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New Chemical Insights Using Weakly Supported Voltammetry: Ion Pairing in the EC2 Reduction of 2,6-Diphenylpyrylium in Acetonitrile

Authors

  • Edward O. Barnes,

    1. Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ (United Kingdom)
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  • Yijun Wang,

    1. Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ (United Kingdom)
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  • Stephen R. Belding,

    1. Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ (United Kingdom)
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  • Prof. Richard G. Compton

    Corresponding author
    1. Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ (United Kingdom)
    • Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ (United Kingdom)
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Abstract

original image

Pairing effect: Varying the concentration of support electrolyte in the electrochemical EC2 reduction of 2,6-diphenylpyrylium reveals the presence of ion pairing between the electroactive species and BF4. Experiment and theory are shown to be in good agreement only if ion pairing is included in the simulations. This previously unanticipated effect is only observable if voltammetry is performed under conditions of weak support.

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