Synthesis and characterization of O-methyldithiocarbonate and triphenylphosphoniodithiocarboxylate complexes containing a tris(pyrazolyl)borato (Tp) ligand

摘要

The O-methyldithiocarbonate and triphenylphosphoniodithiocarboxylate complexes having a Tp ligand (Tp = BH(pyrazol-1-yl)3) were prepared. The CS2 insertion of ruthenium chloride complex Tp(PPh3)2Ru-Cl (1) in the presence of CH3OH resulted in the O-methyldithiocarbonate complex Tp(PPh3)Ru(κ~2-S2COCH3) (3) and triphenylphosphoniodithiocarboxylate complex [Tp(PPh3)Ru(κ2-S2CPPh3)]Cl (4) with the zwitterion ~-S2CPPh_3~+ as a chelating ligand depending on the reaction conditions. Attractively, this outcome contrasts sharply with similar reaction of carbon disulfide with Cp(PPh3)2Ru-Cl, no reaction is observed, even under drastic, vigorous conditions. The structures of 3 and 4 have been determined by X-ray diffraction analysis.