Faculty of Chemistry Repository - Cherry
University of Belgrade - Faculty of Chemistry
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   Faculty of Chemistry Repository - Cherry
  • Hemijski fakultet
  • Publikacije
  • View Item
  •   Faculty of Chemistry Repository - Cherry
  • Hemijski fakultet
  • Publikacije
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Cobalt(II), Zinc(II), Iron(III), and Copper(II) Complexes Bearing Positively Charged Quaternary Ammonium Functionalities: Synthesis, Characterization, Electrochemical Behavior, and SOD Activity

Thumbnail
2020
Cobalt(II)_Zinc(II)_Iron(III)_pub_2020.pdf (2.203Mb)
Authors
Stojičkov, Marko
Sturm, Sabrina
Čobeljić, Božidar
Pevec, Andrej
Jevtović, Mima
Scheitler, Andreas
Radanović, Dušanka
Senft, Laura
Turel, Iztok
Anđelković, Katarina K.
Miehlich, Matthias
Meyer, Karsten
Ivanović‐Burmazović, Ivana
Article (Published version)
Metadata
Show full item record
Abstract
We have synthesized and characterized Co(II) (1), Zn(II) (2), Fe(III) (3) and Cu(II) (4) complexes of 2,2'‐[2,6‐pyridinediylbis(ethylidyne‐1‐hydrazinyl‐2‐ylidene)]bis[N,N,N‐trimethyl‐2‐oxoethanaminium] dichloride (H2LCl2) by NMR, IR, and X‐Band EPR spectroscopy, respectively, as well as by single‐crystal X‐ray structural analysis. H2LCl2 belongs to the class of diacetylpyridine bis(hydrazone) ligands and bears two positively charged quaternary ammonium functionalities. The complexes 1–3 possess a pentagonal‐bipyramidal geometry, whereas 4 has square‐pyramidal geometry. Redox reactivity and SOD activity of the complexes was studied by means of electrochemical measurements in aqueous‐buffer and DMF or DMSO solutions, respectively, as well as by stopped‐flow measurements. Complexes 1–3 do not have SOD activity, whereas 4 exhibits a high catalytic rate constant for the superoxide dismutation, kcat = 1.73 × 107 m–1 s–1 (in MOPS buffer solution of pH = 7.4). The results were discussed in ter...ms of complex redox potentials, electrostatic interactions and their spatial distribution, kinetic lability of metal centers, and stability of peroxo intermediates, respectively.

Keywords:
Cobalt / Copper / Electrochemistry / Iron / SOD activity / Structure elucidation
Source:
European Journal of Inorganic Chemistry, 2020, 3347-3358
Publisher:
  • Wiley-VCH Verlag
Projects:
  • Interactions of natural products, their derivatives and coordination compounds with proteins and nucleic acids (RS-172055)
  • Slovenian Research Agency (ARRS) through program P‐0175
  • ERASMUS + program
  • DFG (IV 80/13‐1 project)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)

DOI: 10.1002/ejic.202000415

ISSN: 1099-0682

WoS: 000564577200001

Scopus: 2-s2.0-85090058906
[ Google Scholar ]
URI
http://cherry.chem.bg.ac.rs/handle/123456789/4285
Collections
  • Publikacije
Institution
Hemijski fakultet

DSpace software copyright © 2002-2015  DuraSpace
About CHERRY - CHEmistry RepositoRY | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceInstitutionsAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CHERRY - CHEmistry RepositoRY | Send Feedback

OpenAIRERCUB