One-pot synthesis, structural characterization, UV–Vis and electrochemical analyses of new Schiff base complexes of Fe(III), Ni(II) and Cu(II)

• Published in: Journal of molecular structure 2015-11, Vol.1100, p.264-271
• Main Authors: Back, Davi Fernando, de Oliveira, Gelson Manzoni, Fontana, Liniquer Andre, Ramão, Brenda Fiorin, Roman, Daiane, Iglesias, Bernardo Almeida
• Format: Article
• Language: English
• Subjects: Peroxidase mimetization; Schiff bases; Schiff bases complexes
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2015.07.050

The complexes [Ni(Pyr2tetam−2H)]·2H2O (1) (Pyr2tetam = (pyridoxyl)2-N1,N4-triethylenetetramine), [Fe(Pyr2tetam−2H)](ClO4)·H2O (2) and [Cu(Pyrtetam−H)](ClO4) (3) (Pyrtetam = pyridoxyl-N1-triethylenetetramine) were obtained through one pot reactions of triethylenetetramine, pyridoxal chloridrate, triethylamine and the metal salts Ni(ClO4)2·6H2O, Fe(ClO4)2·6H2O and Cu(ClO4)2·6H2O. In complexes 1 and 2 the metal centers present a distorted octahedral coordination, while complex 3 shows a square pyramidal configuration. The structures were characterized through X-ray diffractometry, IR and UV–Vis spectra. Cyclic voltammograms of the title compounds are also presented and discussed. •One pot synthesis of three Schiff bases complexes.•X-ray structural characterization of all compounds.•The structures were co-characterized through IR and UV–Vis spectra.•Cyclic voltammograms of the title compounds are also presented and discussed.