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The organoplatinum compound of C60, C60Ptn (n = 1–2), was prepared either by the reaction of C60 with Pt(dba)2 or by the thermal disproportionation of C60Ptn (n = ca. 1). The C60Ptn obtained catalyzed the hydrogenation of diphenylacetylene regardless of the platinum content. Cleavage of carbon-platinum bonds of C60Ptn (n = ca. 1) was accomplished by the reactions with phosphines or phosphites, which provided general access to (η2-C60)PtL2 [L = phosphines and phosphites].

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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.