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Study of the nature and mechanism of the formation of paramagnetic species in nickel-based Brookhart-type catalytic systems

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Abstract

The catalytic systems NiBr2(DPP-DAB) + 20 MAO and NiBr2(DPP-BIAN) + 20 MAO (DPP-BIAN = bis(2,6-diisopropylphenyl)-bis(imino)-acenaphtene, MAO = methylaluminoxane), as well as a number of model systems, are studied under conditions of their activation and functioning. There are paramagnetic nickel complexes and radical-anion aluminum complexes in the systems under real conditions of activation and functioning. The highest activity is observed when the Ni(I) signal intensity in the ESR spectrum is maximal. A mechanism of paramagnetic species formation is proposed.

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Authors and Affiliations

  1. Faculty of chemistry Irkutsk State University, Irkutsk, 664003, Russia

    N. S. Gurinovich, S. K. Petrovskii, V. V. Saraev & I. V. Salii

Authors
  1. N. S. Gurinovich
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  2. S. K. Petrovskii
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  3. V. V. Saraev
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  4. I. V. Salii
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Corresponding author

Correspondence to S. K. Petrovskii.

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Original Russian Text © N.S. Gurinovich, S.K. Petrovskii, V.V. Saraev, I.V. Salii, 2016, published in Kinetika i Kataliz, 2016, Vol. 57, No. 4, pp. 529–534.

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Gurinovich, N.S., Petrovskii, S.K., Saraev, V.V. et al. Study of the nature and mechanism of the formation of paramagnetic species in nickel-based Brookhart-type catalytic systems. Kinet Catal 57, 523–527 (2016). https://doi.org/10.1134/S0023158416040054

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  • DOI: https://doi.org/10.1134/S0023158416040054

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