Redox Potential Inversion by Ionic Hydrogen Bonding between Phenylenediamines and Pyridines

  • Hsu, WC
  • Hsu, WC
Publisher
AMER CHEMICAL SOC

Abstract

[[abstract]]In electrochemical oxidations, the second oxidation potential of phenylenediamines (PD) varies because of hydrogen-bonding formation for PD(+center dot) with pyridines. A linear relationship was obtained for the potential shift as a function of pK(a) of the protonated pyridines and potential inversion could be observed. The oxidized PD(+center dot) could also form hydrogen bonding with alcohols and the shift of potential exhibits a different pattern.[[note]]SC

Extracted data

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