78780-25-3Relevant academic research and scientific papers
DIENE AND DIENYL COMPLEXES OF TRANSITION ELEMENTS II. THE PROTONATION OF η-DIARYLDIENONE(η-CYCLOPENTADIENYL)-RHODIUM(I) AND -IRIDIUM(I) COMPLEXES
Powell, Paul
, p. 229 - 237 (2007/10/02)
Reaction of 4-PhCH=CRCH=CHCOPh)(η5-C5H5)>, with HBF4 or HPF6 affords the crystalline salts 3-PhCHCRCHCH2COPh)(η5-C5H5)>Y, , in which the acyl CO group is coordinated to the metal.HCl and HBr also protonate the dienone complexes (M = Rh) at carbon, giving the covalent derivatives 3-PhCHCHCHCH2COPh)(η5-C5H5)>, .A mechanism involving endo addition of H+ to the η4-dienone ligand is in accord with deuteration studies. 1H and 13C NMR spectra of the new complexes are discussed.Thereactions of 4-PhCHCHCHCHPh)(η5-C5H5)> with HCl and HBr are also reported.
