عنوان المقالة:تحضير وتشخيص وفعالية بايولوجية لمعقدات الكوبلت والكادميوم المشتقة من قواعد شف الحلقية Co(II) and Cd(II) Complexes Derived from Heterocyclic Schiff-Bases: Synthesis, Structural Characterisation, and Biological Activity
رياض محمود احمد | Riyadh Mahmood Ahmed | 11856
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- رياض محمود احمد/ انعام اسماعيل يوسف/ محمد جابر الجبوري
- المؤلفون بالإنجليزي
- Riyadh M. Ahmed, Enaam I. Yousif, and Mohamad J. Al-Jeboori
- الملخص العربي
- New monomeric cobalt and cadmium complexes with Schiff-bases, namely, N-[(E)-(3-hydroxy-4-methoxyphenyl)methylidene] furan-2-carbohydrazide (L1) and N-[(E)-(3-hydroxy-4-methoxyphenyl)methylidene]thiophene-2-carbohydrazide (L2) are reported. Schiff-base ligands L1 and L2 were derived from condensation of 3-hydroxy-4-methoxybenzaldehyde (iso-vanillin) with furan-2-carboxylic acid hydrazide and thiophene-2-carboxylic acid hydrazide, respectively. Complexes of the general formula [M(L)2]Cl2 (where M = Co(II) or Cd(II), L = L1 or L2) have been obtained from the reaction of the corresponding metal chloride with the ligands.The ligands and their metal complexes were characterised by spectroscopic methods (FTIR, UV-Vis, 1H, and 13C NMR spectra), elemental analysis, metal content, magnetic measurement, and conductance. These studies revealed the formation of four-coordinate complexes in which the geometry about metal ion is tetrahedral. Biological activity of the ligands and their metal complexes against gram positive bacterial strain Bacillus (G+) and gram negative bacteria Pseudomonas (G−) revealed that the metal complexes become less resistive to the microbial activities as compared to the free ligands.
- تاريخ النشر
- 02/07/2013
- الناشر
- Hindawi Publishing Corporation
- رقم المجلد
- 2013
- رقم العدد
- الصفحات
- 1-6
- رابط الملف
- تحميل (257 مرات التحميل)
- الكلمات المفتاحية
- Complexes Derived from Heterocyclic Schiff-Bases, Biological activity