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PREPARATION AND CHARACTERIZATION OF SCHIFF BASE CHELATES DERIVED FROM SALICYLALDEHYDE AND

المصدر: جرش للبحوث والدراسات
الناشر: جامعة جرش
المؤلف الرئيسي: Ben Gweirif, S. (AUTH.)
مؤلفين آخرين: El-Tajory, A. N. (AUTH.) , El Ajaily, M. M. (AUTH.)
المجلد/العدد: مج11, ع1
محكمة: نعم
الدولة: الأردن
التاريخ الميلادي: 2006
الصفحات: 45 - 52
ISSN: 1814-2672
رقم MD: 664855
نوع المحتوى: بحوث ومقالات
قواعد المعلومات: HumanIndex, EcoLink, AraBase, EduSearch
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المستخلص: The new Schiff base chelates derived from Salicylaldehyde and Trypto¬phane with Mn (II), Co (II), Ni (II), Cu (II) ions have been prepared and characterized by using different techniques, such as elemental analysis, mo-lar conductance measurements, the rmogravimetric analysis, magnetic mo-ment measurements, infrared and electronic spectra. The elemental analysis data show the formation of 1:2 (M:L) ratio of the general formula of Na2 (ML2)nH20, where M and L are the metal ions and ligand under investiga-tion, and n+1, 1.5, 2, 5.5 and 16.5. The molar conductance's of the prepared schiff base chelated indicate a non-electrolytic nature. The the rmogravimet-ric analysis data of Na2(Mn(L)216.5H20 reveal the presence of water mole-cules. The magnetic moment measurements of the chelates exhibit a para-magnetic phenomenon except Cd (II) chelate is diamagnetic. The infrared spectral data of the Schiff base and its chelates display the proper functional groups which take place in the complexation. The electronic spectral data show the existence of (HC = N) transitions. The Schiff base and their chelates have been tested for their antibacterial activities against sever¬al human pathogenic bacteria (some of which were resistant to commercial¬ly used antibacterial). The results showed a great activity of Cd (II) chelate against Escherichia coli, Salmonelle typhi, pseudomonas aeruginosa, and Staphylococcus aureus. No effect of other compounds tested is observed against all bacteria used. Therefore, the use of Cd (II) chelate can be record-ed as an antibacterial agent after further investigation on it’s toxicity.

ISSN: 1814-2672