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Related Concept Videos

Redox Reactions01:24

Redox Reactions

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...
Redox Reactions01:27

Redox Reactions

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...
Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

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...
Ladder Diagrams: Redox Equilibria01:30

Ladder Diagrams: Redox Equilibria

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.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

Oxidation–Reduction Reactions

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[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
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Multiredox active [3 × 3] copper grids.

Hiroki Sato1, Lisa Miya, Kiyotaka Mitsumoto

  • 1Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.

Inorganic Chemistry
|August 13, 2013
PubMed
Summary

Researchers synthesized a nonanuclear copper grid complex with a [3 × 3] structure. This complex exhibits unique redox behavior and structural changes impacting magnetic coupling pathways.

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Area of Science:

  • Coordination Chemistry
  • Inorganic Chemistry
  • Materials Science

Background:

  • Nonanuclear copper complexes are of interest for their unique magnetic and electronic properties.
  • Grid-like structures offer novel architectures for metal ion assembly.
  • Understanding redox behavior is crucial for potential applications.

Purpose of the Study:

  • To synthesize and characterize a novel nonanuclear copper grid complex.
  • To investigate the redox properties of the synthesized complex.
  • To explore the structural and magnetic consequences of redox-induced changes.

Main Methods:

  • Synthesis of a nonanuclear copper grid complex using a specific ligand (L).
  • Electrochemical studies to determine redox behavior.
  • X-ray crystallography to analyze the structure of the parent and reduced complexes.

Main Results:

  • A [3 × 3] nonanuclear copper grid complex, [Cu(II)9(L)6](BF4)6·1-PrOH·5H2O (1·1-PrOH·5H2O), was successfully synthesized.
  • The complex displayed four-step quasi-reversible redox behavior, transitioning from [Cu(II)9] to [Cu(I)4Cu(II)5].
  • Isolation of a heterovalent complex, [Cu(I)2Cu(II)7(L)6](PF6)4·3H2O (2·3H2O), revealed a distorted core structure that altered intramolecular magnetic coupling.

Conclusions:

  • The study demonstrates the successful synthesis of a complex nonanuclear copper grid.
  • The redox activity significantly influences the complex's structure and magnetic properties.
  • This work provides insights into the design of functional copper-based molecular materials.