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Article
Synthesis, Characterization and Studying the Enzyme Activity of New Benzothiazole Schiff Base Ligand (HL) and Its Complexes with Some of Metal Ions

Author: Basim H. Al-Zaidi
Journal: Ibn Al-Haitham Journal For Pure And Applied Science مجلة ابن الهيثم للعلوم الصرفة والتطبيقية ISSN: 16094042/ 25213407 Year: 2017 Volume: 30 Issue: 2 Pages: 125-140
Publisher: Baghdad University جامعة بغداد

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Abstract

A new heterocyclic Schiff bases ligand (HL) derived from condensation of 2-Amino-4-methylbenzothiazole with 4-Diethylaminosalicylaldehyde have been synthesized and characterized by (FTIR & UV.Vis) spectroscopies, (1H & 13C)NMR spectra, mass spectrum, elemental microanalysis (C,H,N,S). Metal complexes with Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) ions have been also synthesized and characterized by (FTIR & UV.Vis) spectroscopies, flame atomic absorption, molar conductivity measurements and magnetic susceptibility. These studies indicate that the mole ratio (L:M) is (2:1) for Co(II) complex and (1:1) for other complexes. The spectral results indicate that the ligand coordinates with metal ions as monobasic bidentate, via azomethine nitrogen and phenolic oxygen atoms. The study suggested octahedral geometry for Co(II), Ni(II) and Zn(II) complexes and square planar and tetrahedral geometries for Cu(II) and Cd(II) complexes, respectively. The enzyme activity of the ligand and its metal complexes with acetylcholine esterase1 (AChE) have also been studied. The study of enzyme activity indicates that the ligand and its metal complexes revealed different inhibition behaviors.


Article
Preparation and Characterization of Some Chelate Complexe with New bi-dentate (N,O)bis-Schiff base Ligand

Authors: Basim H. Al-Zaidi --- Anaam M. Rasheed --- Sinan M. Al-Bayati --- Amal M. Hussein
Journal: Journals kufa for chamical مجلة الكوفة للكيمياء ISSN: 20772351 Year: 2016 Volume: 2 Issue: 1 Pages: 49-61
Publisher: University of Kufa جامعة الكوفة

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Abstract

In this research newchelation complexes were prepared for Cr(III), Mn(II), Co(II), Ni(II) and Cu(II) ions with new bis schiff base ligand [2-(-((4-(-1-(2-phenylhydrazono)ethyl)phenyl)imino)methyl)phenol](M-Sal). The new ligand chracterized depends on (Uv-Vis, IR) spectroscopies, 1H-NMR andMass spectra. The results of flame atomic absorption indicate that (Metal:Ligand) portions were (1:1) for Cr(III), Ni(II) and Cu(II) complexes and were (1:2) for Mn(II) and Co(II) complexes. The geometries of prepared complexes suggested according to the results of Uv-Vis and IR spectroscopies, magnetic susceptibility, molar conductance and flame atomic absorptionwhich were squar plannar for Ni(II)and Cu(II) complexes while the rest complexes have the octahedral geometry.

حضر في هذا البحث معقدات كلابية لكل من الكروم (III)و المنغنيز(II) والكوبلت(II) و النيكل(II) والنحاس(II)مع ليكاند جديد ثنائي المخلب قاعدة الشف4))-)-2]--2)-1 -)فنيل هايدرازونو( اثيل (فنيل( ايمينو( مثيل( فينول (M-Sal).شخص الليكاند الجديد اعتمادا على نتائج اطياف الاشعة فوق البنفسجية - المرئية والاشعة تحت الحمراء وطيف الرنين النووي المغناطيسي للبروتون وطيف الكتلة. بينت نتائج الامتصاص الذري اللهبي ان نسبة (الفلز:ليكاند), كانت (1:1)لمعقدات الكروم (III) والنحاس(II) بينما كانت النسبة (2:1) لمعقداتالمنغنيز(II) والكوبلت(II) و النيكل(II). وقد تم اقتراح الاشكال الفراغية للمعقدات المحضرة على وفق معطيات نتائج اطياف الاشعة فوق البنفسجية-المرئية والاشعة تحت الحمراء والحساسية المغناطيسية و التوصيل المولاري والامتصاص الذري اللهبي حيث امتلك معقدي النحاس والنيكل الثنائيين بنية المربع المستوي فيما كانت باقي المعقدات ثمانية السطوح.


Article
Synthesis, Characterization and Studying the Enzyme Activity of New Benzothiazole Schiff Base Ligand (HL) and Its Complexes with Some of Metal Ions

Authors: Basim H. Al-Zaidi --- Asia H. Abed --- Fadhel R. Hafedh --- Ali N. Niseaf
Journal: Ibn Al-Haitham Journal For Pure And Applied Science مجلة ابن الهيثم للعلوم الصرفة والتطبيقية ISSN: 16094042/ 25213407 Year: 2017 Volume: 30 Issue: 2 Pages: 125-140
Publisher: Baghdad University جامعة بغداد

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Abstract

A new heterocyclic Schiff bases ligand (HL) derived from condensation of 2-Amino-4-methylbenzothiazole with 4-Diethylaminosalicylaldehyde have been synthesized and characterized by (FTIR & UV.Vis) spectroscopies, (1H & 13C)NMR spectra, mass spectrum, elemental microanalysis (C,H,N,S). Metal complexes with Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) ions have been also synthesized and characterized by (FTIR & UV.Vis) spectroscopies, flame atomic absorption, molar conductivity measurements and magnetic susceptibility. These studies indicate that the mole ratio (L:M) is (2:1) for Co(II) complex and (1:1) for other complexes. The spectral results indicate that the ligand coordinates with metal ions as monobasic bidentate, via azomethine nitrogen and phenolic oxygen atoms. The study suggested octahedral geometry for Co(II), Ni(II) and Zn(II) complexes and square planar and tetrahedral geometries for Cu(II) and Cd(II) complexes, respectively. The enzyme activity of the ligand and its metal complexes with acetylcholine esterase1 (AChE) have also been studied. The study of enzyme activity indicates that the ligand and its metal complexes revealed different inhibition behaviors.

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