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Redox Equilibria: Overview01:23

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A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
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Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
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Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
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Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
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Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
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Non-covalent interactions for redox potential modulation in organic electrosynthesis.

Ruoyu Liu1, Huiqiao Wang2, Kun Xu3

  • 1College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.

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Summary

Non-covalent interactions enhance organic electrosynthesis by lowering redox potentials and increasing selectivity. This review explores their application in green synthesis, addressing challenges and future directions.

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Area of Science:

  • Green chemistry and sustainable synthesis
  • Electrochemistry and organic synthesis

Background:

  • Organic electrosynthesis is a key green synthesis tool.
  • Controlling redox potentials is crucial for selectivity and functional group compatibility in electrochemical reactions.
  • Increasing the redox potential gap prevents over-oxidation/reduction, enhancing reaction selectivity.

Purpose of the Study:

  • To review the application of non-covalent interactions in organic electrosynthesis.
  • To highlight how non-covalent interactions address key challenges in electrosynthesis.
  • To discuss future prospects and remaining challenges in the field.

Main Methods:

  • Review of representative examples of non-covalent interactions in organic electrosynthesis.
  • Focus on hydrogen bonding, halogen bonding, and ion pairing strategies.
  • Analysis of how these interactions influence redox potentials and selectivity.

Main Results:

  • Non-covalent interactions effectively lower substrate redox potentials, improving selectivity and functional group tolerance.
  • These interactions increase the redox potential gap between substrates and products, preventing over-oxidation/reduction.
  • Demonstrated success in various organic electrosynthesis applications.

Conclusions:

  • Non-covalent interactions are a powerful strategy for advancing organic electrosynthesis.
  • Further research can optimize these interactions for broader applications in green chemistry.
  • The field holds significant promise for sustainable synthetic methodologies.