ESR characterization of two oxovanadium (IV) Schiff base complexes derived from tris(2-aminoethyl)amine

摘要

The compounds, C _(21)H _(27)N _4O _3(L ~1) and C _(21)H _(27)N _7(L ~2), is a tripodal Schiff base that was obtained from the reaction of tris(2-aminoethyl)amine (tren) and furan-2-carbaldehyde and pyrole- 2- carbaldehyde. The tripodal Schiff bases and their oxovanadium complexes have been characterized on the basis of the results of the elemental analysis, magnetic susceptibility measurements and spectroscopic studies FT-IR, ~1H-NMR, UV-Vis, ESR, magnetic moment and thermal analysis (TGA). Job's method of continuous variation shows 3:2 metal to ligand ratio.