Preparation and characterization of a new Tc-d-glucosazine complex

The d-glucosazine ligand was synthesized in absolute methanol and its u.v. and i.r. spectra recorded after extensive purification from unreacted reagents. A new Tc-d-glucosazine complex was prepared following different routes that consisted of either a one-step or a two-step synthesis or a ligand exchange reaction. Complex composition and stability in aqueous media were examined through u.v. spectra. Experiments on ligand exchange reactions suggested that Tc(V) is the most likely oxidation state of the metal in the complex.