What question did this study set out to answer?

To elucidate the reaction pathway and electrochemical mechanism underlying the electro-oxidation of oxalate in dipolar aprotic solvents.

January 1, 1999Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistryOpen Access

Mechanism of the Dissociative Electro-oxidation of Oxalate in Aprotic Solvents.

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Authors

AIAbdirisak Ahmed IsseUniversity of Padua AGArmando GennaroUniversity of Padua FMFlavio MaranUniversity of Padua

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Implication

Electrochemical analysis reveals a stepwise dissociative oxidation mechanism for oxalate in aprotic solvents, indicating competitive oxidation between free and adduct species.

Key Points

To elucidate the reaction pathway and electrochemical mechanism underlying the electro-oxidation of oxalate in dipolar aprotic solvents.
Performed voltammetric measurements of oxalate oxidation across dipolar aprotic media, specifically dimethylformamide (DMF).
Applied convolution analysis to evaluate heterogeneous electron transfer kinetics, standard potentials, and the influence of water and acidic species.
Demonstrated that oxalate oxidation proceeds via two voltammetric peaks through a dissociative electron transfer generating two carbon dioxide molecules with a consumption of 2 F/mol.
Identified that initial oxidation occurs via a stepwise mechanism forming a radical anion that undergoes C-C bond cleavage, with a standard potential estimated at 0.06 V vs. SCE in DMF.
Showed that released carbon dioxide forms an oxidizable adduct with unreacted oxalate at the second peak, while added water forms a water-oxalate adduct that shifts oxidation potentials positively.

Cite This Study

Isse et al. (1999) studied this question.

synapsesocial.com/papers/6a8d080724f4956b1edaca87 https://doi.org/10.3891/acta.chem.scand.53-1013

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Implication

Electrochemical analysis reveals a stepwise dissociative oxidation mechanism for oxalate in aprotic solvents, indicating competitive oxidation between free and adduct species.

Mechanism of the Dissociative Electro-oxidation of Oxalate in Aprotic Solvents.

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Implication

Key Points

Cite This Study

Mechanism of the Dissociative Electro-oxidation of Oxalate in Aprotic Solvents.

Discussion

Member takes

Implication

Key Points

Cite This Study

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