scholarly journals Transition metal complexes with thiosemicarbazide-based ligands, Part 49: New complexes of iron(III) with deprotonated tridentate Schiff base - pyridoxal derivatives

2005 ◽  
Vol 70 (2) ◽  
pp. 187-200 ◽  
Author(s):  
Ljiljana Jovanovic ◽  
Violeta Jevtovic ◽  
Vukadin Leovac ◽  
Luka Bjelica
Keyword(s):  
Schiff Base ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Solution Equilibria ◽  
Electrochemical Processes ◽  
Tridentate Schiff Base

Three new bis(ligand) iron(III) complexes were prepared with the deprotonated ONX ligands (X = O,S,N), pyridoxal semi-, thiosemi- and S-methylisothiosemicarbazones (H2L1, H2L2 and H2L3, respectively) of the formulas [Fe(HL1,2)L1,2].4H2O and [Fe(HL3)2]OAc.2H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, as well as by IR and UV-vis spectra. Detailed voltammetric investigations were carried out in DMF solutions in the presence of several supporting electrolytes to study the nature of the electrochemical processes and solution equilibria.

scholarly journals Transition metal complexes with thiosemicarbazide-based ligands, part 47: Synthesis, physicochemical and voltammetric characterization of iron(III) complexes with pyridoxal semi-, thiosemi- and S-meth

2003 ◽  
Vol 68 (12) ◽  
pp. 929-942 ◽  
Author(s):  
Violeta Jevtovic ◽  
Ljiljana Jovanovic ◽  
Vukadin Leovac ◽  
Luka Bjelica
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
High Spin ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Solution Equilibria ◽  
Electrode Processes ◽  
Voltammetric Study

The reaction of warm EtOH solutions of FeX3.nH2O (X=Cl, NO3) with tridentate ONX (X=O, S, N) pyridoxal semi-, thiosemi- and S-methylisothiosemicabazones (H2L1, H2L2, H2L3, respectively) yielded high-spin octahedral mono- and bis(ligand) complexes of the formula [Fe(H2L1-3)Cl2(H2O)]Cl,[Fe(HL1,2)2]Cl.nH2O and [Fe(H2L3)(HL3)]NO3)2.H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, IR and UV-Vis spectra. Besides, a detailed voltammetric study of the complexes was carried out in DMF solution in the presence of several supporting electrolytes, to characterize the nature of the electrode processes and solution equilibria.

scholarly journals Synthesis, Electronic Spectral Study and Antifungal Evaluation of Mixed Ligand Complexes of Dibasic Tridentate Schiff Base and Naphthoic Acid with Transition Metal Ions

2019 ◽  
Vol 31 (5) ◽  
pp. 1041-1044
Author(s):  
Mukti Verma ◽  
Moni Verma ◽  
Nazia Tarannum
Keyword(s):  
Schiff Base ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Spectral Study ◽  
Mixed Ligand ◽  
Naphthoic Acid ◽  
Tridentate Schiff Base ◽  
Electronic Spectral Study

Transition metal complexes of Mn(II), Co(II) and Cu(II) with dibasic tridentate Schiff base derived from the condensation of thiosemi-carbazide with acetoacetanilide as primary ligand and 1-hydroxy-2-naphthoic acid as co-ligand have been synthesized. The mixed ligand complexes of the above mentioned metal ions were characterized by analytical, magnetic and electronic spectral study. The transition metal complexes were also evaluated for antifungal activity against Drechslera tetramera, Fusarium oxysporum and Aternaria alternata at different concentrations.

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