Copper (II) and zinc (II) complexes with Hydrazone: Synthesis, crystal structure, Hirshfeld surface and antibacterial activity

PHO Santiago, MB Santiago, CHG Martins… - Inorganica Chimica …, 2020 - Elsevier
PHO Santiago, MB Santiago, CHG Martins, CC Gatto
Inorganica Chimica Acta, 2020•Elsevier
The present study reports the synthesis and characterization of six Cu (II) and Zn (II)
complexes with 2-cetylpyridinenicotinichydrazone (HL). The characterization of the
complexes were applied by conductivity measurements and spectroscopic techniques (FT-
IR, UV–Vis, ESI (+)-MS and NMR 1 H). Four complexes have been studied by single crystal
X-ray diffraction,[Cu (L) 2](1),[Zn (L) 2](2),[CuCl 2 (HL)](3) and [CuBr 2 (HL)](4). Important
interactions upon the molecular packing were also performed by the analysis of their …
Abstract
The present study reports the synthesis and characterization of six Cu(II) and Zn(II) complexes with 2-cetylpyridinenicotinichydrazone (HL). The characterization of the complexes were applied by conductivity measurements and spectroscopic techniques (FT-IR, UV–Vis, ESI(+)-MS and NMR 1H). Four complexes have been studied by single crystal X-ray diffraction, [Cu(L)2] (1), [Zn(L)2] (2), [CuCl2(HL)] (3) and [CuBr2(HL)] (4). Important interactions upon the molecular packing were also performed by the analysis of their Hirshfeld surfaces and compared to the 2D-fingerprint plots. The characterizations indicates the formation of mononuclear Cu(II) and Zn(II) complexes with the hydrazone ligand coordinated to the metal ions in tridentate mode through the NNO chelating system. The antibacterial activity of HL and its metal complexes was tested against cariogenic bacteria strains.
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