Preparation, physical and chemical studies on metal complexes of Schiff bases as a nucleus key to prepare nanometer oxides have catalytic applications: Nickel (II) complexes derived from 4-aminoantipyrine derivatives
作者:Samy M. El-Megharbel、Adel S. Megahed、Moamen S. Refat
DOI:10.1016/j.molliq.2016.01.097
日期:2016.4
and 2-thiophene carboxaldehyde, respectively. The molar conductance data reveal that all the Ni(II) chelates are non-electrolytes. The general formula of precursors nickel(II) complexes is [Ni(Ln)2(Cl)2] with 1:2 (Ni:L) molar ratio. These complexes were used as the primary nucleus to prepare nickel (II) oxide, NiO, nano-particles by thermal degradation in static air. The resulted NiO nano-particles
Metal chelates of Schiff base derived from thiophene-2-aldehyde with 4-aminoantipyrine have been synthesized. The ligand and the complexes have been characterized by IR, molar conductance, magnetic moments, EPR, cyclic voltammetry, XRD and SEM measurements. Computational studies were also carried out. The geometry of the complexes was investigated by electronic spectral data and magnetic moment measurements. The metal complexes exhibit higher antibacterial activity than the free ligand.
Synthesis and characterization of oxovanadium(IV) and dichlorovanadium(IV) complexes of biologically active 4-aminoantipyrine derivatives
作者:Ali El-Dissouky、Aziza K. Shehata、Ghada El-Mahdey
DOI:10.1016/s0277-5387(96)00173-8
日期:1997.1
pyramidal structure for all complexes. The selective deoxygenation of the oxovanadyl complexes [(PyAAP-H)2(VO)2SO4] and [(SAAP-H)2VO], which gave a good yield of the corresponding dichloro compounds [L2VCl2], L = PyAAP-H or SAAP-H, is made by using different deoxygenating agents in different solvents and at various temperatures. The purity and the percentage yield of the products are found to be solvent
El-Shafiey, Egyptian Journal of Chemistry, 2008, vol. 51, # 1, p. 39 - 56
作者:El-Shafiey
DOI:——
日期:——
Complexes of Yttrium and Lanthanide Perchlorates with 4-N-(2′-Thienylidene)aminoantipyrine
作者:C. R. Vinodkumar、P. K. Radhakrishnan
DOI:10.1080/00945719708000164
日期:1997.10
Perchlorate complexes of ten lanthanides with the Schiff base 4-N-(2'-thienylidene)aminoantipyrine (TAA) were synthesized and characterized by elemental analyses, molar conductance, infrared spectroscopy and H-1 NMR as well as electronic spectra and thermogravimetric analysis. The complexes may be formulated as [Ln(TAA)(3)(ClO4)](ClO4)(2), where Ln = Y, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho or Er. The ligand TAA acts as a neutral tridentate ligand in these complexes. One of the perchlorates is a monodentate ligand coordinated to the metal center while the other two perchlorates are counter ions. The complexes are thermally stable up to 180 degrees C and decompose in two stages. A coordination number of ten is assigned to the metal ion in these complexes.