Do Platinum(II) and Palladium(II) Phosphinito Phosphinous Acids Generate the Same Type of Reactive Intermediate in Alkyne Coordination? A Gas-Phase Study with Phenylethyne and Propargyl Acetate.

The structure and behavior of the catalytic species involved in the phosphinous acid (PA)complexes, (PA)Pd- and (PA)Pt-catalyzed formal [2 + 1] cycloaddn. between an alkyne and norbornadiene were studied by combined mass spectrometry expts. and d. functional theory calcns. The 1st step of this reaction, the coordination of the catalyst with the alkyne, is also studied under collision-activated reaction conditions. Two different structures are proposed for the key intermediates: an acetylide structure for Pd and a metallacarbene for Pt. [on SciFinder(R)]

Références

Titre
Do Platinum(II) and Palladium(II) Phosphinito Phosphinous Acids Generate the Same Type of Reactive Intermediate in Alkyne Coordination? A Gas-Phase Study with Phenylethyne and Propargyl Acetate.
Type de publication
Article de revue
Année de publication
2011
Revue
Organometallics
Volume
30
Pagination
4814–4821
ISSN
0276-7333
Soumis le 12 avril 2018