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Spin State of the Cobalt(II) Complex with N,N'-Disubstituted 2,6-Bis(pyrazol-3-yl)pyridine

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Abstract

The reaction of a new N,N'-disubstituted 2,6-bis(pyrazol-3-yl)pyridine ligand (L) with Co(ClO4)2·6H2O gave cobalt(II) complex [Co(L)2](ClO4)2 (I), which was characterized by elemental analysis, mass spectrometry, NMR spectroscopy, and X-ray diffraction (CIF file CCDC no. 2121030). According to the Evans methods, NMR spectroscopy, and analysis of the temperature dependence of the NMR spectra, which are used to identify the spin state of paramagnetic compounds in solution, the cobalt(II) ion in complex I occurs in the high-spin state and does not undergo temperature-induced spin transition in the 235–345 K range.

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ACKNOWLEDGMENTS

X-ray diffraction studies were carried out using research equipment of the Center of Investigations of Molecular Structure of the Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, supported by the Ministry of Science and Higher Education of the Russian Federation.

Funding

This study was supported by the Russian Science Foundation (grant no. 17-13-01456).

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Authors and Affiliations

  1. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia

    E. A. Khakina, G. L. Denisov, I. A. Nikovskii, A. V. Polezhaev & Yu. V. Nelyubina

  2. Bauman Moscow State Technical University, Moscow, Russia

    A. V. Polezhaev & Yu. V. Nelyubina

Authors
  1. E. A. Khakina
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  2. G. L. Denisov
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  3. I. A. Nikovskii
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  4. A. V. Polezhaev
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  5. Yu. V. Nelyubina
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Corresponding author

Correspondence to Yu. V. Nelyubina.

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The authors declare that they have no conflicts of interest.

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Translated by Z. Svitanko

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Khakina, E.A., Denisov, G.L., Nikovskii, I.A. et al. Spin State of the Cobalt(II) Complex with N,N'-Disubstituted 2,6-Bis(pyrazol-3-yl)pyridine. Russ J Coord Chem 48, 344–352 (2022). https://doi.org/10.1134/S1070328422060021

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  • DOI: https://doi.org/10.1134/S1070328422060021

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