Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Dinuclear copper-dioxygen intermediates supported by polyamine ligands.

Shinichi Teramae1, Takao Osako, Shigenori Nagatomo

  • 1Department of Material and Life Science, Graduate School of Engineering, Osaka University, CREST, Japan Science and Technology Corporation, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan.

Journal of Inorganic Biochemistry
|May 12, 2004
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Analysis of lanthanide extraction using dynamic interfacial tension measurement in the NaNO<sub>3</sub> aqueous solution/tributyl phosphate system.

Journal of colloid and interface science·2026
Same author

A desolvation-based molecular crowding mechanism revealed through α,β,γ,δ-tetrakis(1-methylpyridinium-4-yl)porphyrin <i>p</i>-toluenesulfonate-Zn complexation in alcohols.

Physical chemistry chemical physics : PCCP·2026
Same author

Solvent extraction mechanism through ibuprofen inclusion with β-cyclodextrin revealed by dynamic interfacial tension measurement.

Talanta·2026
Same author

Modification of Alkylpyridine Ligands in the Reactions of Osmium(III) Complexes with Anions.

Inorganic chemistry·2025
Same author

Intraparticle diffusion of proteins in diol group-functionalized porous silica particle revealed by fluorescence correlation spectroscopy.

Analytical sciences : the international journal of the Japan Society for Analytical Chemistry·2025
Same author

Detection scheme of arginine as aptamer target based on particle dissociation in coupled acoustic-gravitational field.

Analytical sciences : the international journal of the Japan Society for Analytical Chemistry·2025

Novel polyamine ligands influence copper-oxygen chemistry. Dicopper(I) complexes react with O(2) to form peroxo and bis(mu-oxo) species, while dicopper(II) complexes react with H(2)O(2) to yield hydroperoxo intermediates.

Area of Science:

  • Coordination Chemistry
  • Bioinorganic Chemistry
  • Oxidation Chemistry

Background:

  • Copper-oxygen chemistry is crucial in biological systems and catalysis.
  • Understanding ligand effects on copper reactivity with O(2) and H(2)O(2) is essential.
  • Novel polyamine ligands offer unique coordination environments for copper ions.

Purpose of the Study:

  • To investigate the reactivity of novel dicopper(I) and dicopper(II) complexes with O(2) and H(2)O(2).
  • To elucidate the influence of polyamine ligands (L1 and L2) on copper-oxygen reaction pathways.
  • To characterize reactive oxygen intermediates formed during these reactions.

Main Methods:

  • Synthesis and characterization of dicopper complexes with polyamine ligands L1 and L2.
  • Reactions of copper complexes with molecular oxygen (O(2)) and hydrogen peroxide (H(2)O(2)) at low temperatures.

Related Experiment Videos

  • Spectroscopic analysis including UV-visible, electron spin resonance (ESR), and resonance Raman spectroscopy.
  • Kinetic studies of oxidative N-dealkylation reactions.

    • Main Results:

    • Dicopper(I) complex of L1 reacted with O(2) to form (mu-eta(2):eta(2)-peroxo)dicopper(II) and bis(mu-oxo)dicopper(III) species.
    • Dicopper(I) complex of L2 reacted with O(2) to yield a (mu-hydroxo)dicopper(II) complex without detectable active oxygen intermediates.
    • Dicopper(II) complex of L1 reacted with H(2)O(2) to form a (mu-1,1-hydroperoxo)dicopper(II) complex.
    • Peroxo, bis(mu-oxo), and hydroperoxo intermediates were unstable, leading to ligand N-dealkylation.

    Conclusions:

    • The electronic and steric properties of polyamine ligands significantly modulate copper-oxygen reactivity.
    • Ligand L1 supports the formation of reactive oxygen intermediates, while L2 leads to a less reactive hydroxo species.
    • The observed N-dealkylation highlights the reactivity of these copper-oxygen species and potential degradation pathways.