Abstract
The present work reports the synthesis and structural elucidation of six novel copper(II) complexes with 2-acetylpyridine semicarbazone (HL1) and 2-acetylpyridine N(4)-phenyl semicarbazone (HL2). In all compounds, the semicarbazone ligands were find tridentate with NNO-donor atoms. The single crystal X-ray diffraction analysis showed the influences of the different copper salt starting reagent in the crystal structures. A packing architectures analysis has been undertaken to delineate the role of relevant noncovalent interactions. The π···π stacking interactions and hydrogen bonds were analyzed using the Hirshfeld surface and fingerprint plots. In addition, the compounds were also characterized by physicochemical and spectroscopic methods.
Graphic abstract
A new ligand and six copper(II) complexes of semicarbazone derivatives have been synthesized and their crystal structures have been studied. Spectroscopy experiments and Hirshfeld Surface were analyzed.
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Acknowledgements
Financial support received from FAPDF (Process No. 0193.001545/2017). The authors wish to thank for Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001 for fellowships, UnB, FINEP/CTINFRA and FAPDF.
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Gatto, C.C., Lima, F.C. & Miguel, P.M. Copper(II) complexes with semicarbazones: synthesis, characterization and noncovalent interactions in their crystal structures. J Chem Sci 132, 146 (2020). https://doi.org/10.1007/s12039-020-01847-5
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DOI: https://doi.org/10.1007/s12039-020-01847-5