ is consistent with the known spectroscopic properties of sulfonyl radicals but conflicts with the currently accepted thermochemical data. Appearance energy measurements lead to values for the radical ionization potentials, Ei(MeSO2)= 8.67 and Ei(PhSO2˙)= 7.49 eV and for the enthalpy changes associated with the heterolytic cleavages RSO2Cl→RSO2++ Cl where a substituent effect is observed.

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Article type: Paper
DOI: 10.1039/P29940000357
Citation: J. Chem. Soc., Perkin Trans. 2, 1994,0, 357-360
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    Sulfur–chlorine bond dissociation enthalpies in methane- and benzene-sulfonyl chlorides

    C. Chatgilialoglu, D. Griller, J. M. Kanabus-Kaminska and F. P. Lossing, J. Chem. Soc., Perkin Trans. 2, 1994, 0, 357
    DOI: 10.1039/P29940000357

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