Copper(II) Complexes of Phenolate-Bridged Dimeric Cyclam Ligands: Synthesis, Coordination and Electrochemical Study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00599913" target="_blank" >RIV/61388955:_____/24:00599913 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/24:10484160
Result on the web
<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/ejic.202400288" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/ejic.202400288</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/ejic.202400288" target="_blank" >10.1002/ejic.202400288</a>
Alternative languages
Result language
angličtina
Original language name
Copper(II) Complexes of Phenolate-Bridged Dimeric Cyclam Ligands: Synthesis, Coordination and Electrochemical Study
Original language description
Bis(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.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/GA21-23261S" target="_blank" >GA21-23261S: Interconnected azamacrocyclic complexes – new kind of molecular electronics</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Journal of Inorganic Chemistry
ISSN
1434-1948
e-ISSN
1099-0682
Volume of the periodical
27
Issue of the periodical within the volume
31
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
e202400288
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85206241354