Synthesis and characterization of mixed-ligand oxorhenium complexes with the SNN type of ligand. Isolation of a novel ReO[SN][S][S] complex

The preparation of a new series of mixed-ligand oxorhenium complexes with ligands containing the SNN donor set (general formula RCH(sub 2)(CH(sub 2)NHCH(sub 2)CH(sub 2)SH, where R = N(N2H5)(sub 2), pyrrolidin-1-yl, or N[CH(CH3)](sub 2)) and monodentate thiols as coligands is presented. When R = N[CH(CH3)](sub 2), the tertiary nitrogen of the ligand does not participate in the coordination sphere of the metal, a novel type of '2+1+1' [SN][S][S] complex was obtained and X-ray and NMR assignments were performed for these mixed-ligand complexes.