عنوان المقالة:تحضير، تشخيص طيفي والفعالية البايولوجية لبعض معقدات العناصر الانتقالية المشتقة من { 2,2`((5-methyl-1,3-phenylene)-bis- (oxy))-bis-N`(E`)-2- hydroxybenzylideneacetohydrazide}ligand Preparation, spectral characterization and biological activity of somenewbimetalic complexes derived from{ 2,2`((5-methyl-1,3-phenylene)-bis- (oxy))-bis-N`(E`)-2- hydroxybenzylideneacetohydrazide}ligand
In this work, the preparation of new multidentate Schiff-base lig and and its metal complexes are described. The
formation of the lig and{ 2,2`((5-methyl-1,3-phenylene)-bis-(oxy))-bis-N`(E`)-2-
hydroxybenzylideneacetohydrazide}[H2L] was prepared from the reaction {2,2-((5-methyl-1,3-phenylene)-bis-(oxy))-
di-(acetohydrazide)}[M]precursor and salicylaldehyde in a 1:2 mole ratio, respectively. The reaction of the lig and
[H2L] with (Cr+3 , Mn+2 and Fe+2 )metal ions in a 1:2 (L:M) mole ratio. Ligand and complexes were characterised via
spectroscopic analyses; [FT-IR, UV-Vis spectroscopy,(C.H.N) microanalysis, chloride content, thermal analysis(TG),
electrospray mass, magnetic susceptibility and conductivity measurements. The characterisation data showed the six
coordinate complexes with the general formula;[M2(L)Cl4] (where M= Cr+3 ) and K2[M2(L)Cl4] (where M= Mn+2 and
Fe+2) .The ligand [H2L] and its complexes were screened for their antimicrobial activity against four bacterial species
(Bacillus subtitles and Staphylococcus aureus) G-positive ,(Escherichia coli and Pseudomonas aeruginosa) G-negative
and two fungi species(Candida and trichomoniasis). Biological data indicated that complexes become potentially
more active against several type of organism, under survey compared with the free lig and.
رياض محمود احمد | Riyadh Mahmood Ahmed | 12021