Aqueous organometallic chemistry. Synthesis and solution equilibria of trisodium carbonylchlorotris[3-(diphenylphosphino-κP)benzenesulfonato]- hydridoruthenate(3-) ([RuH(Cl)(CO){m-(Ph2P)-C6H 4-SO3Na}3]) and trisodium aquacarbonyltris[3- (diphenylphosphino-κP)benzenesulfonato]-hydridoruthenate(2-)

Gábor Papp, Henrietta Horváth, Ágnes Kathó, Ferenc Joó

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An improved procedure for the preparation of the known H 2O-soluble hydrogenation and hydroformylation catalyst, [RuH(Cl)(CO)(mtppms)3] (mtppms = meta-monosulfonated triphenylphosphine) was developed. In contrast to the methods reported earlier, this synthesis yields the complex free of mtppms impurities. 1H- and 31P{H}-NMR measurements revealed that in aqueous solution, [RuH(Cl)(CO)(mtppms)3] reversibly dissociated to give [RuH(CO)(H 2O)(mtppms)3]+ (Scheme). The equilibrium constant of this dissociation was determined as 9.8·10-2 M at 293 K. Such a dissociation was not observed in MeOH but took place to varying degrees in MeOH/H2O mixtures of varying composition. [RuH(CO)(H 2O)mtppms)3][BF4] was also obtained on an independent synthetic route: by ligand exchange in [RuH(CO)(NCMe) 2(PPh3)2][BF4] (Scheme). The results may help the understanding of the mechanisms of reactions catalyzed by [RuH(Cl)-(CO)(mtppms)3] in aqueous solutions or in aqueous-organic biphasic systems.

Original languageEnglish
Pages (from-to)566-573
Number of pages8
JournalHelvetica Chimica Acta
Volume88
Issue number3
DOIs
Publication statusPublished - Apr 21 2005

ASJC Scopus subject areas

  • Catalysis
  • Biochemistry
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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