Syntheses of ruthenium hydridotris (1-pyrazoryl) borate complexes having sulfur-donor coligands

Article abstract of DOI:10.1016/s0020-1693(97)06063-5

Treatment of [TpRuCl(PPh₃)₂] ((1); Tp = hydridotris(1-pyrazolyl)borate) with NaS₂CNMe₂ afforded the dithiocarbamate complex [ TpRu(η₂-S₂CNMe₂) (PPh₃) ] (2) in high yield. The structure of 2 has been determined unambiguously by X-ray diffraction study. Complex 1 also reacted with a mixture of excess TolSSTol (Tol = ρ-MeC₆H₄) and Zn powder to give a novel trinuclear complex with bridging thiolate ligands [ {TpRu(PPh3) (μ-STol)₂}₂Zn] (3) in moderate yield, which has been characterized spectroscopically and by elemental analyses. Initial treatment of 1 with an equimolar amount of AgBF₄ followed by the reaction with a mixture of TolSSTol and Zn also resulted in the formation of 3 as the major product. However, from this reaction mixture, a dinuclear complex closely related to 3, [TpRu(PPh₃)-(μ-STol)₂Zn(STol)(MeOH) ], was able to be isolated in quite a low yield, which has also been fully characterized by the X-ray analysis.