عنوان المقالة:التحضير والتوصيف الطيفي والنشاط المضاد للبكتيريا لبعض متراكبات قاعدة شيف لايونات العناصر ثنائية التكافؤ وثلاثية التكافؤ Preparation, Spectral Characterization and Antibacterial Activity of some Divalent and Trivalent Metal Ion Schiff Base Complexes
عبدالسلام معتوق هميل, مرعي ميلود العجيلي, محمد عبدالكريم, محمد همت, حامد البغدادي
English Authors
Abdsalam M. Ali Hamil1 , Marie M. El-Ajaily2*, Mohamed Abdelkrim3 , Mohamed Himmett4 and Hammed Ali Bogdadi5
Abstract
and investigated by using several physical techniques, in particular; CHN elemental analysis, infrared, ultraviolet
and mass spectra. Only one product was formed from the reaction of the carbonyl and primary amine. The purity of
the isolated Schiff base was confirmed by its melting points and by TLC technique. The Schiff base under investigation forms complexes with Co(II), Ni(II), Cu(II), Cr(III) and La(III) ions. The synthesized complexes were confirmed by elemental analysis, molar conductivity, thermogravimetric analysis (TGA) analysis and spectral (IR, electronic and ESR) measurements. The analytical data show the formation of 1:1 (M:L) complexes. The molar conductance measurements of the complexes reveal a non-electrolytic nature. The thermogravimetric analysis data of
some complexes show the presence of coordinated and hydrated molecules water. The infrared spectral data display
the chelation behavior of the Schiff base towards the metal ions. The electronic spectral results of the Schiff base and
its complexes show π→π* (phenyl ring), n→π* (HC=N) and the expected geometrical structures for the synthesized
complexes. Basis on the electron paramagnetic resonance spectral data, an octahedral structure was suggested for
all complexes. The synthesized Schiff base and its complexes were tested against some pathogenic bacteria [Escherichia coli, Proteus Sp, Pseudomonas aeruginosa and Staphylococcus aureus].
أ.د. عبدالسلام معتوق هميل | Prof. Dr. Abdusalam Matoog Hamil | 5793