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Tümer, Mehmet; Çelik, Cumali; Köksal, Hüseyin; Serın, Selahattın

doi:10.1023/a:1006982622965

Cited by 73 publications

(21 citation statements)

References 15 publications

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“…The i.r. spectra of the Schiff bases exhibit bands in the 1350-1255 cm )1 region assignable to the phenolic m(CAO) vibration [22,23]. In the complexes, this vibration shifts to lower regions and their peak intensity due to the m(CAOH) vibration decreases.…”

Section: Resultsmentioning

confidence: 99%

Mixed-ligand Copper(II) Complexes: Investigation of their Spectroscopic, Catalysis, Antimicrobial and Potentiometric Properties

Tümer

Deligonul

Gölcü

et al. 2006

Transition Met Chem

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Schiff base ligands HL 1 -HL 6 have been prepared from the reaction of 2,6-diformyl-4-t-butylphenol and 2,6-diformyl-4-methylphenol with various aromatic amines in ethanolic solution. The Schiff base ligands 2,2¢-dipyridine (dp) mixed-ligand Cu II complexes have been obtained. Mixed-ligand Cu II complexes containing the dp ligand have ionic nature and they conduct the electricity in solution media. The complexes have been obtained in two different forms: one of them is [Cu 2 (L n )Cl 3 ] (n: 1, 2, 3, 4, 5 and 6) and other complexes have the general formula [Cu 2 (L n )(dp) 2 ]3Cl. Ligands and their complexes have been characterized by elemental analyses, FT-IR, electronic spectra, molar conductance, 1 H( 13 C)-n.m.r. and mass spectral data. Their stoichiometric protonation constants have been determined potentiometrically in dioxan using a combined pH electrode at 25°C, under a nitrogen atmosphere. For the calculation of the protonation constants, PKAS computer programme has been used. The effects of the substituents on the protonation constants and the additivities of these effects are discussed. The antimicrobial activity studies of the ligands and their complexes have been studied against the Bacillus megaterium, Micrococcus luteus, Corynebavterium xenosis, Enterococcuc faecalis, bacteria and Saccoramyces cerevisia, yeast. The catalytic properties of the complexes have been studied on the ascorbic acid, catechol and 2,6-di-t-butylphenol substrates. Thermal behaviour of the complexes has been studied by thermal techniques.

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Section: Resultsmentioning

confidence: 99%

Mixed-ligand Copper(II) Complexes: Investigation of their Spectroscopic, Catalysis, Antimicrobial and Potentiometric Properties

Tümer

Deligonul

Gölcü

et al. 2006

Transition Met Chem

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“…spectral bands of the NaP-DTC and the corresponding metal complexes are given in Table 3. The m(CS) asymetric stretching bands are located prominently in the range 1000-1250 cm )1 in the sodium salt of the propranololdithiocarbamate and all the metal complexes as a doublet, while the symmetric m(CS) bands appear at approximately 771.5 cm )1 [30,31]. These bands are considered indicative of DTC acting as a bidentate ligand [32].…”

Section: Resultsmentioning

confidence: 99%

Transition Metal Complexes of Propranolol Dithiocarbamate: Synthesis, Characterization, Analytical Properties and Biological Activity

Gölcü

2006

Transition Met Chem

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Propranolol dithiocarbamate (PDTC) and its complexes with Cu(II), Co(II), Ni(II), Zn(II) and Cd(II) have been synthesized and characterized by elemental analyses, FT-IR, electronic spectra, atomic absorption spectra, molar conductance, mass and 1 H-n.m.r. spectral data. Information on the stoichiometry of the complexes was obtained from the continuous variation method (Job's method). The thermal decomposition behaviour of PDTC metal complexes was investigated in a nitrogen atmosphere using TG and DTA techniques. The antimicrobial activity studies of the metal complexes have been recorded against the Bacillus megaterium, Bacillus brevis, Yersinia enterocolitica, Micrococcus luteus, Pseudomonas aeruginosa, Enterococcus faecalis, Kluyveromyces marxianus, Candida tropicalis, Candida albicans and Kluvyeromyces fragilis.

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“…[27] The bands appearing at ~1604-1610 cm -1 are due to azomethine group. [28] IR absorption bands in the 1645-1655 cm -1 region in the complexes can be attributed to the C=O stretching vibrations. The strong absorption bands in the 2800-3100 cm -1 region are related to (C-H) vibrations.…”

Section: Infrared Spectral Studiesmentioning

confidence: 91%

Symmetrical and Unsymmetrical Schiff Bases Derived from 3,4-Diaminobenzophenone: Synthesis and Thermodynamics of Five Coordinated Tertiaryphosphine Cobalt(III) Complexes

Mohammadi¹,

Asadi²,

Khah³

et al. 2016

Croat. Chem. Acta

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Cited by 73 publications

References 15 publications

Mixed-ligand Copper(II) Complexes: Investigation of their Spectroscopic, Catalysis, Antimicrobial and Potentiometric Properties

Mixed-ligand Copper(II) Complexes: Investigation of their Spectroscopic, Catalysis, Antimicrobial and Potentiometric Properties

Transition Metal Complexes of Propranolol Dithiocarbamate: Synthesis, Characterization, Analytical Properties and Biological Activity

Symmetrical and Unsymmetrical Schiff Bases Derived from 3,4-Diaminobenzophenone: Synthesis and Thermodynamics of Five Coordinated Tertiaryphosphine Cobalt(III) Complexes

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