scholarly journals Complexes cobalt(II), zinc(II) and copper(II) with some newly synthesized benzimidazole derivatives and their antibacterial activity

1999 ◽  
Vol 64 (5-6) ◽  
pp. 381-388 ◽  
Author(s):  
S.O. Podunavac-Kuzmanovic ◽  
V.M. Leovac ◽  
N.U. Perisic-Janjic ◽  
J. Rogan ◽  
J. Balaz
Keyword(s):  
Antibacterial Activity ◽  
Magnetic Susceptibility ◽  
General Formula ◽  
Elemental Analysis ◽  
Electronic Spectra ◽  
Erwinia Amylovora ◽  
Erwinia Carotovora ◽  
Molar Conductivity ◽  
Benzimidazole Derivatives ◽  
Tetrahedral Structure

The preparation and properties of some complexes of cobalt(II), zinc(II) and copper(II) with several newly synthesized benzimidazole derivatives (L) are reported. The complexes, of the general formula [MCl2L2] (M=Co(II), Zn(II)) and [CuCl2L(H2O]), have a tetrahedral structure. The complexes were characterized by elemental analysis, molar conductivity, magnetic susceptibility measurements, IR and absorption electronic spectra. The antibacterial activitiy of the benzimidazoles and their complexes was evaluated against Erwinia carotovora subsp. carotovora and Erwinia amylovora. The complexes were found to be more toxic than the ligands.

scholarly journals Preparation and Spectral Study of New Complexes of Some Metal Ions with 3,5-Dimethyl-1H-Pyrazol-1-yl Phenyl Methanone

2011 ◽  
Vol 8 (4) ◽  
pp. 1005-1011
Author(s):  
Baghdad Science Journal
Keyword(s):  
Magnetic Susceptibility ◽  
Elemental Analysis ◽  
Room Temperature ◽  
Molar Conductivity ◽  
The Other ◽  
Octahedral Structure ◽  
Tetrahedral Structure ◽  
Visible Spectra ◽  
Ft Ir ◽  
Uv Visible

Many complexes of 3,5-dimethyl-1H-pyrazol-1-yl phenyl methanone with Cr(III), Co(II), Ni(II), Cu(II) and Cd(II) were synthesized and characterized by FT-IR, UV/visible spectra, elemental analysis, room temperature magnetic susceptibility and molar conductivity. Cd(II) complex was expected to have tetrahedral structure while all the other complexes were expected to have an octahedral structure.

Synthesis and Characterisation of Bis(η5-methylcyclopentadienyl) N-Aryl-dithiocarbamato Chloro Titanium(IV) Compounds

1979 ◽  
Vol 34 (7) ◽  
pp. 949-951 ◽  
Author(s):  
N. K. Kaushik ◽  
B. Bhushan ◽  
G. R. Chhatwal
Keyword(s):  
Molecular Weight ◽  
Magnetic Susceptibility ◽  
General Formula ◽  
Elemental Analysis ◽  
Electronic Spectra ◽  
Probable Structure ◽  
Ammonium N

Abstract Some bis(η5-methylcyclopentadienyl) N-aryl-dithiocarbamato chloro titanium(IV) compounds of the general formula η5-(Mecp)2Ti(S2CNRH)Cl (R = phenyl; o-, m- and p-tolyl; p-methoxy phenyl; o- and p-ethoxy phenyl; o-, m- and p-chlorophenyl; p-bromophenyl and p-iodophenyl groups) have been prepared by the reaction of bis(η5-methylcyclopentadienyl) titanium(IV) dichloride with ammonium N-aryl-dithiocarbamates. A study of the molecular weight, conductance, infrared and electronic spectra, and magnetic susceptibility in addition to elemental analysis has been carried out to throw some light on the probable structure of these derivatives

scholarly journals Synthesis, physico-chemical characterization and biological activity of copper(ii) and nickel(ii) complexes with l-benzoyl-2-methylbenzimidazole derivatives

2002 ◽  
pp. 151-157 ◽  
Author(s):  
Sanja Podunavac-Kuzmanovic ◽  
Vukadin Leovac ◽  
Gordana Cetkovic ◽  
Sinisa Markov
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Magnetic Susceptibility ◽  
Biological Activity ◽  
Ir Spectra ◽  
Elemental Analysis ◽  
Chemical Characterization ◽  
Molar Conductivity ◽  
Bacillus Sp ◽  
Physico Chemical

Chlorides of copper(II) and nickel(ll) react with 1-benzoyl-2-methylbenzimidazole or 1-(4-chlorobenzoyl)-2-methylbenzimidazole to give complexes of the type [M(L)nCln(H20)?Cln (M = Cu or Ni; L = (1-benzoyl-2-methylbenzimidazole or 1-(4-chlorobenzoyl)-2-methylbenzimidazole; n=O, 1 or 2). The complexes were synthesized and characterized by elemental analysis, molar conductivity magnetic susceptibility measurements and IR spectra. These studies suggest that all the complexes possess an octahedral stereochemistry. The antibacterial activity of (1-benzoyl-2-methylbenzimidazole or 1-(4-chlorobenzoyl)-2-methylbenzimidazole and their complexes was evaluated against Escherichia coli and Bacillus sp.

scholarly journals Synthesis, Characterization and Thermal Studies of Fe(II), Co(II), Ni(II) and Cu(II) Complexes with bis-(4-benzylidenamino-phenyl)-methane Schiff base ligand

2021 ◽  
Vol 2063 (1) ◽  
pp. 012004
Author(s):  
Atared F. Hassan ◽  
Hiba H. Sabah ◽  
Afaq A. Turki
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
General Formula ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Thermal Studies ◽  
Molar Conductivity ◽  
Conductivity Measurements ◽  
Infra Red ◽  
Thermal Stable

Abstract A new series of Co(II), Fe(II), Cu(II) and Ni(II) complexes of Bis–(4-benzylidenamino-phenyl)-methane (L) have been prepared and characterized. The complexes conform to general formula [CoL(H2O)3] Cl2, [FeL(H2O)5]SO4.2H2O, [CuL(H2O)5] NO3 and [NiL(H2O)3Cl2], Infra red spectra and elemental analysis reveal uni-dentate coordination of Schiff base to metal ions. Molar conductivity measurements show that complexes (I, III) behave as 2:1 electrolyte while complex (II) behave as 1:1 electrolyte. The thermal studies for complexes shows that the complexes are thermal stable.

scholarly journals Synthesis, Characterization, and Antibacterial Activity of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) Complexes of Schiff's Base Type Ligands Containing Benzofuran Moiety

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
N. Shashidhar Reddy ◽  
B. S. Shankara ◽  
P. Murali Krishana ◽  
C. Basavaraj ◽  
B. Mahesh
Keyword(s):  
Antibacterial Activity ◽  
Metal Ions ◽  
Spectral Data ◽  
General Formula ◽  
Elemental Analysis ◽  
Magnetic Moments ◽  
Good Activity ◽  
Schiff’S Base ◽  
Elemental Data ◽  
Cu Complexes

Six new complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) with substituted benzofuran derivatives have been synthesized and characterized by elemental analysis, magnetic moments, conductance measurements, spectral characterization, and so forth. Elemental data coincide with the general formula MLC1n, where L = (E)-7-Methoxy-N1-(2,4,5-trimethoxy benzylidene) benzofuran-2-carbohydrazide (L1) or (E)-N1-(2,6-dichloro benzylidene)-7-methoxy benzofuran-2-carbohydrazide (L2), of the complexes. The ligands coordinate to the metal ions through the oxygen of the carbonyl group and the nitrogen of the hydrazine group. Electronic spectral data of the complexes suggests the probable geometry is octahedral in nature. All the complexes and ligands were screened for their antibacterial activity. Among them, Co, Ni, and Cu complexes of L2 showed good activity against all microbes.

scholarly journals Synthesis, Characterization and Biological Screening of Novel Metal(II) Complexes of 2-{[2-(5-Benzoyl-1H-benzotriazol-1-yl)-2-oxoethyl]amino}-5-bromobenzoic Acid

2021 ◽  
Vol 33 (4) ◽  
pp. 747-751
Author(s):  
P.S. DESAI ◽  
D.V. PAREKH
Keyword(s):  
Antibacterial Activity ◽  
Transition Metal ◽  
Ir Spectra ◽  
Elemental Analysis ◽  
Electronic Spectra ◽  
Nmr Spectra ◽  
Gram Negative Bacteria ◽  
Absorption Analysis ◽  
Biological Screening ◽  
Gram Negative

In this work, 5-bromoanthranilic acid was condensed with 1-(5-benzoyl-1H-1,2,3-benzotriazole-1-yl)-2-chloro-ethanone to form 2-{[2- (5-benzoyl-1H-benzotriazol-1-yl)-2-oxoethyl]amino}-5-bromobenzoic acid. The newly synthesized ligand and its metal(II) complexes with first transition metal series (Cu(II), Ni(II), Co(II), Zn(II) and Mn(II)) have been synthesized and characterized by using elemental analysis, infrared and electronic spectra. The IR spectra, NMR spectra and atomic absorption analysis show that the benzotriazole ligand formed chelates with metal in a 2:1 (ligand:metal) stochiometry. All the metal(II) complexes were screened for their antibacterial activity against Gram-positive and Gram-negative bacteria. Among the synthesized metal(II) complexes, Cu(II) complex showed the highest antibacterial activity.

scholarly journals Synthesis, Characterization and Antibacterial Activity of Mn(II), Co(II), Ni(II) and Cu(II) Complexes of 4-Carboxaldehyde Phenylhydrazone- 1-phenyl-3-methyl-2-pyrazolin-5-one

2010 ◽  
Vol 7 (4) ◽  
pp. 1375-1379
Author(s):  
R. N. Pandya ◽  
A. K. Rana ◽  
H. R. Dabhi ◽  
R. B. Patel ◽  
D. K. Bhoi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Magnetic Susceptibility ◽  
Metal Complexes ◽  
Elemental Analysis ◽  
Electrical Conductance ◽  
Octahedral Structure ◽  
Infrared Data

4-Carboxaldehyde-1-phenyl-3-methyl-2-pyrazolin-5-one condensed with phenylhydrazine to form ligand (HL). These metal complexes are of type [ML2(H2O)2] (M = Mn, Co, Ni and Cu). Elemental analysis, magnetic susceptibility, electrical conductance, electronic and infrared data suggest octahedral structure for the metal complexes. All the compounds were tested for their antibacterial activity. The result indicates that the growth of the tested organisms was inhibited by most of the compounds.

scholarly journals Synthesis, Characterization and Antibacterial of 2,3-Dihydrobenzo Thiazole-2-Carboxylic Acid Complexes with Some Selected Metal Ions

2015 ◽  
Vol 12 (4) ◽  
pp. 785-796
Author(s):  
Baghdad Science Journal
Keyword(s):  
Magnetic Susceptibility ◽  
Biological Activity ◽  
Carboxylic Acid ◽  
Elemental Analysis ◽  
Octahedral Geometry ◽  
Molar Conductivity ◽  
Dichloroacetic Acid ◽  
E Coli ◽  
Bivalent Ions ◽  
Bidentate Mode

A new ligand 2,3-dihydrobenzo [d] thiazole-2-carboxylic acid (L) has been prepared from the reaction of ortho amino phenyl thiol with dichloroacetic acid in mole ratio (1:1). It has been characterized by elemental analysis (C.H.N.), IR, UV- Vis.spectraand 1H, 13C-NMR. A new series complexes of the bivalent ions (Co, Ni, Cu, Pd, Cd, Hg and Pb) and the trivalent (Cr) have been prepared and characterized too. The structural has been established by elemental analysis (C.H.N.), IR, UV-Vis. spectra, molar conductivity, atomic absorption and magnetic susceptibility measurements. The synthesized complexes were prepared in (1:2) ratio correspond to (Co(II), Ni(II), Cu(II), Pd(II), Cd(II), Hg(II) and Pb(II) complexes while in case Cr(III) complex is (1:1) ratio (M:L). ?, Kf for (Cr(III), Co(II), Ni(II) and Cu(II)) were estimated too. The complexes showed characteristics octahedral geometry with the (O,N) ligand coordinated in bidentate mode except with Pd showed square planer. The study of biological activity of ligand (L) and its complexes showed various activities toward Staphylococcus aureusand E. coli.

scholarly journals Electronic Structure and Spectral Study of Some Five Coordinate Complexes of Copper (II)

2019 ◽  
Vol 35 (4) ◽  
pp. 1463-1468
Author(s):  
Birendra Kumar ◽  
Rekha Rani ◽  
Dayanand Prasad ◽  
Praveen Kumar Singh ◽  
Amit Kumar ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Elemental Analysis ◽  
Magnetic Moment ◽  
Electronic Spectra ◽  
Spectral Study ◽  
Metal Ion ◽  
Molar Conductivity ◽  
Trigonal Bipyramidal ◽  
Secondary Ligand

1-phenylazo-2-nephthol has been synthesized and used for complexation with Cu(II) metal ion along with pyridine, α-picoline, β- picoline, γ-picoline and water as secondary ligands. On the basis of elemental analysis and molar conductivity complexes were formulated as CuL2X [Where L is the prime ligand i.e 1-phenyl-azo-2-nephthol and X is the secondary ligand i.e. pyridine, α-picoline, β-picoline, and H2O.] The magnetic moment of these complexes (1.80 - 1.83 BM) indicates that these complexes are magnetically dilute. The appearance of 3 bands in the electronic spectra of complexes rules out the trigonal bipyramidal (D3h) symmetry arround Cu(II) ion in these complexes rather the electronic spectra favours square pyramidal (C4V) symmetry of these five coordinate complexes. The highest value of 10Dq clearly indicates the greater coordinating ability of α-picoline than pyridine, β-picoline and γ-picoline.

Synthesis, characterization, and biological activities of some transition metal(II) complexes with the thiosemicarbazone derived from 4-[1-(4-methylphenylsulfonyl)-1H-indol-3-yl]but-3-en-2-one

2006 ◽  
Vol 60 (3) ◽  
Author(s):  
J. Qu ◽  
G. Sun ◽  
L. Wang ◽  
L. Qu
Keyword(s):  
Biological Activity ◽  
Transition Metal ◽  
General Formula ◽  
1H Nmr ◽  
Elemental Analysis ◽  
Nmr Spectra ◽  
Biological Activities ◽  
Antitumour Activity ◽  
Molar Conductivity

AbstractA new 4-[1-(4-methylphenylsulfonyl)-1H-indol-3-yl]but-3-en-2-one thiosemicarbazone (HL) was synthesized derived from 4-[1-(4-methylphenylsulfonyl)-1H-indol-3-yl]but-3-en-2-one. Four transition metal(II) complexes of HL have been prepared. Elemental analysis, molar conductivity, IR, UV, 1H NMR spectra, and TG-DTA have been used to characterize these complexes. The complexes have the general formula ML2, where M = Zn, Cu, Co, and Ni. The ligand and its complexes have been studied for their possible biological activity including anti-inflammatory, antibacterial, and antitumour activity in vitro.

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