Russian Journal of Coordination Chemistry

, Volume 45, Issue 7, pp 489–495 | Cite as

Heterospin Copper(II) Catecholate Complex with the TEMPO–Iminopyridine Ligand

  • A. V. Cherkasova
  • K. A. Kozhanov
  • A. A. Zolotukhin
  • A. S. Bogomyakov
  • A. V. Cherkasov
  • V. K. CherkasovEmail author


The heterospin copper(II) complex, ((pyridin-2-ylmethylene)-4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl)-3,6-di-tert-butylcatecholatocopper(II) (I), is synthesized and characterized by IR spectroscopy, magnetochemistry, EPR, and X-ray diffraction analysis. The one-electron oxidation of complex I by AgBF4 affords the biradical copper(I) complex: bis[((pyridin-2-ylmethylene)-4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl)]copper(I) (II). An analysis of the parameters of isotropic EPR spectra of complexes I and II indicates that they are biradicals with the fast (I) and intermediate (II) exchange interaction between the radical centers.


biradical heterospin complexes copper(II) molecular spectroscopy 



The X-ray diffraction studies were carried out in the framework of the state task (theme no. 44.2, registration no. AAAA-A16-116122110053-1) using the scientific equipment of the Center for Collective Use “Analytical Center of the Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences.”


This work was supported by the Russian Science Foundation, grant no. 14-13-01296.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • A. V. Cherkasova
    • 1
  • K. A. Kozhanov
    • 1
  • A. A. Zolotukhin
    • 1
  • A. S. Bogomyakov
    • 2
  • A. V. Cherkasov
    • 1
  • V. K. Cherkasov
    • 1
    Email author
  1. 1.Razuvaev Institute of Organometallic Chemistry, Russian Academy of SciencesNizhny NovgorodRussia
  2. 2.International Tomography Center, Siberian Branch, Russian Academy of SciencesNovosibirskRussia

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