Platinum complexes of (R)-N,N-bis(2-(diphenylphosphino)ethyl)-1-phenyl-ethylamine: Their synthesis and characterisation

László Jánosi, Tamás Kégl, László Hajba, Zoltán Berente, László Kollár

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Both neutral and ionic platinum complexes of (R)-N,N-bis(2-diphenylphosphinoethyl)-1-phenyl-ethylamine (PNP) were synthesised. In the reaction of PtCl2(PhCN)2 and PNP cis-PtCl22-P,P-PNP) (1) was formed coordinating PNP as a P,P-bidentate ligand. Diastereotopic phosphorus atoms were observed in 31P NMR upon addition of SnCl2 to the parent complex (1) due to the formation of [PtCl(PNP)][SnCl3] (2a). The formation of similar complex cations, [PtX(PNP)]+ (where X = I (4), CN (5)) containing PNP as a terdentate ligand was also observed when KI and KCN was added in the presence of SnCl2, which formed trichlorostannate counterion. The addition of PPh3 to 1 resulted in the partial formation of [Pt(PPh3)(PNP)]2+ (3), which could be accomplished upon addition of SnCl2. The catalytic activity of the platinum-PNP system in the hydroformylation of styrene is low.

Original languageEnglish
Pages (from-to)135-139
Number of pages5
JournalInorganica Chimica Acta
Issue number1-2
Publication statusPublished - May 7 2001


  • Amine complexes
  • Aminodiphosphine complexes
  • Platinum complexes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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