Preparation of Zinc (II) and Cadmium (II) Complexes of the Tetradentate Schiff Base Ligand 2-((E)-(2-(2-(pyridine-2-yl)-ethylthio)ethylimino)methyl)-4-bromophenol (PytBrsalH)

Molecules

Lotf A. Saghatforoush²  Ali Aminkhani³  Sohrab Ershad¹  Ghasem Karimnezhad²  Shahriar Ghammamy⁴ 

[1] Department of Chemistry, Payame Noor University (PNU), Marand, Iran;Department of Chemistry, Payame Noor University (PNU), Khoy, Iran;Department of Chemistry, Islamic Azad University, Khoy Branch, Khoy, Iran;Department of Chemistry, Imam Khomeini International University, Qazvin, Iran

关键词: Tetradentate ligand;    Schiff base;    Unsymmetric;    Zinc;    Cadmium;    Complex;   

DOI  :  10.3390/molecules13040804

来源: mdpi

【 摘 要 】

We describe the synthesis and characterization of two new zinc (II) and cadmium (II) complexes of the tetradentate dissymmetric Schiff base ligand 2-((E)-(2-(2-(pyridine-2-yl)ethylthio)ethylimino)methyl)-4-bromophenol (PytBrsalH), prepared from 1-(2-pyridyl)-3-thia-5-aminopentane (pyta) and 5-bromosalicylaldehyde. The complexes were synthesized by treating an ethanolic solution of the ligand with equimolar amounts of appropriate metal salts in 1 M methanolic solution of NaOH or alternatively, by a more direct route in which the two reactants are added to a solution of the ligand immediately after formation of the latter and prior to any isolation. The complexes were characterized by elemental analysis, FTIR, ¹H-NMR, electronic spectra and molar conductivity. According to obtained data, the probable coordination geometries of zinc and cadmium in these complexes with mixed N, S and O donor atoms are tetrahedral- and octahedral-like, respectively. Both complexes were found to be 1:1 electrolyte systems in acetonitrile.

【 授权许可】

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