412347-28-5Relevant academic research and scientific papers
Thermal and photochemical silicon-carbon bond activation in donor-stabilized platinum(0)-alkyne complexes
Müller, Christian,Lachicotte, Rene J.,Jones, William D.
, p. 1190 - 1196 (2008/10/08)
Reaction of Pt(COD)2 with Me3SiC≡CPh and a bidentate chelating ligand leads to the formation of the corresponding donor-stabilized Pt-η2-alkyne complexes (PN)Pt(η2-Me3SiC≡CPh) (1) and (dcpe)Pt(η2-Me3SiC≡CPh) (3) (PN = (diisopropylphosphinodimethylamino)-ethane; dope = bis(dicyclohexylphosphino)ethane). The nitrogen donor ligand in 1 facilitates the cleavage of the Si-C(sp) bond, and the Pt(II) complex (PN)Pt(SiMe3)(C≡CPh) (2) is formed at room temperature. In contrast, the bisphosphino-substituted compound 3 has been isolated as a thermally robust Pt(0) complex. However, the silicon-carbon bond in the latter compound can be photochemically activated, and the oxidative addition product (dcpe)Pt-(SiMe3)(C≡CPh) (4) is generated. Both Si-C(sp) bonds in Me3Si-C≡C-C≡C-SiMe3 have been thermally activated by a (PN)Pt fragment to afford the dinuclear Pt(II) species (PN)-Pt(SiMe3)-C≡C-C≡C-Pt(SiMe3)(PN) (6).
