Facile Cleavage of Carbon-Palladium Bonds in C60Pdn with Phosphines and Phosphites. An Alternative Route to (η2-C60)PdL2 and Discovery of Fluxionarity Suggesting the Rotation of C60 on the PdL2 Species in Solution

Carbon-palladium bonds in C60Pdn are easily cleaved with phosphines and phosphites to afford Ce60[PdL2]n. The reaction with C60Pdn (n = 1.0–1.4) offers an alternative synthetic route to C60PdL2. Fluxional behavior indicating rotation of C60 on the PdL2 species in solution is observed on 13C NMR spectra of C60PdL2, where L = PMe2Ph, PPh2Me, and P(OMe)3.