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Unsymmetrical Structure of the Co(III) Complex with Bisheteroarylhydrazone as Hydrazone and Quinolone Tautomers Stabilized by Hydrogen Bond

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Abstract

Bisheteroarylhydrazone (H2L), the product of 2-hydrazinoquinoline condensation with diacetyl, and mononuclear Co(III) complex [Co(HL)2]Br·2DMSO (I) based on this ligand were synthesized. The structure of the chelate was determined by X-ray diffraction (CIF file CCDC no. 2099899). The Co(III) ion in I occurs in the low-spin state and has a slightly distorted octahedral coordination unit. The two monodeprotonated bisquinolylhydrazones in the chelate function as tridentrate ligands in different tautomeric forms stabilized by interligand intramolecular hydrogen bond.

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ACKNOWLEDGMENTS

X-ray diffraction studies were carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (no. AAAA-A19-119092390076-7) to the Institute of Problems of Chemical Physics, Russian Academy of Sciences.

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Correspondence to Yu. P. Tupolova or D. V. Korchagin.

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Translated by Z. Svitanko

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Tupolova, Y.P., Korchagin, D.V., Lebedev, V.E. et al. Unsymmetrical Structure of the Co(III) Complex with Bisheteroarylhydrazone as Hydrazone and Quinolone Tautomers Stabilized by Hydrogen Bond. Russ J Coord Chem 48, 362–370 (2022). https://doi.org/10.1134/S1070328422060069

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  • DOI: https://doi.org/10.1134/S1070328422060069

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