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Electrochemical transformations of antimony(V) complexes containing tridentate O,N,O-donor ligands

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Abstract

Electrochemical transformations of antimony(V) complexes containing a tridentate redoxactive ligand, N,N-bis-(2-hydroxy-di-3,5-tert-butylphenyl)amine: R 3Sb(Cat-NH-Cat) (R = (1) Ph; (2) Et), (3) Et2Sb(Cat-N-Cat)) are studied. Electrochemical oxidation of complexes 1, 2 occurs irreversibly leading to formation of unstable radical cations. The next stage is the chemical process resulting in formation of neutral paramagnetic compounds. The Et2Sb(V)(Cat-N-Cat) complex is characterized by two reversible anodic redox processes corresponding to a change of in the ligand redox level. Stable paramagnetic derivatives are formed as a result of electrochemical oxidation of compounds 1, 3; this allows considering these compounds as potential radical scavengers. Interaction of complex 1 with electrogenerated superoxide radical anion led to formation of paramagnetic reaction products.

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Authors and Affiliations

  1. South Research Center, Russian Academy of Sciences, ul. Chekhova 41, Rostov-on-Don, 344006, Russia

    I. V. Smolyaninov

  2. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, ul. K. Tropinina 49, Nizhnii Novgorod, 603950, Russia

    A. I. Poddel’skii

  3. Astrakhan State Technical University, ul. Tatishcheva 16, Astrakhan, 414025, Russia

    N. T. Berberova

Authors
  1. I. V. Smolyaninov
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  2. A. I. Poddel’skii
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  3. N. T. Berberova
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Correspondence to I. V. Smolyaninov.

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Original Russian Text © I.V. Smolyaninov, A.I. Poddel’skii, N.T. Berberova, 2011, published in Elektrokhimiya, 2011, Vol. 47, No. 11, pp. 1295–1303.

This paper is published based on the materials of the 17th All-Russian Conference on the Electrochemistry of Organic Compounds, Tambov (EKhOS-2010).

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Smolyaninov, I.V., Poddel’skii, A.I. & Berberova, N.T. Electrochemical transformations of antimony(V) complexes containing tridentate O,N,O-donor ligands. Russ J Electrochem 47, 1211–1219 (2011). https://doi.org/10.1134/S1023193511100211

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  • DOI: https://doi.org/10.1134/S1023193511100211

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