Synthesis, spectroscopic characterization and thermal behavior of metal complexes formed with (Z)-2-oxo-2-(2-(2-oxoindolin-3-ylidene)hydrazinyl)-N-phenylacetamide (H2OI)

Structural and theoretical study of six dinuclear Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) complexes containing ON-NO donor azodye ligand, 4,4’-(1E,1’E)-(5,5’-(propane- 2,2-diyl)bis(2-hydroxy-5,1-phenylene)bis(diazene-2,1-diyl)dibenzenesulfonic a

“…Geometrical parameters of the ligand and its Cu(II) complex and Zn(II) complex (Figure 4) are collected from the stable geometry (Table 3 and 4). It is observed that the bond lengths such as C5-O12, C5-C2, C2-N8, N8-C13, N13-C16 of the ligand have undergone a change in Cu(II) and Zn(II) complexes that indicates the coordination of the ligand donor atoms with the metal ions [39,40]. This fact has been supported by vibrational frequencies in I.R.…”

“…spectra of the complexes. The bond angles such as O11-Cu34-N12, N12-Cu34-Cl36, O38-Cu34-O41, N12-Cu34-O38 for the Cu(II) ion and the bond angles such as O11-Zn34-N12, N12-Zn34-Cl36, Cl36-Zn34-O38, O11-Zn34-O38 for the Zn(II) ions suggests a distorted-octahedral and distorted-tetrahedral geometry around the Cu(II) and Zn(II) ions respectively [39,40]. The single point energy and dipole moment of the ligand and its Cu(II) and Zn(II) complexes were calculated using DFT/B3LYP 6-31G (d, p) and DFT/B3LYP LANL2DZ basic sets.…”

Comparative ligational, optical band gap and biological studies on Cr(III) and Fe(III) complexes of hydrazones derived from 2-hydrazinyl-2-oxo-N-phenylacetamide with both vanillin and O-vanillin

“…Moreover, some hydrazone analogues have been investigated as potential oral iron chelating drugs for the treatment of genetic disorders such as thalassemia [9,10] and have also been suggested as possible metal chelating agents for treating neurodegenerative disorders such as Alzheimer disease [11,12]. In continuation of our previous work [13][14][15][16][17][18][19], the present work aims to synthesize and characterize Cr(III) and Fe(III) complexes of 2-(2-(4-hydroxy-3-methoxybenzylidene) hydrazinyl)-2-oxo-N-phenylacetamide (H 2 L 1 ) and 2-(2-(2-hydroxy-3-methoxybenzylidene)hydrazinyl)-2-oxo-Nphenylacetamide (H 2 L 2 ). In addition, the kinetics and thermodynamic characteristics of the decomposition steps have been studied employing Coats-Redfern and Horowitz-Metzger models.…”

“…2-hydrazino-2-oxo-N-phenyl-acetamide was synthesized as previously described [15]. Ligands were synthesized by heating under reflux for 1 h an ethanolic solution of 2-hydrazino-2-oxo-N-phenylacetamide with vanillin (H 2 L 1 ) and o-vanillin (H 2 L 2 ) in a 1:1 molar ratio (Scheme 1).…”

“…Both ligands and their complexes exhibit the electronic transition in DMSO. The spectra of ligands shows three bands in the regions (25252-2604), (27433-28735) and (32467-34013) cm -1 assignable to (n π*) transition of azomethine and carbonyl groups as well as (π π*) transition of the benzene rings, respectively [15,16]. [16].…”