Preparation and Characterization of Neodymium(III) arginine complex.

Abstract

A new complex of neodymium(III) arginine was prepared from Nd(NO 3) 3 .6H 2 O and arginine. The preparation involves mixing the metal-ligand by the ratio 1:2 dissolving both in H 2 1:1. The 1 H-NMR spectrum of the complex observed a broadness attributed to the coordination of the paramagnetic metal with the ligand. In addition to, the comparison of vibrational spectra of free and coordinated arginine in the region of carbonyl, imine, and amino groups all indicated the occurrence of the complex. The Uv-vis spectra were also inspected where a new band appeared in the range of 240-270 nm assigned to the ligand metal charge transfer.

Synthesis and Biological Activity of Dysprosium Lanthanide Complex with Azo Ligand

“…The molar conductivity is 155 S.cm2.mol-1 suggesting 1:1 electrolyte nature of Dysprosium complex. The percentage of Dy(III) metal ion was determined by volumetric analysis using EDTA [16,17] .…”