Synthesis and characterization of VO2+ and Mn2+ complexes containing a Schiff base ligand derived from Tryptamine and 2-hydroxy-1- naphtaldehyde

Schiff bases are compounds that are usually formed by condensation reaction of the aldehydes or ketones and primary amines. The common structural feature of thesecompounds for discriminating of the Schiff bases is RR′C=NR″, where the R″ group represents alkyl and aryl groups that cause constancy of the Schiff base as an amine[1]. The non-bonding electron pair on the nitrogen atom in these compounds make them facility to coordinate to the metal ions and, formed one of the most important classes of complexes named Schiff base complexes [2]. In this research, we describe the synthesis and characterization of a new Schiff base ligand derived from the reaction of Triptamine and 2-hydroxy-1-naphtaldehyde and its VO(II), Mn(II) complexes. Ligand and complexes were characterized by different spectral and analytical methods (CHN analysis and, NMR, IR, UV-VIS and Fluoresce spectroscopy).