Mechanistic information of substitution reaction of W(PhC≡CPh)3(CO) with trimethylphosphine
摘要:
Substitution reaction of W(PhC=CPh)(3)(CO) (1) with PMe3 to give W(PhC=CPh)(3)(PMe3) (2) has been studied by IR and NMR spectroscopy as well as cross-over experiments. A metastable intermediate W(CO)(PhC=CPh)(2)(PMe3)(2) (3) is produced by adding two PMe, moieties into 1 accompanied with loss of a PhC=CPh ligand. Subsequent conversion from 3 to 2 might involve decarbonylation and PMe3/PhC=CPh exchange. (C) 1997 Elsevier Science S.A.
Mechanistic information of substitution reaction of W(PhC≡CPh)3(CO) with trimethylphosphine
摘要:
Substitution reaction of W(PhC=CPh)(3)(CO) (1) with PMe3 to give W(PhC=CPh)(3)(PMe3) (2) has been studied by IR and NMR spectroscopy as well as cross-over experiments. A metastable intermediate W(CO)(PhC=CPh)(2)(PMe3)(2) (3) is produced by adding two PMe, moieties into 1 accompanied with loss of a PhC=CPh ligand. Subsequent conversion from 3 to 2 might involve decarbonylation and PMe3/PhC=CPh exchange. (C) 1997 Elsevier Science S.A.