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PreprintCC BYChemRxiv

Radical Anion of Oxalate Esters: Electrochemical and EPR Investigations

  • Gabriel Durin1,2
  • Kaltum Abdiaziz1
  • Walter Leitner1,3
  • Alexander Schnegg1
  • Nicolas Kaeffer1,4
4 affiliations
  1. 1Max Planck Institute for Chemical Energy Conversion
  2. 2Université Grenoble Alpes
  3. 3RWTH Aachen University
  4. 4Université de Strasbourg, Université de Haute-Alsace, CNRS, LIMA UMR 7042
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Abstract

The oxalic acid/oxalate family is an instrumental C 2 platform for a circular carbon economy strategy. That molecule is the first and simplest of the C‒C bonded products obtained from CO 2 , and production technologies are already available, assisted by renewable electrons or from biomass. Exploiting this family of compounds as C 2 synthons through reductive C‒C couplings into value-added carbon skeletons is a promising opportunity. However, the chemistry of oxalate reduction remains poorly described with the reactivity of these species under reducing conditions or the associated degradation mechanisms still scarcely investigated. Here, we combine electrochemistry, EPR spectroelectrochemistry and computational chemistry to in-depth study the electrogeneration of radical anions from oxalate esters, bringing new perspective on the degradation mechanisms of these reduced species.

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Cite

BibTeXRIS
BibTeX
@misc{durin2026radical,
  title = {{Radical Anion of Oxalate Esters: Electrochemical and EPR Investigations}},
  author = {Gabriel Durin and Kaltum Abdiaziz and Walter Leitner and Alexander Schnegg and Nicolas Kaeffer},
  howpublished = {ChemRxiv},
  year = {2026},
  month = oct,
  doi = {10.26434/chemrxiv.15010894/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010894/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Radical Anion of Oxalate Esters: Electrochemical and EPR Investigations
AU  - Gabriel Durin
AU  - Kaltum Abdiaziz
AU  - Walter Leitner
AU  - Alexander Schnegg
AU  - Nicolas Kaeffer
PY  - 2026
DA  - 2026/10/22
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15010894/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010894/v1
AB  - The oxalic acid/oxalate family is an instrumental C 2 platform for a circular carbon economy strategy. That molecule is the first and simplest of the C‒C bonded products obtained from CO 2 , and production technologies are already available, assisted by renewable electrons or from biomass. Exploiting this family of compounds as C 2 synthons through reductive C‒C couplings into value-added carbon skeletons is a promising opportunity. However, the chemistry of oxalate reduction remains poorly described with the reactivity of these species under reducing conditions or the associated degradation mechanisms still scarcely investigated. Here, we combine electrochemistry, EPR spectroelectrochemistry and computational chemistry to in-depth study the electrogeneration of radical anions from oxalate esters, bringing new perspective on the degradation mechanisms of these reduced species.
ER  -