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Polymeric copper(II) complexes with 4-formyl-3-methyl-1-phenylpyrazol-5-one hetarylhydrazones: Synthesis and crystal structures

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4-Formyl-3-methyl-1-phenylpyrazol-5-one quinolin-2-yl-(H2L1) and benzothiazol-2-ylhydrazones (H2L2) were synthesized and studied. Quantum-chemical modeling of possible tautomers of the hydrazones was performed. Copper(II) complexes of the general formula [Cu(HL)(ROH)]Y (R = CH3, C2H5; Y=NO3, ClO4) were obtained and examined by IR and EPR spectroscopy, magnetochemistry, and X-ray diffraction. Additional coordination through the N atom of the pyrazole ring enables the complex molecules to form zigzag polymer chains linked by intermolecular hydrogen bonds.

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Correspondence to S. I. Levchenkov.

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Original Russian Text © L.D. Popov, S.I. Levchenkov, I.N. Shcherbakov, V.V. Minin, G.G. Aleksandrov, E.A. Ugolkova, V.V. Lukov, V.A. Kogan, 2013, published in Koordinatsionnaya Khimiya, 2013, Vol. 39, No. 12, pp. 743–750.

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Popov, L.D., Levchenkov, S.I., Shcherbakov, I.N. et al. Polymeric copper(II) complexes with 4-formyl-3-methyl-1-phenylpyrazol-5-one hetarylhydrazones: Synthesis and crystal structures. Russ J Coord Chem 39, 849–856 (2013).

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