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Mononuclear nickel(II) and copper(II) complexes with Schiff base ligands derived from 2,6-diformyl-4-methylphenol and S-methylisothiosemicarbazones |
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| Authors: | Julieta Gradinaru Yurii Simonov Sandro Zecchin David E Fenton |
| Institution: | a Institute of Chemistry of the Academy of Sciences of Moldova, str. Academiei, 3, MD-2028 Chisinau, Moldova b CNR-Istituto di Scienze e Tecnologie Molecolari, via Golgi 19, I-20133 Milano, Italy c Istituto CNR per l'Energetica e le Interfasi, Corso Stati Uniti 4, I-35127 Padova, Italy d Faculty of Chemistry, A. Mickiewicz University, 60-780 Poznań, Poland e Department of Chemistry, Dainton Building, The University of Sheffield, Sheffield S3 7HF, UK |
| Abstract: | Four new square-planar Ni(II) and Cu(II) complexes with N2O2] binding system were synthesized by metal-directed condensation of 2,6-diformyl-4-methylphenol with benzoyl or acetylacetone mono-S-methylisothiosemicarbazone. Only mononuclear “one-armed” complexes were obtained as a consequence of the different reactivity of the two carbonyl groups in the hydroxydialdehyde. The complexes were characterized by elemental analysis, EI MS and UV-Vis spectroscopy. The structural assignment was confirmed by X-ray diffraction analysis and NMR spectroscopy, for the Ni(II) complexes, and by ESR spectroscopy and magnetic measurements, for the Cu(II) complexes. |
| Keywords: | Ni(II) complexes Cu(II) complexes Square-planar complexes Tetradentate [N2O2] isothiosemicarbazide-based ligands |
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