Synthesis and thermal studies of mixed ligand complexes of Cu(II), Co(II), Ni(II) and Cd(II) with mercaptotriazoles and dehydroacetic acid

Fouad, Dina M.; Bayoumi, Ahmed; El-Gahami, M. A.; Ibrahim, S. A.; Hammam, A. M.

doi:10.4236/ns.2010.28103

Cited by 8 publications

(5 citation statements)

References 41 publications

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“…3-acetyl-4-hydroxy-6-methyl-(2H) pyran-2-one, commonly referred to as dehydroacetic acid, and its derivatives have been of research interest because of their interesting coordination chemistry, pharmaceutical importance and biological activities [7,8,9,10,11]. DNA binding and antibacterial screening of dehydroacetic acid complexes of Ru(II) and Ru(III) containing PPh 3 /AsPh 3 have been recently reported by Chitrapriya et al [12].…”

Section: Introductionmentioning

confidence: 99%

A Novel Schiff Base of 3-acetyl-4-hydroxy-6-methyl-(2H)pyran-2-one and 2,2'-(ethylenedioxy)diethylamine as Potential Corrosion Inhibitor for Mild Steel in Acidic Medium

et al. 2015

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The corrosion inhibition activity of a newly synthesized Schiff base (SB) from 3-acetyl-4-hydroxy-6-methyl-(2H)-pyran-2-one and 2,2'-(ethylenedioxy)diethylamine was investigated on the corrosion of mild steel in 1 M HCl solution using potentiodynamic polarization and electrochemical impedance spectroscopic techniques. Ultraviolet-visible (UV-vis) and Raman spectroscopic techniques were used to study the chemical interactions between SB and mild steel surface. SB was found to be a relatively good inhibitor of mild steel corrosion in 1 M HCl. The inhibition efficiency increases with increase in concentration of SB. The inhibition activity of SB was ascribed to its adsorption onto mild steel surface, through physisorption and chemisorption, and described by the Langmuir adsorption model. Quantum chemical calculations indicated the presence of atomic sites with potential nucleophilic and electrophilic characteristics with which SB can establish electronic interactions with the charged mild steel surface.

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Section: Introductionmentioning

confidence: 99%

A Novel Schiff Base of 3-acetyl-4-hydroxy-6-methyl-(2H)pyran-2-one and 2,2'-(ethylenedioxy)diethylamine as Potential Corrosion Inhibitor for Mild Steel in Acidic Medium

et al. 2015

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“…In the spectra of metal complexes low frequency bands in the range 459-411 cm -1 were assigned to ν(M-N), the bands in the range 515-508 cm -1 were assigned to ν(M-O) [28][29][30][31] while the bands in the region 695-689 cm -1 were assigned to ν(M-S). In the spectra of HepScB and its metal complexes the bands in the region 853-801 cm -1 were assigned ν(C=S) 32 , the shift to either loer or higher frequencies in the metal complexes, ∆ν about 10-40 cm -1 , suggest that there is coordination to the metals via (C=S). The ligands exist in the keto-amine form (I) in the solid state, but they reacted in the enol-imine form (III) (Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Characterization and in vitro Antibacterial Activity of Co(II), Cu(II) and Ni(II) Complexes with 4-Acylpyrazol-5-one Schiff Bases

Asegbeloyin¹,

Agbo²,

Ukoha³

et al. 2014

Asian J. Chem.

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The condensation reactions of 4-acylpyrazol-5-ones with some organic molecules with hydrazide moiety gave ONO and ONS donor Schiff base ligands. The ligands behaved as mono-anionic species when reacted with Co(II), Cu(II) and Ni(II) chlorides to form six coordinate ML2 type metal complexes. IR spectra show that the ligands act in a tridentate manner and coordinated ONO and ONS donor groups of the ligands to Ni(II), Cu(II) and Co(II) ions. The ligands and complexes were characterized by elemental analysis and spectroscopic methods, while the metal complexes were further characterized by conductivity and magnetic measurements. All the synthesized compounds were screened for their in vitro antibacterial activity against some Gram positive and Gram negative clinical bacterial strains. The metal complexes showed better antibacterial activity when compared to the Schiff bases.

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“…The CR approach yields high agreement between the values of the kinetic and thermodynamic parameters. 40,41…”

Section: The Coordination Substances' Kinetic Parameter For Tgmentioning

confidence: 99%

Development of new thiazole‐guanidine complexes as rapid and recoverable catalysts for the synthesis of 6‐piperidin‐dihydro‐thia‐hexaaza‐s‐indacene derivatives supported by DFT studies

El‐Remaily,

Elhady,

Alzubi

et al. 2024

Applied Organom Chemis

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In this study, the focus was on synthesizing metal chelates of Fe(III), Ni(II), and Pd(II) using thiazole‐guanidine derivatives. Various spectral and analytical methods were employed to elucidate the structural characteristics and determine the molecular formulae of these metal chelates, including infrared (IR(, 1H‐NMR and 13C‐NMR, ultraviolet–visible (UV–vis), CHN, XRD data, mass spectrometry, thermal conduction, and measures of magnetism, were used to clarify the structures of these compounds. The optimized molecular structures have been scrutinized by the DFT method. Correlation between all spectroscopic methods and DFT calculation revealed an octahedral‐coordinating environment surrounding the Fe3+ ion, [Fe (BTG)2(NO3)2].NO3.2H2O and Ni2+, [Ni (BTG)2(NO3)2].H2O cation and distorted square planner surrounding Pd2+, [Pd (BTG) (COOCH3)2].2H2O cation. The examination of the stability and stoichiometry of complexes in solution using conventional techniques has been incorporated into the investigation's scope. Under mild reaction conditions, the green technique was employed to carry out a condensation reaction for aromatic aldehyde, rhodanine, pipredine, and 5‐aminotetrazol to generate derivatives of 6‐piperidin‐dihydro‐thia‐hexaaza‐s‐indacene derivatives. In comparison to our new complexes, all reaction conditions were optimized for those variable Lewis acid catalysts. In general, tests conducted under high yield, speedy, and environmentally friendly solvent (H2O/EtOH) conditions, the BTGPd catalyst showed superiority over others. Additionally, the hetero‐catalyst recovery proved successful and could be employed with the same efficiency up to six times before the efficiency started to decrease. The effectiveness of this catalytic procedure was validated through a thorough examination using density functional theory (DFT). The DFT analysis showcased the distinctive characteristics of this complex and proposed logical mechanisms that elucidated the crucial physical parameters responsible for the superior catalytic performance of the Pd(II) complex.

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Synthesis and thermal studies of mixed ligand complexes of Cu(II), Co(II), Ni(II) and Cd(II) with mercaptotriazoles and dehydroacetic acid

Cited by 8 publications

References 41 publications

A Novel Schiff Base of 3-acetyl-4-hydroxy-6-methyl-(2H)pyran-2-one and 2,2'-(ethylenedioxy)diethylamine as Potential Corrosion Inhibitor for Mild Steel in Acidic Medium

A Novel Schiff Base of 3-acetyl-4-hydroxy-6-methyl-(2H)pyran-2-one and 2,2'-(ethylenedioxy)diethylamine as Potential Corrosion Inhibitor for Mild Steel in Acidic Medium

Synthesis, Characterization and in vitro Antibacterial Activity of Co(II), Cu(II) and Ni(II) Complexes with 4-Acylpyrazol-5-one Schiff Bases

Development of new thiazole‐guanidine complexes as rapid and recoverable catalysts for the synthesis of 6‐piperidin‐dihydro‐thia‐hexaaza‐s‐indacene derivatives supported by DFT studies

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