عنوان المقالة: Synthesis, Structural Study, and Biological Activity Evaluation of VO(II), Mn(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) Complexes with New Schiff Base Ligand Derived from Pyrazine
Bushra M. Fayyadh , Wurood A. Jaafar, Basima M. Sarhan
Abstract
New Schiff base [3-(3-acetylthioureido)pyrazine-2-carboxylic acid][L] has been prepared through 2 stages, the chloro acetyl
chloride has been reacting with the ammonium thiocyanate in the initial phase for producing precursor [A], after that [A] has
been reacting with the 3-amino pyrazine-2-carboxilic acid to provide a novel bidentate ligand [L], such ligand [L] has been
reacting with certain metal ions in the Mn(II), VO(II), Ni(II), Co(II), Zn(II), Cu(II), Hg(II), and Cd(II) for providing series of
new metal complexes regarding general molecular formula [M(L)2XY], in which; VO(II); X=SO4,Y=0, Co(II), Mn(II), Cu(II),
Ni(II), Cd(II), Zn(II), and Hg(II); Y=Cl, X=Cl. Also, all the compounds were characterized through spectroscopic techniques
[ IR, UV-Vis, atomic absorption], conductivity measurements, chloride content, elemental micro analysis in addition to the
1
H,13C-NMR for ligand [L] only. Based on the results taken from the methods mentioned above, the proposed geometrical
structures with regard to each prepared complex have been in the agreement with octahedral formula.
أ.م.د.ورود علي جعفر | dr.wurood ali jaafar | 11468