title: Synthesis, characterization and properties of some divalent metal(II) complexes: their electrochemical, catalytic, thermal and antimicrobial activity studies.
abstract: In this study, we synthesized the amine compound 2-(2-aminoethyliminomethyl)phenol (H(3)A) as the starting material, and then we prepared the polydentate Schiff base ligands from the reactions of the amine compound (H(3)A) with phtaldialdehyde (H(2)L), 4-methyl-2,6-di-formlyphenol (H(3)L(1)) and 4-t-butyl-2,6-di-formylphenol (H(3)L(2)) in the ethanol solution. Moreover, the complexes Cd(II), Cu(II), Co(II), Ni(II), Zn(II) and Sn(II) of the ligands H(2)L, H(3)L(1) and H(3)L(2) have been prepared. All compounds have been characterized by the analytical and spectroscopic methods. In addition, the magnetic susceptibility and molar conductance measurements have been made. The catalytic properties of the mono- and binuclear Co(II) and Cu(II) complexes have been studied on the 3,5-di-tert-butylcatechol (3,5-DTBC) and ascorbic acid (aa) as a substrate. The oxidative C-C coupling properties of the Co(II) and Cu(II) complexes have been investigated on the sterically hindered 2,6-di-tert-butylphenol (dtbp). The antimicrobial activity properties of the ligands and their mono- and binuclear complexes have been studied against the bacteria and fungi. The results have been compared to the antibacterial and fungi drugs. The TGA curves show that the decomposition takes place in three steps for all complexes. Electrochemical properties of the complexes Cu(II) and Ni(II) have been investigated for the first time in acetonitrile by cyclic voltammetry.
authors.affiliation: University of Kahramanmaraş Sütçü Imam, Faculty of Science and Arts, Department of Chemistry, 46100 Kahramanmaraş, Turkey. mtumer@ksu.edu.tr
authors.forename: Mehmet
authors.initials: M
authors.lastname: Tümer
authors.forename: Duygu
authors.initials: D
authors.lastname: Ekinci
authors.forename: Ferhan
authors.initials: F
authors.lastname: Tümer
authors.forename: Akif
authors.initials: A
authors.lastname: Bulut
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D001205:Ascorbic Acid / Q000737:chemistry; D002384:Catalysis; D002396:Catechols / Q000737:chemistry; D002413:Cations, Divalent; D004553:Electric Conductivity; D004563:Electrochemistry; D000431:Ethanol / Q000737:chemistry; D005658:Fungi / Q000145:classification / Q000187:drug effects; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D008024:Ligands; D008280:Magnetics; D019216:Metals, Heavy / Q000138:chemical synthesis / Q000737:chemistry* / Q000378:metabolism; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D010084:Oxidation-Reduction; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D012997:Solvents / Q000737:chemistry; D013237:Stereoisomerism; D013379:Substrate Specificity; D013818:Thermogravimetry
chemical_list: D000097:Acetonitriles; D000900:Anti-Bacterial Agents; D002396:Catechols; D002413:Cations, Divalent; D008024:Ligands; D019216:Metals, Heavy; D012545:Schiff Bases; D012997:Solvents; C054068:3,5-di-tert-butylcatechol; D000431:Ethanol; D001205:Ascorbic Acid; C032159:acetonitrile