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Abstract:
Potential azomethine class of ligand(z)-4-((1H-indol-3-yl) methyleneamino)benzoic acid (IMABA) and its VO(II), Cr(III), Mn(II), Fe(III), Ni(II), Cu(II)and Cd(II) complexes were synthesized and characterized by elemental analysis, magnetic, conductance and spectroscopic techniques like UV, IR, 1H NMR and 13C NMR. Analysis established that the Schiff base is acting as monovalent bidentate ligand. Octahedral geometry was shown by Cr(III), Mn(II), Fe(III), Ni(II), Cu(II), and Cd(II) complexes while VO(II) complex displayed square pyramidal geometry. All the complexes and ligand were assayed for their antibacterial activity against gram positive as well as gram negative bacteria. Among them, VO(II), Fe(III), Ni(II), and Cd(II) complexes showed better activity against all microbes.
Journal , Chemical Science reviews and letters , National , 4 , 12-12-2015
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Abstract:
Manganese(II), Nickel(II) and Copper(II) complexes of the Schiff base, 3-formylindole-2-amino-5-bromobenzoicacid were prepared and characterized by various analytical techniques such as 1Hnmr, 13Cnmr, infrared, mass, electronic spectroscopy, elemental, magnetic and conductance studies. Structural evalution established that a stoichiometry exists between the metal and ligand and the Chelates possess general formula [ML(Ac)(H2O)3]. Geometry of all the complexes was found to be octahedral Thermal decomposition kinetics and mechanism of the metal chelates were studied by TGA and DTA techniques. The TG curves of Mn(II) and Ni(II) showed a three stage decomposition pattern and Cu(II) complex showed a two stage decomposition pattern, which is supported by DTA data.
Journal , International Journal of Engineering, Science and Mathematics, International, Volume 7 2018 , 01-02-2018
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Abstract:
A novel Schiff base derived from 3-formylindole and 3aminobenzoic acid and it’s Mn(II),Ni(II) and Cu(II) transition metal complexes were synthesized. Structures of the ligand and complexes were derived on the basis of various analytical techniques such as 1H NMR, 13C NMR, infrared, mass, electronic spectroscopy, elemental, magnetic and conductance studies. Structural evaluation established that a 1:1 stoichiometry exists between the metal and ligand and the chelates possess general formula [ML(Ac)(H2O)3]. Geometry of all the complexes was found to be octahedral. Thermal decomposition kinetics and mechanism of the metal chelates were studied by TG and DTA techniques. The TG curve of all chelates showed a two stage decomposition pattern in the TG trace which is supported by DTA data. The decomposition of these chelates was found to follow first order kinetics, but the first stage decomposition of Mn(II) was 2/3 order of reaction.
Journal, Chemical Science reviews and letters , National , 30-03-2015
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Evaluation on Structural and Thermoanalytical Properties of a Novel Hetrocyclic Schiff Base Derived
Abstract:
The corrosion inhibition efficiency of Schiff base, 3-formylindole-3-aminobenzoic acid (3FI3ABA) on mild steel (MS) in 1.0 M HCl solution have been investigated using weight loss measurements, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization studies. 3FI3ABA exhibited good inhibition on mild steel in HCl medium even at low concentrations and the inhibition efficiencies increases with increase in concentration of the inhibitor. The adsorption of inhibitor on the surfaces of the corroding metal obeys Langmiur isotherm. Polarization studies revealed that 3FI3ABA act as a mixed type inhibitor. Thermodynamic parameters (Kads, ∆G0 ads) were calculated using Langmiur adsorption isotherm.
Journal, IOSR Journal of Applied Chemistry, International, 12-12-2012
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Electrochemical and Gravimetric Corrosion Inhibition Investigations of a Heterocyclic Schiff Base De
Abstract:
A novel Schiff base derived from 3-formylindole and 2-aminobenzoic acid and it’s Mn(II), Ni(II) and Cu(II) transition metal complexes were synthesized. Structure of the ligand and complexes were derived on the basis of various analytical techniques such as 1Hnmr, 13Cnmr, infrared, mass and electronic spectroscopy, elemental, magnetic and electrical studies. The corrosion inhibition capacity of the Schiff base on mild steel was screened by Electronic Impedance Spectroscopy (EIS). Investigations showed that the Schiff base act as a good corrosion inhibitor even at low concentrations. The adsorption of inhibitor on the surfaces of mild steel obeys Langmiur isotherm. Thermodynamic parameters (Kads , ΔG°ads ) were calculated using Langmiur adsorption isotherm.
Journal , Oriental J Chem, International , 12-12-2012
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Chelating Efficacy and Corrosion Inhibition Capacity of Schiff Base Derived from 3-formylindole
Abstract:
The corrosion inhibition efficiencies of Schiff base 3-formylindole-4-aminobenzoic acid (3FI4ABA) on mild steel (MS) and copper in 1.0M HCl solution have been investigated using weight loss measurements, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization studies. The results show that inhibition efficiencies on both metals increase with increasing the concentration of the inhibitor. 3FI4ABA exhibited comparatively good inhibition towards mild steel in HCl medium even at low concentrations. The adsorption of inhibitor on the surfaces of the corroding metal mild steel and copper obeys the Langmuir isotherm. Polarization studies revealed that 3FI4ABA acts as a mixed-type inhibitor. Thermodynamic parameters (Kads, ΔG0 ads) were calculated using the Langmuir adsorption isotherm
Journal, ISRN Corrosion, International, 12-12-2012
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Abstract:
Heterocyclic compound (E)-2-((1H-indol-3-yl)metheneamino)-5-bromobenzoic acid (IMABBA) and its Mn(II), Ni(II) and Cu(II) complexes were synthesized and characterized by spectral, elemental, magnetic and conductance measurements. Investigations showed that IMABBA behaved as bidentate ligand during chelation. The octahedral geometry of the chelate was confirmed by magnetic and optical spectral studies. The antibacterial studies of the ligand and metal chelates were evaluated and reported.
Journal , International Journal of Research in Chemistry and Environment, International , 13-11-2014
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https://ijrce.org/index.php/ijrce/article/view/263
Abstract:
Manganese(II), Nickel(II) and Copper(II) complexes of the
Schiff base, 3-formylindole-2-amino-5-bromobenzoicacid
were prepared and characterized by various analytical
techniques such as 1Hnmr, 13Cnmr, infrared, mass,
electronic spectroscopy, elemental, magnetic and
conductance studies. Structural evalution established that a
stoichiometry exists between the metal and ligand and the
Chelates possess general formula [ML(Ac)(H2O)3
]. Geometry of all the complexes was found to be octahedral
Thermal decomposition kinetics and mechanism of the
metal chelates were studied by TGA and DTA techniques.
The TG curves of Mn(II) and Ni(II) showed a three stage
decomposition pattern and Cu(II) complex showed a two
stage decomposition pattern, which is supported by DTA
data.
Journal , International journal of Engineering,Science and Mathematics , International, 7, 17-07-2018
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https://www.ijmra.us/project%20doc/2018/IJESM_FEBRUARY2018/4643_pdf.pdf
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