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Issue 8, 1986
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An investigation of structure and conformation of thiophene-2-sulphonyl radicals

Abstract

The e.s.r. spectra of a variety of photochemically generated thiophene-2-sulphonyl radicals are described. Their spin distribution is typical of σ-radicals; radicals without substituents at position 3 exhibit relatively rapid rotation about the C–S bond at all accessible temperatures while the 3-bromo-substituted ones demonstrate a marked conformational preference which has been interpreted in terms of a π-type conjugated structure. These findings are substantiated also by the results of INDO calculations carried out for the unsubstituted thiophene-2-sulphonyl radical with different relative arrangements of the SO2 and heteroaromatic moieties.

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Article type: Paper
DOI: 10.1039/P29860001179
Citation: J. Chem. Soc., Perkin Trans. 2, 1986,0, 1179-1182
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    An investigation of structure and conformation of thiophene-2-sulphonyl radicals

    A. Alberti, C. Chatgilialoglu and M. Guerra, J. Chem. Soc., Perkin Trans. 2, 1986, 0, 1179
    DOI: 10.1039/P29860001179

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