scholarly journals Biological Role of Cobalt(II), Copper(II) and Nickel(II) Metal Ions on the Antibacterial Properties of Some Nicotinoyl-Hydrazine Derived Compounds

1997 ◽  
Vol 4 (2) ◽  
pp. 69-74 ◽  
Author(s):  
Zahid H. Chohan ◽  
Syed K. A. Sherazi
Keyword(s):  
Metal Ions ◽  
Metal Complexes ◽  
Bacterial Species ◽  
Analytical Data ◽  
Antibacterial Properties ◽  
Biological Role

Several cobalt(II), copper(II) and nickel(II) complexes of nicotinoylhydrazine-derived compounds were prepared and characterised by physical, spectral and analytical data. These compounds and their complexes have proven to be antibacterial. The screening data show the metal complexes to be more potential/bactericidal than the uncomplexed compounds against one or more bacterial species.

scholarly journals Biological Role of Anions (Sulfate, Nitrate , Oxalate and Acetate) on the Antibacterial Properties of Cobalt (II) and Nickel(II) Complexes With Pyrazinedicarboxaimide Derived, Furanyl and Thienyl Compounds

1999 ◽  
Vol 6 (2) ◽  
pp. 95-99 ◽  
Author(s):  
Zahid H. Chohan ◽  
M. Praveen
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Metal Ion ◽  
Bacterial Species ◽  
Analytical Data ◽  
Antibacterial Properties ◽  
Biologically Active ◽  
And Staphylococcus Aureus ◽  
Definitive Role

A number of biologically active complexes of cobalt(II) and nickel(II) with pyrazinedicarboxaimido derived thienyl and furanyl compounds having the same metal ion but different anions such as sulphate, nitrate, oxalate and acetate have been synthesized and characterized on the basis of their physical, spectral and analytical data. In order to evaluate the role of anions on their antibacterial properties, these ligands and their synthesized metal complexes with various anions have been screened against bacterial species Escherichia coil,Pseudomonas aeruginosa and Staphylococcus aureus. The title studies have proved a definitive role of anions in increasing the antibacterial properties.

scholarly journals Biologically Active Transition Metal Chelates of Ni(II), Cu(II) and Zn(II) With 2-Aminothiazole-Derived Schiff-bases: Their Synthesis, Characterization and the Role of Anions (NO3 , SO42− , C2O42- and CH3CO2− ) on Their Antibacterial Properties

1999 ◽  
Vol 6 (3) ◽  
pp. 187-192 ◽  
Author(s):  
Zahid H. Chohan
Keyword(s):  
Schiff Bases ◽  
Metal Ion ◽  
Bacterial Species ◽  
Analytical Data ◽  
Antibacterial Properties ◽  
Metal Chelates ◽  
Biologically Active ◽  
Transition Metal Chelates ◽  
Active Transition

Biologically active nickel(ll), copper(ll) and zinc(ll) chelates with thiazole-derived nitro- and chlorosalicylaldehyde Schiff-bases having the same metal ion but different anions, e.g. nitrate, sulfate, oxalate and acetate have been synthesized and characterized on the basis of their physical, spectral and analytical data. In order to evaluate the possible participating role of anions on the antibacterial properties, these ligands and their synthesized metal chelates with various anions have been screened against bacterial species Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus.

scholarly journals Synthesis, Characterization and Role of Anions (Nitrate, Sulphate, Oxalate and Acetate) \in the Biological Activity of Hydrazine Derived Compounds and Their Metal Chelates

1997 ◽  
Vol 4 (6) ◽  
pp. 327-332 ◽  
Author(s):  
Zahid H. Chohan ◽  
S. K. A. Sherazi
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Biological Activity ◽  
Metal Ion ◽  
Bacterial Species ◽  
Analytical Data ◽  
Metal Chelates

Hydrazine derived compounds and its Co(II), Cu(II) and Ni(II) chelates having the same metal ion but different anions (e.g., nitrate, sulphate, oxalate and acetate) have been synthesised and characterised by their physical, spectral and analytical data. In order to evaluate the participating role of anions in the antibacterial activity, these synthesised ligands and its metal chelates have been screened against bacterial species such as Staphylococcus aureous, pseudomonas aeruginosa, Klebsiella pneumonae and Proteus vulgarus, and the results are reported.

scholarly journals Intraparticulate speciation analysis of soft nanoparticulate metal complexes. The impact of electric condensation on the binding of Cd2+/Pb2+/Cu2+by humic acids

2016 ◽  
Vol 18 (15) ◽  
pp. 10049-10058 ◽  
Author(s):  
Raewyn M. Town ◽  
Herman P. van Leeuwen
Keyword(s):  
Humic Acid ◽  
Metal Ions ◽  
Metal Complexes ◽  
Humic Acids ◽  
Speciation Analysis ◽  
The Impact

The drastic role of electrostatics in the binding of metal ions by soft charged nanoparticulate humic acid complexants is demonstrated.

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