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C(sp3)-F Adsorption Implicated for Reductive Activation at Ag Electrodes.

Ye Ji Kim1, Ching-Nung Chen1, Eva Devlin1

  • 1Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States.

ACS Electrochemistry
|July 8, 2026
PubMed
Summary
This summary is machine-generated.

This study shows organic fluorides can adsorb onto silver electrodes, enabling their reductive activation. This finding advances electroorganic chemistry for fluorinated compounds and chemical recycling.

Keywords:
catalytic electrodeselectrochemical C−F bond activationelectroorganic synthesissurface-enhanced infrared absorption spectroscopy

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Area of Science:

  • Electrochemistry
  • Organic Chemistry
  • Materials Science

Background:

  • Reductive activation of carbon-halogen bonds is crucial for synthesizing fluorinated compounds.
  • Electrochemical reductive activation of C-Cl, C-Br, and C-I bonds at silver electrodes is well-understood.
  • Experimental evidence for surface-mediated reductive C-F bond activation at silver is limited.

Purpose of the Study:

  • To investigate the adsorption of organic fluorides on polarized silver electrodes.
  • To explore the electrochemical reductive activation of C-F bonds at silver electrodes.
  • To compare the behavior of organic fluorides with other organic halides at silver surfaces.

Main Methods:

  • Utilized spectroscopic techniques (e.g., surface-sensitive, in situ spectroscopy) to detect adsorption.
  • Employed voltammetry to study electrochemical reactions and compare electrode performance.
  • Compared nitrile-tagged benzylic bromide, chloride, and fluoride substrates with a non-halogenated analog.

Main Results:

  • Provided experimental evidence for the adsorption of organic fluorides on polarized silver electrodes.
  • Observed enhanced reductive activation of organic fluorides at silver electrodes compared to glassy carbon.
  • Spectroscopic and voltammetric data confirmed adsorption prior to charge transfer.

Conclusions:

  • Organic fluoride adsorption at electrified silver surfaces is feasible.
  • This adsorption facilitates reductive C-F bond activation, opening new electroorganic synthesis pathways.
  • Findings encourage the design of electrodes that leverage surface interactions for advanced electroorganic methods.