Mutual transformation between mono- and binuclear ruthenium complexes and their reactions with iminobis(diisopropylphosphinesulfide) ligand
摘要:
Treatment of RuCl3 center dot xH(2)O, PPh3 and HCHO in boiling 2-methoxyethanol led to isolation of complex [(PPh3)(CO)ClRu(mu-Cl)(3)Ru(CO)(PPh3)(2)] (1) and [RuCl2(CO)(CH3OH)(PPh3)(2)](2), which could convert to each other under special conditions. 1 could turn to 2 in MeOH/Et2O solvent in the presence of excess PPh3, while 2 could transform to 1 in CH2Cl2/n-hexane solvent. Reactions of complex 1 or 2 with KN[(Pr2P)-Pr-i(S)](2) afforded complex [{RuCl(CO)(PPh3)}(2)(mu-Cl)(mu-eta(2)(S),eta(2)(S')-N((Pr2PS)-Pr-i)(2))] (3), in which the N[P(S)Pr-i(2)](2) ligand acts as a dinucleating tetraconnective unit through both sulfur atoms between two Ru(II) atoms. Complexes 1, 2, and 3 have been characterized spectroscopically and by X-ray crystallography. (C) 2012 Elsevier B. V. All rights reserved.