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    Cu(II), Co(II), Ni(II), Mn(II), and Fe(II) metal complexes containing N,N?-(3,4-diaminobenzophenon)-3,5-But2-salicylaldimine ligand: Synthesis, structural characterization, thermal properties, electrochemistry, and spectroelectrochemistry
    (Pergamon-Elsevier Science Ltd, 2010) Tas, E.; Kilic, A.; Durgun, M.; Kupecik, L.; Yilmaz, I.; Arslan, S.
    The synthesis, structure, spectroscopic and electro-spectrochemical properties of steric hindered Schiff-base ligand [N,N'-(3,4-benzophenon)-3,5-Bu-2(t)-salicylaldimine (LH2)] and its mononuclear Cu(II), Co(II), Ni(II), Mn(II) and Fe(II) complexes are described in this work. The new dissymmetric steric hindered Schiff-base ligand containing a donor set of NONO was prepared through reaction of 3,4-diaminobenzophenon with 3,5-Bu-2(t)-salicylaldehyde. Certain metal complexes of this ligand were synthesized by treating an ethanolic solution of the ligand with an equimolar amount of metal salts. The ligand and its complexes were characterized by FT-IR, UV-vis, H-1 NMR, elemental analysis, molar conductivity and thermal analysis methods in addition to magnetic susceptibility, electrochemistry and spectroelectrochemistry techniques. The tetradentate and mononuclear metal complexes were obtained by reacting N,N'-(3,4-benzophenon)-3,5-Bu-2(t)-salicylaldimine (LH2) with some metal acetate in a 1:1 mole ratio. The molar conductance data suggest metal complexes to be non-electrolytes. (C) 2009 Elsevier B.V. All rights reserved.
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    Öğe
    Dissymmetric tetradentate salicylaldimine Cu(II) and Co(II) complexes derived from 1,8-naphthalene and different salicylaldehydes
    (Bulgarian Acad Science, 2012) Kilic, A.; Tas, E.; Deveci, B.; Durgun, M.
    The synthesis, structure and spectroscopic properties of salicylaldimine Schiff base ligands (LnH2) (n = 1, 2, 3 and 4) (L1H2=N, N'-[1,8-naphthalene]-3-methylsalicylaldimine, L2H2 = N,N'-[1,8-naphthalene]-5-methylsalicylaldimine, L3H2 = N,N'-[1,8-naphthalene]-3-methoxy-salicylaldimine and L4H2= N,N'-[1,8-naphthalene]- 5-methoxysalicylaldimine), respectively and their mononuclear Cu(II) and Co(II) complexes [MLn] are described. Four new dissymmetric tetradentate salicylaldimine ligands containing a donor set of N2O2 were prepared by reaction of 1,8-naphthalene with different salicylaldehydes. Tetradentate Cu(II) and Co(II) complexes were obtained by reacting the ligands with Cu(Ac)(2)center dot H2O and Co(Ac)(2)center dot 4H(2)O in a 1:1 mole ratio. The ligands and their Cu(II) and Co(II) complexes were characterized by H-1-NMR, FT-IR, UV-Vis, elemental analysis, molar conductivity, magnetic susceptibility, X-ray powder analysis, and their morphology was studied by SEM measurements.
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    Öğe
    Synthesis and Characterization of an Unsymmetric Salicylaldimine Ligand Derived from 1-(2-Aminoethyl) piperazine and Investigation of Its Analytical Properties for the Extraction and Preconcentration of some Divalent Cations
    (Springer, 2011) Kilic, A.; Tegin, I.; Tas, E.; Ziyadanogullari, R.
    The synthetic, structural, spectroscopic and analytical properties of steric hindered Schiff-base ligand [N-(3,5-di-tert-butylsalicylaldimine)-1-(2-Aminoethyl) piperazine (HL)] and its mononuclear Cu(II), Co(II) and Ni(II) complexes are described. The new unsymmetric steric hindered Schiff base ligand containing a donor set of NONO was prepared by the reaction of 1-(2-Aminoethyl) piperazine with 3,5-di-tert-butylsalicylaldehyde. Certain metal complexes of this ligand were synthesized by treating an ethanolic solution of the ligand with an equimolar amount of metal salts. The ligand and its metal complexes were characterized by FT-IR, UV-Vis, H-1 NMR, elemental analysis, molar conductivity and magnetic susceptibility techniques. The reaction of this ligand in a 1: 2 mole ratio with metal acetate afforded mononuclear metal complexes. The molar conductivity (Lambda(M)) values of the metal complexes of Ni(II), Co(II) and Cu(II) were in the range of 6.4 to 9.8 Omega(-1) cm(2) mol(-1) at room temperature. Preconcentration and separation of Cu2+ from aqueous solution using N-(3,5-di-tert-butylsalicylaldimine)-1-(2-Aminoethyl) piperazine (HL) as a new extractant were studied. The extraction experiments were carried out at various pHs. While Cu2+ showed the highest extractability and selectivity at pH 7.0, extractions of Co2+ and Ni2+ were unsuccessful due to precipitate formation.
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    Öğe
    Synthesis, structural characterization, electrochemistry and spectroelectrochemistry of dinuclear copper(II) metal complexes stabilized by a tetradentate NOOO salicylaldimine ligands
    (Elsevier, 2009) Tas, E.; Onal, I. H.; Yilmaz, I.; Kilic, A.; Durgun, M.
    The synthesis, structure, spectroscopic and electro-spectrochemical properties of salicylaldimine Schiff-base ligands (LnH) (n = 1, 2, and 3) (L1H = N-[2-amino-8-hydroxyquinoline]-salicylaldimine, L2H = N-[2-amino-8-hydroxyquinoline]-5-bromosalicylaldimine and L3H = N-[2-amino-8-hydroxyquinoline]-5methoxysalicylaldimine), respectively, and their dinuclear copper(II) complexes [Cu-2(L-n)(2)] are described. Three new dissymmetric tetradentate salicylaldimine ligands containing a donor set of NOOO were prepared by reaction of 2-amino-8-hydroxyquinoline with different salicylaldehydes. The dinuclear copper(II) metal complexes of these ligands were synthesized by treating an ethanolic solution of the appropriate ligand with an equimolar amount of Cu(Ac)(2)center dot H2O. The ligands and their copper complexes were characterized by FT-IR, UV-vis, H-1 NMR, elemental analysis, molar conductivity, mass spectra and thermal analysis methods in addition to magnetic susceptibility and spectroelectrochemical techniques. The reaction of these ligands in a 1:1 mole ratio with copper(II) acetate afforded dinuclear Cu(II) metal complexes. The room temperature magnetic moments Of [Cu-2(L-n)(2)] complexes are found between 1.12 and 1.28 BM for per Cu(II) molecule. (C) 2009 Elsevier B.V. All rights reserved.