Benner
سحر عقيل الاعسم ( أستاذ مساعد )
كلية الصيدلة - صيدلة عام
[email protected]
 
 
 
prepared three complexes by reacting the ligand of azoimidazole 2[(4-Benzyloxy phenyl)azo]-4,5- diphenyl imidazole (P-BOPAI) with the following metal ions Cr(III) ,Mn(II), and Ag(I) .
تحميل
بحث النوع:
علوم التخصص العام:
Sahar A. Hussen اسم الناشر:
Rahim. Taher Mehdi Ebtihal kadhum kareem اسماء المساعدين:
Journals kufa for chamical الجهة الناشرة:
المجلد 9 الإصدار 3  
2011 سنة النشر:

الخلاصة

In this work we have prepared three complexes by reacting the ligand of azo imidazole 2[(4-Benzyloxy phenyl)azo]-4,5- diphenyl imidazole (P-BOPAI) with the following metal ions Cr(III) ,Mn(II), and Ag(I) . The preparation has been conducted after fixing the optimum conditions of concentration and (PH). U.V- visible spectra of the complex solutions of the above metal ions with the ligand (P-BOP AI) have been studied for a range of (PH) and concentration which obey lampert-Beers rule. The structures of complexes are deduced according to mole ratio method which were obtained from the spectroscopic studies of the complex solutions .The ratios of metal: ligand obtained are (1 :2) to the complexes of Cr(III), Mn(II), ions and (1: 1) to the complexe of Ag(II) ion . The stability of complexes in solution were also studied at the optimum conditions. All our complexes mentioned above have been identified as follows: (UV -Vis) absorption spectra of ethanolic solution of complexes showed bath chromic shift, as compared with that of free ligand. The infrared spectra of the chelating complexes have been studied ,they were also compared with the ligand spectrum, they showed obvious changes in the band positions .Some of them has been disappear while others are shifted,this may indicate that acoordination between the metal ions and our ligand takes place. The conductivity measurements of our complexes have shown that non- ionic characters appear in ethanol solution to Mn(II),Ag(I)ions and ionic characters to Cr(III)ion .Elemental analysis for all complexes were determined , good agreement was obtained between the found and calculated values. Depending on these results , in addition to the measurements of magnetic susceptibility of our complexes it seems that some of these complexes are paramagnetic, while others are diamagnetic . We can conclude that the proposed geometrical structures of the complexes of Cr(III), Mn(II), ions are octahedral , while the complexe of Ag(I) ion is tetrahedral geometry .