TRICARBONYLTECHNETIUM(I) COMPLEXES WITH NEUTRAL BIDENTATE LIGANDS - N-METHYL-2- PYRIDINECARBOAMIDE AND N-METHYL-2- PYRIDINECARBOTHIOAMIDE: EXPERIMENTAL AND THEORETICAL STUDIES

摘要

Two kinds of [Tc(CO)_3LB] complexes were obtained and studied, where L is either a neutral chelating ligand with N, S donor atoms, N-methyl-2-pyridinecarbothio-amide, L_(NS), or its analogue with N, O donor atoms, N-methyl-2-pyridinecarboamide, L_(NO), and B is a monovalent anion or H_2O. The complexes were prepared both with ~(99m)Tc at n.c.a. level (B = OH~- or H_2O) and with ~(99)Tc in milligram quantities (B = Cl~-).^sThe complexes were investigated by HPLC, IR and paper electrophoresis. Also, advanced (DFT) quantum chemistry calculations on the [Tc(CO)_3LCl] complexes were made.