128594-73-0Relevant academic research and scientific papers
Toward metal-mediated C-F bond formation. Synthesis and reactivity of the 16-electron fluoro complex [RuF(dppp)2]PF6 (dppp = 1,3-bis(diphenylphosphino)propane)
Barthazy,Stoop,Worle,Togni,Mezzetti
, p. 2844 - 2852 (2000)
The five-coordinate fluoro complex [RuF(dppp)2]PF6 (1a) has been prepared by reacting [RuCl(dppp)2]PF6 (1b) with TlF (dppp = 1,3-bis(diphenylphosphino)propane). An X-ray investigation of 1a shows a distorted trigonal bipyramidal geometry (Y-shaped). The 16-electron complex 1a reacts with a number of donors, including CO, H2, and F-. The X-ray structure of trans-[RuF(CO)(dppp)2]PF6 (2aBPh4) suggests that the π-donor ability of the fluoro ligand is only slightly higher than that of chloride. The reaction of 1a with [Me4N]F gives cis-[RuF2(dppp)2] (3), a rare difluoro complex not stabilized by π-acidic co-ligands. The Ru-F bond of 1a is hydrogenolyzed upon reaction with H2 to give [RuH(η2-H2)(dppp)2]+. The coordinatively unsaturated complex 1a reacts with activated haloalkanes R-X (X = Cl or Br) in 1:1 molar ratio to give the fluorinated organic derivative and [RuX(dppp)2]+. The halide metathesis proceeds instantaneously and quantitatively with (E)-3-bromo-1,3-diphenylpropene and chlorotriphenylmethane. Substrate conversion decreases with decreasing substitution at the halogen-bearing carbon atom.
