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Zinc(II) Chelate Complexes with Redox-Active o-Indophenols: Synthesis and Structure

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Abstract

Zinc(II) complexes 2, 3, and 5 with redox-amphoteric o-indophenol ligands were prepared. The molecular structures of tetracoordinate complex 2 and hexacoordinate complex 3 were determined by single-crystal X-ray diffraction. The antioxidant properties of indophenols and their complexes were studied by cyclic voltammetry (CVA) and EPR spectroscopy. Complexation of indophenols increases the oxidation potentials by more than 0.84 V and leads to the formation of stable metal-containing radicals.

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Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation (the Government assignment in the field of scientific activity, project No. FENW-2023-0017).

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Authors and Affiliations

  1. Institute of Physical and Inorganic Chemistry, Southern Federal University, 344091, Rostov-on-Don, Russia

    E. P. Ivakhnenko, Yu. G. Vitkovskaya, S. E. Kislitsyn, A. G. Starikov, P. A. Knyazev & V. I. Minkin

  2. Moscow State University, 119991, Moscow, Russia

    K. A. Lysenko

  3. International Institute for Smart Materials, Southern Federal University, 344090, Rostov-on-Don, Russia

    A. A. Tereshchenko

Authors
  1. E. P. Ivakhnenko
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  2. Yu. G. Vitkovskaya
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  3. K. A. Lysenko
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  4. S. E. Kislitsyn
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  5. A. G. Starikov
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  6. P. A. Knyazev
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  7. A. A. Tereshchenko
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  8. V. I. Minkin
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Correspondence to E. P. Ivakhnenko or V. I. Minkin.

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The authors declare that they have no conflicts of interest.

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Translated by O. Fedorova

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Ivakhnenko, E.P., Vitkovskaya, Y.G., Lysenko, K.A. et al. Zinc(II) Chelate Complexes with Redox-Active o-Indophenols: Synthesis and Structure. Russ. J. Inorg. Chem. 68, 1159–1168 (2023). https://doi.org/10.1134/S0036023623700304

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  • DOI: https://doi.org/10.1134/S0036023623700304

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