Structural, spectral and biological studies of binuclear tetradentate metal complexes of N3O Schiff base ligand synthesized from 4,6-diacetylresorcinol and diethylenetriamine

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Adel A A Emara

Abstract

The binuclear Schiff base, H2L, ligand was synthesized by reaction of 4,6-diacetylresorcinol with diethylenetriamine in the molar ratio 1:2. The coordination behavior of the H2L towards Cu(II), Ni(II), Co(II), Zn(II), Fe(III), Cr(III), VO(IV) and UO2(VI) ions has been investigated. The elemental analyses, magnetic moments, thermal studies and IR, electronic, 1H NMR, ESR and mass spectra were used to characterize the isolated ligand and its metal complexes. The ligand acts as dibasic with two N3O-tetradentate sites and can coordinate with two metal ions to form binuclear complexes. The bonding sites are the nitrogen atoms of the azomethine and amine groups and the oxygen atoms of the phenolic groups. The metal complexes exhibit either square planar, tetrahedral, square pyramid or octahedral structures. The Schiff base ligand and its metal complexes were tested against four pathogenic bacteria (Staphylococcus aureus and Streptococcus pyogenes) as Gram-positive bacteria, and (Pseudomonas fluorescens and Pseudomonas phaseolicola) as Gram-negative bacteria and two pathogenic fungi (Fusarium oxysporum and Aspergillus fumigatus) to assess their antimicrobial properties. Most of the complexes exhibit mild antibacterial and antifungal a...Continue Reading

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Dec 8, 2005·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Adel A A Emara, Azza A A Abou-Hussen

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Citations

Feb 12, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·C ShijuS Kumaresan
May 15, 2012·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Azza A A Abou-Hussein, Wolfgang Linert
Oct 20, 2015·International Journal of Biological Macromolecules·Salah M Tawfik, Hassan H Hefni
May 20, 2015·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·A A M BelalMoamen S Refat
Jun 8, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Magdy SheblM A N Mahdi
Sep 28, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Azza A Abou-Hussein, Wolfgang Linert
Mar 13, 2014·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Magdy SheblMona A A Kishk
Jan 13, 2011·Chemistry Central Journal·Hussein S SeleemMarwa A Mousa
Aug 15, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ricardo A MurciaJohn J Hurtado

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