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Schiff bases are considered as a very important class of organic compounds because of their ability to form stable complexes with many different transition metal ions in various oxidation states [1-10]. These complexes have wide applications in some biological aspects [11-20], catalytic activity [21-22] and fluorescence properties [23]. Several Schiff bases have recently been investigated as corrosion inhibitors for various metals and alloys in acid media [24, 25]. The inhibition of corrosion by Schiff bases can be attributed to its molecules with π-electrons of –C=Ngroups and π-electrons of aromatic ring. Conjugating large p bond through which its molecules are likely to be adsorbed strongly on the metal surface. Coordination numbers of lanthanide complexes are in range from six to twelve, eight and nine being the most common coordination numbers. Lanthanides are weak Lewis acids and preferably coordinate to hard Lewis bases like oxygen. In this paper, we report synthesis of eight Schiff base complexes of Cu(II), Ni(II), Co(II), Zn(II), Hg(II), Fe(III), La(III) and Sm(III)metal ions. The complexes were characterized by elemental analysis, solid reflectance, FT-IR and fluorescence spectroscopy, thermal analysis and molar conductance. Also, the inhibition effects of the studied compounds on the corrosion of stainless steel 410 (SS410) in H2SO4 1M solutions were investigated.

international journal of advanced research in chemical sciences

Spectroscopic, Thermal, Fluorescence Studies and Antibacterial Activity of Some Transition Metals with Schiff Base 2-[(2- Furylmethylene) Amino] Benzoic Acid