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Related Concept Videos

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
Structural Isomerism02:34

Structural Isomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction01:22

Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction

The radical dimerization of ketones or aldehydes gives vicinal diols through a pinacol coupling reaction. However, the behavior of titanium metals used for the reaction as a source of electrons is unusual. When the reaction is carried out in the presence of titanium, diols can be isolated at low temperatures. Else titanium further reacts with diols, forming alkenes through the McMurry reaction.
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...

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Updated: Jun 19, 2026

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
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Building multistate redox-active architectures using metal-complex functionalized perylene bis-imides.

Gudrun Goretzki1, E Stephen Davies, Stephen P Argent

  • 1School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK.

Inorganic Chemistry
|October 6, 2009
PubMed
Summary
This summary is machine-generated.

Novel redox-active architectures featuring ferrocene or cobalt-dithiolene in perylene-bisimides were synthesized and studied. These compounds exhibit unique optical and redox properties, with potential applications in materials science.

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05:47

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Published on: August 7, 2018

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Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
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Published on: June 9, 2023

Area of Science:

  • Materials Science
  • Organic Chemistry
  • Electrochemistry

Background:

  • Perylene-bisimides (PBIs) are versatile organic chromophores with tunable electronic properties.
  • Introducing redox-active moieties can create advanced functional materials for electronics and energy storage.
  • Understanding structure-property relationships is crucial for designing novel molecular architectures.

Purpose of the Study:

  • To synthesize and characterize novel multistate redox-active architectures based on perylene-bisimides.
  • To investigate the optical and redox properties of perylene-bisimides functionalized with ferrocene and cobalt-dithiolene units.
  • To explore the electronic communication between redox centers within these complex molecular systems.

Main Methods:

  • Synthesis of novel perylene-bisimide derivatives incorporating ferrocene and cobalt-dithiolene.
  • Single crystal X-ray diffraction for structural elucidation of key compounds.
  • Cyclic voltammetry, spectroelectrochemistry, and electron paramagnetic resonance (EPR) for redox property investigation.

Main Results:

  • Structural characterization confirmed the twisted perylene core in disubstituted PBIs.
  • Ferrocene-substituted PBIs displayed two PBI-based reductions and a single reversible two-electron oxidation.
  • Cobalt-dithiolene-substituted PBI showed two reversible reductions, indicating communication across the perylene core.

Conclusions:

  • The synthesized redox-active perylene-bisimide architectures exhibit tunable electrochemical behavior.
  • The study demonstrates effective functionalization of PBIs with ferrocene and cobalt-dithiolene moieties.
  • These findings provide insights into designing advanced materials with controlled redox properties and electronic communication.