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Water-soluble triisopropylphosphine complexes of ruthenium(ii): synthesis, equilibria, and acetonitrile hydration

AuthorsMartín, Marta ; Sola, Eduardo ; Horváth, Henrietta
Issue Date2009
PublisherAmerican Chemical Society
CitationOrganometallics 28(2): 561-566 (2009)
AbstractThe complex [RuCl(NCMe)4(PiPr3)]BF4 (1) and its water-soluble dicationic products of chloride replacement by Pi Pr 3 (2), P(OMe)3 (3), Hpz (4), MeOH (5), and H2O (6) have been prepared and characterized. The chloride dissociation constant of 1 in water (Kd = 2.0 M) and the pKa (10.5) for the deprotonation of the water ligand of 6 have been determined by NMR methods. The conjugate base of 6, [Ru(OH)(NCMe)4(PiPr3)]+ (7), has been observed to isomerize into an amidate complex in route to acetonitrile hydration. Consistently, 6 has been found to catalyze the selective hydration of acetonitrile to acetamide in aqueous solution at pH 10.5 and 353 K, with initial TOF about 50 h-1.© 2009 American Chemical Society.
Identifiersdoi: 10.1021/om8008553
issn: 0276-7333
e-issn: 1520-6041
Appears in Collections:(ICMA) Artículos
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