The [Tc(phen)3] (PF6)3 complex has been synthesized by ligand substitution on [Tc(tu)6]3+. The reaction proceeds quickly in aqueous solution. A pure compound is obtained with 40% yield. It was characterized by Tc elemental analysis, cerimetric titration, conductometry and electrophoresis. The corresponding spectroscopic properties (UV, Vis, IR and NMR) are also reported and discussed.