Popis: |
New metal complexes of Cu(II), Co(II), Ni(II), Zn(II), Cd(II), Cr(III) and Fe(III) chlorides and/or acetates with glycine and 2-acetylpyridine have been synthesized and characterized by, elemental analyses, spectral analyses (IR, UV–Vis., 1 H NMR), thermal analyses (TGA and DTG), conductance and magnetic measurements. The results showed that, in presence of metal acetates both glycine and 2-acetylpyridine are condensated to form the Schiff-base ligand. While, in presence of metal chlorides both glycine and 2-acetylpyridine react separately to form binary compounds. The Schiff-base ligand acts as mono-negative tridentate coordinating via pyridyl nitrogen, azomethine nitrogen and carboxylate oxygen after displacement of hydrogen. In case of Ni(II), Cr(III) and Fe(III) chloride complexes glycine acts as mono-negative bidentate and 2-acetylpyridine acts as neutral tridentate. |