The synthesis and structural characterization of the technetium nitrosyl complexes [TcCl(NO)(SC 5H 4N)(PPh 3) 2] and [Tc(NO)(SC 5H 4N) 2(PPh 3)

Abstract

The reaction of the Tc(I) complex [Tc(NO)Cl 2(HOMe)(PPh 3) 2] with stoichiometric amounts of 2-mercatopyridine and a proton scavenger yields [Tc(NO)Cl(Spy)(PPh 3) 2] or [Tc(NO)(Spy) 2(PPh 3)], depending upon quantities of ligands employed. These two complexes have been structurally characterized. The small bite angles of the bidentate mercaptopyridine ligands cause significant deviation from octahedral coordination geometry.