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Reddy, Venkata Ramana
- Synthesis, Spectral and Biological Studies of Cd (II) Complex of Schiff Base Ligand Derived from 3-Hydrazinylquinoxalin-2(1H)-One and 2-Hydroxy-3-Methoxybenzaldehyde
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Authors
Affiliations
1 Vasavi College of Engineering, Hyderabad, 500031, IN
2 Department of Chemistry, Jawaharlal Nehru Technological University Hyderabad, Hyderabad-500085, IN
1 Vasavi College of Engineering, Hyderabad, 500031, IN
2 Department of Chemistry, Jawaharlal Nehru Technological University Hyderabad, Hyderabad-500085, IN
Source
Asian Journal of Research in Chemistry, Vol 10, No 1 (2017), Pagination: 54-57Abstract
The Cd (II) complex of the tridentate Schiff base ligand, 3-(2-(2-hydroxy-3-methoxybenzylidene) hydrazinyl) quinoxalin-2(1H)-one (VHQO) derived from 3-hydrazinylquinoxalin-2(1H)-one and 2-hydroxy-3-methoxybenzaldehyde has been prepared and characterized by IR, UV-VIS, LCMS, CHN analysis ,thermo gravimetric analysis, magnetic susceptibility and conductivity measurements. The ligand behaved as uninegative, tridentate, N, N, O donor, coordinating to the metal ion via ring nitrogen, azomethine nitrogen and phenolic oxygen. The ligand formed a monomeric, 1:1 [Cd(VHQO)Cl] complex. The interactions between the metal complex and calf thymus DNA (CT-DNA) has been studied by absorption spectroscopy. The complex was also screened against two gram positive bacteria Staphyloccocus aureus and Bacillus subtillis, and four gram negative bacteria Escherichia coli, Pseudomonas aeroginosa, Klebsiella pneumonia and Proteus vulgaris. The results indicated moderate activity against Staphyloccocus aureus and Bacillus subtillis.Keywords
Schiff Base, Tridentate Ligand, Antibacterial Activity, DNA Binding.
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- Formation and Stability of Co(II), Ni(II), Cu(II) and Zn(II) Complexes of Pyridoxal Semicarbazone and Pyridoxal Thiosemicarbazone in Solution
Abstract Views :228 |
PDF Views:2
Authors
Affiliations
1 Department of Chemistry, Nizam College, OU, Hyderabad-500 001, IN
2 Department of Chemistry, Jawaharlal Nehru Technological University Hyderabad, Hyderabad-500 085, IN
1 Department of Chemistry, Nizam College, OU, Hyderabad-500 001, IN
2 Department of Chemistry, Jawaharlal Nehru Technological University Hyderabad, Hyderabad-500 085, IN
Source
Asian Journal of Research in Chemistry, Vol 9, No 12 (2016), Pagination: 626-628Abstract
The formation and stability of Pyridoxal semicarbazone (PLSC) and Pyridoxal thiosemicarbazone (PLTSC) Schiff base ligand (L) complexes of Co(II), Ni(II), Cu(II) and Zn(II) have been investigated by Irving-Rossotti pH-metric titration technique, at 30 ± 1°C and an ionic strength of 0.1M KNO3 in 70% v/v DMF-H2O medium. The acid dissociation constants (pKa) of the ligands and the stability constants of the metal complexes formed in solution were determined. The results indicate the formation of 1:1(ML) and 1:2(ML2) complexes in solution. The order of stability of the metal complexes with respect to the metal ions follows the Irwing - william's natural order, Co(II), Ni(II), Cu(II) > Zn(II).Keywords
Schiff Base, Transition Metals, pH Metry, Stability Constants.- Synthesis, Characterization, Equilibrium Studies and Antibacterial Studies of Co(II) Complex with Schiff Base Ligand Derived from Pyridoxal and 2,4-Dichlorobenzohydrazide
Abstract Views :607 |
PDF Views:5
Authors
Affiliations
1 Department of Chemistry, Nizam College, OU, Basheerbagh, Hyderabad-500001, Telangana, IN
2 Department of Chemistry, Jawaharlal Nehru Technological University Hyderabad, Kukatpally, Hyderabad-500085, Telangana, IN
1 Department of Chemistry, Nizam College, OU, Basheerbagh, Hyderabad-500001, Telangana, IN
2 Department of Chemistry, Jawaharlal Nehru Technological University Hyderabad, Kukatpally, Hyderabad-500085, Telangana, IN