Author
Aziza Z. Shehada
Bio: Aziza Z. Shehada is an academic researcher from Alexandria University. The author has contributed to research in topics: Spectrochemical series & Denticity. The author has an hindex of 1, co-authored 1 publications receiving 73 citations.
Topics: Spectrochemical series, Denticity, Schiff base
Papers
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TL;DR: In this article, a series of copper-II complexes derived from 4-thienyl-methylidene amino antipyrine (TAAP) and 4-furfurylidene (FAAP) have been synthesized.
76 citations
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TL;DR: The activity data show that the metal complexes to be more potent/antibacterial than the parent Schiff base ligand against one or more bacterial species.
190 citations
TL;DR: In this article, structural properties and biological studies of transition metal complexes derived from 4-aminoantipyrine are discussed. But the most important results of extensive studies (syntheses, spectral, magnetic, redox, structural characteristics, antimicrobial and DNA cleavage) of the metal complexes with heterocyclic Schiff bases of 4-AMINOANTipyrines with some aldehydes and oximes are reviewed.
Abstract: The survey highlights structural properties and biological studies of transition metal complexes derived from 4-aminoantipyrine. The most important results of extensive studies (syntheses, spectral, magnetic, redox, structural characteristics, antimicrobial and DNA cleavage) of the metal complexes with heterocyclic Schiff bases of 4-aminoantipyrine with some aldehydes and oximes are reviewed.
180 citations
TL;DR: Metal complexes of novel Schiff base (HL) ligand, prepared via condensation of 4-aminoantipyrine and 2-aminophenol, are prepared and are screened for its antibacterial activity against bacterial species.
159 citations
TL;DR: In this paper, neutral tetradentate chelate complexes of CuII, NiII, CoII, MnII, ZnII and VOII have been prepared in EtOH using Schiff bases derived from acetoacetanilido-4-aminoantipyrine and 2-aminophenol/2-aminothiophenol.
Abstract: Neutral tetradentate chelate complexes of CuII, NiII, CoII, MnII, ZnII and VOII have been prepared in EtOH using Schiff bases derived from acetoacetanilido-4-aminoantipyrine and 2-aminophenol/2-aminothiophenol. Microanalytical data, magnetic susceptibility, i.r., u.v.–vis., 1H-n.m.r. and e.s.r. spectral techniques were used to confirm the structures of the chelates. Electronic absorption and i.r. spectra of the complexes suggest a square-planar geometry around the central metal ion, except for VOII and MnII complexes which have square-pyramidal and octahedral geometry respectively. The cyclic voltammetric data for the CuII complexes in MeCN show two waves for copper(II) → copper(III) and copper(II) → copper(I) couples, whereas the VOII complexes in MeCN show two waves for vanadium(IV) → vanadium(V) and vanadium(IV) → vanadium(III) couples. The e.s.r. spectra of the CuII, VOII and MnII complexes were recorded in DMSO solution and their salient features reported. The in vitro antimicrobial activity of the investigated compounds was tested against the microorganisms such as Salmonella typhi, Staphylococcus aureus, Klebsiella pneumoniae, Bacillus subtilis, Shigella flexneri, Pseudomonas aeruginosa, Aspergillus niger and Rhizoctonia bataicola. Most of the metal chelates have higher antimicrobial activity than the free ligands.
158 citations
TL;DR: In this article, the crystal structure of 1-phenyl-2,3-dimethyl-4-(N-2-hydroxy-4-methoxy-benzaldehyde)-3-pyrazolin-5-one has been determined by X-ray diffraction studies.
81 citations