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Structure and fluxional behavior of platinum and palladium complexes having MSi or MSn (M=Pt or Pd) inter-element linkages

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
611
Identifiers
DOI: 10.1016/s0022-328x(00)00449-6
Keywords
  • Bis(Stannyl)Bis(Phosphine)Platinum
  • Bis(Silyl)Bis(Phosphine)Platinum
  • Bis(Stannyl)Bis(Phosphine)Palladium
  • Fluxional Behavior
  • Active Catalyst Species

Abstract

Abstract Hexamethyldistannane reacts with Pt{P(MeC 6H 4) 3} 4 at −30°C to afford the oxidative addition product: cis-[Pt(SnMe 3) 2{P(MeC 6H 4) 3} 2]. The structure is distinctly distorted from planarity: the dihedral angle between the PPtP and the SnPtSn planes is 34.6°. The solution 31P-NMR spectra indicate that the complex shows reversible fluxional behavior. The fluxional process is attributed to the intramolecular twist-rotational motion via pseudo tetrahedral transition state. A similar fluxional process is observed with bis(silyl)bis(phosphine)platinum and bis(stannyl)bis(phosphine)palladium complexes.

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