Two (Me3tacn)PdII complexes (Me3tacn = N,N',N?-trimethyl-1,4,7-triazacyclononane) were oxidized by O2 to form the corresponding PdIV species. The products were fully characterized by X-ray, ESI-MS, and NMR spectrometry techniques. The dimethyl PdII complex (Me3tacn)PdIIMe2 undergoes facile aerobic oxidation to yield the stable species [(Me3tacn)PdIVMe3]+. Additionally, the structurally characterized complex [(Me3tacn)PdIVMe3]I undergoes selective elimination of ethane at elevated temperatures. Overall, these two systems represent the very rare examples of aerobic oxidation of PdII organometallic precursors to yield the well-defined PdIV products, supporting the role of PdIV species as viable intermediates in Pd-mediated catalytic or stoichiometric aerobic oxidative transformations.

Aerobic oxidation of (Me<sub>3</sub>tacn)Pd<sup>II</sup> complexes and their organometallic reactivity

245th National Meeting (2013)

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Aerobic oxidation of (Me3tacn)PdII complexes and their organometallic reactivity

Aerobic oxidation of (Me₃tacn)Pd^II complexes and their organometallic reactivity