Synthesis, characterization, and antimicrobial activities of nickel(II) and copper(II) Schiff-base complexes

Rajasekar, M.; Sreedaran, S.; Prabu, R.; Narayanan, V.; Raman, Jegadeesh; Raaman, Nanjian; Rahiman, A. Kalilur

doi:10.1080/00958970903296362

Cited by 103 publications

(32 citation statements)

References 40 publications

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“…e studies revealed that the compound exists in two major tautomeric forms and the Schiff base exhibits positive absorption and �uorescent solvatochromism and displays dual �uorescence with large stoke shi�s. Rajasekar et al [14] have investigated Ni(II) and Cu(II) metal complexes derived from salicylaldehyde/5-methylsalicylaldehyde and diaminomaleonitrile (DAMN). In their work antibacterial activity was investigated and square planar geometry was proposed for Ni(II) and Cu(II) complexes.…”

Section: Introductionmentioning

confidence: 99%

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Anitha¹,

Sheela

Tharmaraj

et al. 2013

International Journal of Inorganic Chemistry

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New complexes of 2,3-bis(5-(4-chlorophenyl)diazenyl)-2-hydroxybenzylideneamino)maleonitrile (CDHBDMN) with VO(II), Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) were synthesized and characterized by analytical and physicochemical techniques, that is, elemental analyses, molar conductivity, UV, IR, EPR, 1 H-NMR spectra, magnetic susceptibility and also by aid of scanning electron microscopy (SEM), nonlinear optical study (NLO), �uorescence spectral studies, and solvatochromic behaviors. Electronic and magnetic susceptibility measurements of the complexes indicate square pyramidal geometry for VO(II), octahedral for Ni(II), and square planar geometry for all the other complexes. e EPR spectral data provide information about their structures on the basis of Hamiltonian parameters and the degree of covalency. ese metal complexes were also tested for their antibacterial and antifungal activities to assess their inhibiting potential. Metal-mediated �uorescence enhancement is observed on complexation of the azo Schiff base ligand. e synthesized compounds were investigated for nonlinear optical properties, and the surface morphology of the Cu(II) complex was studied by scanning electron microscopy.

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Section: Introductionmentioning

confidence: 99%

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Anitha¹,

Sheela

Tharmaraj

et al. 2013

International Journal of Inorganic Chemistry

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“…The phenolic groups in the free ligands exhibit strong bands at about 1,210 cm -1 ; however, the bands appear at lower wave numbers (1,183 cm -1 for (1) and 1,181 cm -1 for (2)) in the complexes, indicating the coordination of the phenolate O atoms. Other weak absorption bands in the region 470-430 cm -1 for both complexes can be assigned to the Co-O and Co-N bonds [30,31].…”

Section: Resultsmentioning

confidence: 96%

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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“…These complexes were characterized with the help of various physicochemical techniques like IR, magnetic susceptibilities, elemental analysis and conductance measurements. Recently, a wide varieties of the Cu(II), Ni(II) and VO(II) complexes of Schiff base derivatives including compartmental and macrocyclic complexes was tested in vitro for their antibacterial and antifungal activities against human pathogenic bacteria [using disc diffusion method(DD)] [8][9][10] . The structure has been dibasic with four nitrogen atoms and can coordinate with two metal ions to form binuclear Cu(II), Ni(II) and VO(II) complexes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, Electrochemical and Antimicrobial Activity of Macrocyclic Binuclear Cu(II), Ni(II) and VO(II) Schiff Base Complexe

D¹,

Vedanayaki²,

Rajavel³

2013

Chem Sci Trans

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). Structural characterization of the complexes were achieved by several physicochemical methods, namely elemental analysis, electronic spectra, infrared, EPR, cyclic voltammetry, molar conductivity and magnetic susceptibility measurements. A square planar binuclear structure was proposed for the perchlorate anions in Cu(II) and Ni(II) complexes. Whereas the square pyramidal environment around the VO(II) center. The Schiff base complexes were investigated for antibacterial and antifungal properties of gram-positive bacteria (staphylococcus auerus), gramnegative bacteria (pseudomonas fluorescens) and fungi (Aspergillus fumigatus) were used in this study to assess their antimicrobial properties. The results showed that this skeletal framework exhibit marked potency as antimicrobial agents.

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Synthesis, characterization, and antimicrobial activities of nickel(II) and copper(II) Schiff-base complexes

Cited by 103 publications

References 40 publications

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

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

Synthesis, Characterization, Electrochemical and Antimicrobial Activity of Macrocyclic Binuclear Cu(II), Ni(II) and VO(II) Schiff Base Complexe

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