- Copper(II) Complexes of Phenolate-Bridged Dimeric Cyclam Ligands: Syn…
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Copper(II) Complexes of Phenolate-Bridged Dimeric Cyclam Ligands: Synthesis, Coordination and Electrochemical Study

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    SYSNO ASEP0599913
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve SCOPUS
    NázevCopper(II) Complexes of Phenolate-Bridged Dimeric Cyclam Ligands: Synthesis, Coordination and Electrochemical Study
    Tvůrce(i) Šrein, J. (CZ)
    Koláčná, Lucie (UFCH-W) ORCID, RID, SAI
    Kotek, J. (CZ)
    Kubíček, V. (CZ)
    Ludvík, Jiří (UFCH-W) RID, ORCID
    Číslo článkue202400288
    Zdroj.dok.European Journal of Inorganic Chemistry. - : Wiley - ISSN 1434-1948
    Roč. 27, č. 31 (2024)
    Poč.str.12 s.
    Jazyk dok.eng - angličtina
    Země vyd.US - Spojené státy americké
    Klíč. slovaCopper(II) complexes ; Electrochemistry ; Macrocyclic ligands ; Stability ; UV/VIS spectroscopy
    Vědní obor RIVCG - Elektrochemie
    Obor OECDElectrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
    CEPGA21-23261S GA ČR - Grantová agentura ČR
    Způsob publikováníOmezený přístup
    Institucionální podporaUFCH-W - RVO:61388955
    EID SCOPUS85206241354
    DOI https://doi.org/10.1002/ejic.202400288
    AnotaceBis(macrocyclic) complexes are investigated as artificial analogues of natural dinuclear metalloenzymes. Two ligands containing two cyclam rings connected through a p-cresol or 4-nitrophenol spacer were synthesized and their complexing properties were investigated. CuII complexes were prepared and their properties were studied by a combination of spectral, diffraction and electrochemical methods. The phenolate group is not or only weakly coordinated to the central CuII ion and the two macrocycles behave mostly as two independent complexing units. All the determined solid-state structures showed cyclam adopting trans-III geometry, however, solution study indicated the presence of more isomers in the solution whose abundance changes with pH. Electrochemical reduction of the complexes is irreversible and results in the reductive decomplexation to amalgamated Cu metal. The amalgamated metal is re-oxidized to CuII during the anodic scan of CV and the metal ion is re-coordinated. The ligand containing the nitro group shows an irreversible four-electron reduction of the nitro group. The ligands and the complexes undergo also a slow degradation when incubated in the aqueous solutions for a prolonged time. The degradation relies on the “retro-Mannich” cleavage of the methylene bridge connecting the cyclam ring with the phenol moiety.
    PracovištěÚstav fyzikální chemie J.Heyrovského
    KontaktMichaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
    Rok sběru2025
    Elektronická adresahttps://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/ejic.202400288
Počet záznamů: 1  

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