329977-99-3Relevant academic research and scientific papers
Facile conversion of bis(alkynyl) into diyne ligand on platinum assisted by electrophilic gold phosphine
Ursini, Cleber V.,Dias, Gilson H.M.,H?rner, Manfredo,Bortoluzzi, Adailton J.,Morigaki, Milton K.
, p. 2261 - 2268 (2000)
31P NMR spectroscopy measurements were used to establish the course for the stoichiometric-dependent reactions between [Au(PPh3)]+ and [Pt(C≡CPh)2(dppf)] (1), which for equimolar amounts afford as the unique product [Pt-{η3-C(C≡CPh)=C(Ph)Au(PPh3)}(dppf)] + (2), but any excess of 1 gives also [Pt(η2-PhC≡CC≡CPh)(dppf)] (3) [dppf = 1,1′-bis(diphenylphosphine)ferrocene]. Both compounds 2 and 3 were obtained straightforwardly by the reactions of 3 with [Au(PPh3)]+ and [Pt(C2H4)(dppf)] with 1,4-diphenylbutadiyne, respectively. The X-ray crystal structure analysis of 3 confirmed a trigonal-planar coordination geometry about the platinum atom, and a bent η2-coordinated diyne ligand.
