Preparation And Spectral Characterization Of Some Transition Metal Complexes With New Azo Imidazole Ligand And Study Some Industrial Application

J.AL-adely, Khalid

	Preparation And Spectral Characterization Of Some Transition Metal Complexes With New Azo Imidazole Ligand And Study Some Industrial Application
journal of al-qadisiyah for pure science(quarterly)
Article 1, Volume 11, Issue 4, 2011, Pages 94-114 PDF (0 K)
Author
Khalid J.AL-adely
Abstract
New organic heterocyclic azo dye as ligand 2-[1-(4-Bromo phenyl)azo]-imidazol (4-BrPAIm) has been prepared by coupling reaction of the diazonium salt of 4-Bromo aniline with imidazole in alkaline ethanolic solution.The azo dye ligand has been characterized and depending upon spectral data of IR,UV-visble and 1HNMR. Metal complexes of this ligand with Ni(II),Pd(II),Pt(IV) ,Cu(II),Ag(I) andAu(III) salts were prepared with a metal:ligand ratio(M:L) of (1:1) for Pd(II) and Au(III) while it is 1:2 ratio for rest metal ions.The isolated solide complexes are found to have the general formula [NiL2Cl2].H2O,[PdLCl2], [PtL2Cl2]Cl2.H2O, [CuL2Cl2].H2O ,[AgL2]NO3 and [AuLCl2]Cl.H2O .The chelate compexes were characterized and their stereo chemical structures and geometrice were suggested depending upon data of elemental analysis ,molar conductivity ,atomic absorption ,magnetic susceptibility measurements ,IR and electronic spectra.The data show that the ligand a bidantate and coordinates to the metal ion Via the nitrogen atom of azo group and with imidasole N3 atom .Octahydral configuration is suggested for Ni(II) , Pt(IV) and Cu(II) metal complexes but square planer for Pd(II) and Au(III) complexe and tetrahedral for Ag(I) complex.Condctivity measurements of prepared complexes showed electrolyte for Pt(IV), Au(III) and Ag(I) complexes and non electrolyte for rest complexes. In dimetheyl sulphoxide (DMSO) solution have been evaluated by agar plate diffution technique againt foure human pathogenic bacterial staphylococus aureus(Gram Positive Bacteria),pseudomonas aeruginosa,Escherichia coli and Ribrio cholerae(Gram nagtive Bacteria).The ligand and some of the complexes were found exhibit good bacterial activities .In addition the dyeing performance of the prepared ligand and it,s complexes was assessed .The dye were tested for light and dctergent fastness.The fixied color have the feature of stability to wards light ,wash and friction.

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