The dimethyl Pd II complex (Me 3tacn)Pd IIMe 2 (Me 3tacn = N,N′,N″-trimethyl- 1,4,7-triazacyclononane) undergoes facile aerobic oxidation to yield the stable species [(Me 3tacn)Pd IVMe 3] +. EPR, UV-vis, and ESI-MS studies suggest an inner-sphere mechanism for the oxidation of (Me 3tacn)PdMe 2 by O 2 and formation of Pd IV species. In addition, the structurally characterized complex [(Me 3tacn)Pd IVMe 3]I undergoes selective elimination of ethane at elevated temperatures. Overall, this system represents one of the first examples of aerobic oxidation of a Pd II organometallic precursor to yield a well-defined Pd IV product, supporting the role of Pd IV species as viable intermediates in Pd-mediated catalytic or stoichiometric aerobic oxidative transformations.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry