A new vic-dioxime ligand containing two azo substituents and its mononuclear nickel(II), cobalt(II), and copper(II) complexes; synthesis, characterization, spectroscopic and biological studies

Kurtoğlu, Mükerrem; Purtaş, Fatih; Toroğlu, Sevil

doi:10.1007/s11243-008-9098-3

Cited by 23 publications

(8 citation statements)

References 60 publications

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“…This increased lipophilicity enhances the penetration of the complexes into lipid membranes and blocks the metal binding sites on enzymes of microorganisms. The results in this work are accord with those reported previously that the complexes have more antibacterial activity than the corresponding free ligands [36,37].…”

Section: Resultssupporting

confidence: 93%

Syntheses, crystal structures and antibacterial activities of azido-bridged cobalt(III) complexes with Schiff bases

Zhu

2010

Transition Met Chem

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Two end-on azido-bridged Co(III) complexes, [Co 3 (L1) 2 (l 1,1 -N 3 ) 4 (N 3 ) 2 (OH 2 )(OCH 2 CH 3 )]Á0.5H 2 O (1) and [Co 2 (L2) 2 (l 1,1 -N 3 ) 2 (N 3 ) 2 ] (2), where L1 and L2 are the deprotonated form of 5-methoxy-2-[(2-morpholin-4-ylethylimino)methyl]phenol and 2-ethoxy-6-[(2-isopropylaminoethylimino)methyl]phenol, respectively, were prepared and structurally characterized by physicochemical and spectroscopic methods and single crystal X-ray determination. Complex (1) is a trinuclear Co compound, while complex (2) is a centrosymmetric dinuclear Co compound. In both complexes, the Co atoms are in octahedral coordination. The preliminary biological tests show that the complexes have excellent antibacterial activity.

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Section: Resultssupporting

confidence: 93%

Syntheses, crystal structures and antibacterial activities of azido-bridged cobalt(III) complexes with Schiff bases

Zhu

2010

Transition Met Chem

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“…The IR spectrum of the free Schiff base ligand exhibited a band at 3374 cm −1 which is assigned to ν (OH) of oxime group [ 27 ]. This band remains more or less at the same position in all the complexes indicating the nonparticipation of this OH group in bonding.…”

Section: Resultsmentioning

confidence: 99%

Metal (II) Complexes Derived from Naphthofuran-2-carbohydrazide and Diacetylmonoxime Schiff Base: Synthesis, Spectroscopic, Electrochemical, and Biological Investigation

Sumathi

Halli

2014

Bioinorganic Chemistry and Applications

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A new Schiff base and a new series of Co(II), Ni(II), Cu(II), Cd(II), and Hg(II) complexes were synthesized by the condensation of naphthofuran-2-carbohydrazide and diacetylmonoxime. Metal complexes of the Schiff base were prepared from their chloride salts of Co(II), Ni(II), Cu(II), Cd(II), and Hg(II) in ethanol. The ligand along with its metal complexes have been characterized on the basis of analytical data, IR, electronic, mass, 1HNMR, ESR spectral data, thermal studies, magnetic susceptibility, and molar conductance measurements. The nonelectrolytic behaviour of the complexes was assessed from the measured low conductance data. The elemental analysis of the complexes confirm the stoichiometry of the type CuL2Cl2 and MLCl2 where M = Ni(II), Co(II), Cd(II), and Hg(II) and L = Schiff base. The redox property of the Cu(II) complex was investigated by electrochemical method using cyclic voltammetry. In the light of these results, Co(II), Ni(II), and Cu(II) complexes are assigned octahedral geometry, Cd(II), and Hg(II) complexes tetrahedral geometry. In order to evaluate the effect of metal ions upon chelation, both the ligand and its metal complexes were screened for their antibacterial and antifungal activities by minimum inhibitory concentration (MIC) method. The DNA cleaving capacity of all the complexes was analysed by agarose gel electrophoresis method.

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“…12,13 They have also attracted attention due to their possible antimicrobial applications. 14,15 The ortho-hydroxy-aryloximes act as excellent bidentate ligands through the nitrogen and oxygen donor atoms. Their metal complexes are well-recognized extractants that find industrial applications in extractive metallurgy and separation science.…”

Section: −9mentioning

confidence: 99%

Synthesis, spectroscopic characterization and genotoxicity of a new group of azo-oxime metal chelates

Cabir¹

2013

Turk J Chem

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The performance of a 118-kW tractor fuelled by pure biodiesel was monitored during a long-term field experiment with approximately 800 h of engine function. The objective was to demonstrate that B100, a pure biodiesel fuel, is a viable alternative to traditional diesel oil in terms of long-term mechanical reliability. A bench test on the new engine, performed by attaching a test stand to the power take-off of the tractor, showed an expected reduction in power (-9%) and torque (-7%) and an increase in specific consumption (+13%) when biodiesel was used as a complete substitute to diesel oil. Furthermore, with the same setup, the exhaust gas had a Bosch smoke index equal to 50% of the value for the same engine fuelled with diesel oil. After these initial tests, the tractor was set up for normal field operations, in which both the engine curves and lubricant quality were periodically monitored. These surveys indicated no significant reduction in engine performance; however, the lubricant was consequently diluted and contaminated by biodiesel, which caused the lubricant properties to considerably worsen. However, on the basis of the chemical-physical analysis, reducing the oil change interval from 200 h (manufacturer's indications for the engine when operating with diesel oil) to 100 h would compensate for this progressive quality decline. At the end of the trials, the engine was disassembled to check the condition of its components; wear and lacquer-like coating phenomena were observed, and their levels were acceptable. The obtained results demonstrated that B100 can effectively substitute for diesel oil in a standard compression-ignition engine: the power change is not perceptible during normal operation of a tractor, and no particular problem will arise in the engine during its life if the lubricant is changed every 100 h.

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A new vic-dioxime ligand containing two azo substituents and its mononuclear nickel(II), cobalt(II), and copper(II) complexes; synthesis, characterization, spectroscopic and biological studies

Cited by 23 publications

References 60 publications

Syntheses, crystal structures and antibacterial activities of azido-bridged cobalt(III) complexes with Schiff bases

Syntheses, crystal structures and antibacterial activities of azido-bridged cobalt(III) complexes with Schiff bases

Metal (II) Complexes Derived from Naphthofuran-2-carbohydrazide and Diacetylmonoxime Schiff Base: Synthesis, Spectroscopic, Electrochemical, and Biological Investigation

Synthesis, spectroscopic characterization and genotoxicity of a new group of azo-oxime metal chelates

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