Reaction of thiolato-ligands with rhenium hydrides - III. Complexes of mercaptopyridines. The syntheses and X-Ray crystal structures of [ReHF(2-SC5H4N)2(PMe2Ph) 2]BF

The hydride complex [ReH5(PMe2Ph)3] reacted with 2-mercaptopyridine(pySH) in the presence of HBF4 giving [ReH(pyS)(PMe2Ph)4]BF4 (1) and [ReHF(pyS)2 (PMe2Ph)2]BF4 (2). The X-ray structures of both complexes have been determined and are discussed. The known complex [ReH(pyS)2(PPh3)2] and new [ReH(SipyS)2(PPh3)2] (3) have been prepared directly from [ReOCl3(PPh3)2], NaBH4 and the appropriate thiol. Analogous reaction of [ReOCl3(dppe)] (dppe = Ph2PCH2CH2PPh2) with pySH gave [ReH4(pyS)(dppe)] (4).