Synthesis and study of physico-chemical properties of a new chiral Schiff base ligand and its metal complex

A new chiral amino acid Schiff base ligand (Salarg) and its metal complex (Mn-Salarg) have been synthesized using l-Arginine, a naturally occurring chiral diamine with two kinds of asymmetric α-, ε-NH₂ groups. This new Salarg-ligand and Mn-Salarg complex are characterized with the help of ultraviolet, fluorescence and infrared spectroscopy. Their crystal systems are determined by X-ray powder diffraction method. The elemental analysis has been carried out by energy dispersive X-ray analysis (EDAX). The presence and percentage of metal in the complex have been detected and estimated by energy dispersive X-ray fluorescence (EDXRF) spectroscopy. Circular dichroism spectroscopy has revealed the chiral nature of the Salarg-ligand and its metal complex. Furthermore, a comparative study of this new chiral Salarg-ligand and its complex has been made with the well known achiral Salen ligand and its metal complex (Mn-Salen).