Novel [<sup>99m</sup>Tc<sup>III</sup>(PS)<sub>2</sub>(Ln)] Mixed-Ligand Compounds (PS = Phosphino-thiolate; L = Dithiocarbamate) Useful in Design and Development of Tc<sup>III</sup>-Based Agents: Synthesis, in Vitro, and ex Vivo Biodistribution Studies
pyrrolidine dithiocarbamate) was determined by HPLC comparison with the corresponding 99gTc-complex. All complexes comprise the stable [99mTcIII(PS)2]+ moiety, where the remaining two coordination positions are saturated by a dithiocarbamate chelate, also carrying bioactive molecules (e.g., 2-methoxyphenylpiperazine). [99mTc(PS)2(Ln)] complexes were inert toward ligand exchange reactions. No significant in
Synthesis and Characterization of [M<sup>III</sup>(PS)<sub>2</sub>(L)] Mixed-Ligand Compounds (M = Re, <sup>99</sup>Tc; PS = Phosphinothiolate; L = Dithiocarbamate) as Potential Models for the Development of New Agents for SPECT Imaging and Radiotherapy
The synthesis and characterization of a new series of neutral, six-coordinated mixed-ligand compounds [MIII(PS)2(L)] (M = Re; 99Tc), where PS is bis(arylalkyl)- or trialkylphosphinothiolate and L is dithiocarbamate, are reported. Stable [MIII(PS)2(L)] complexes were easily synthesized, in good yield, starting from precursors where the metal was in different oxidationstates (III, V, and VII), involving