Covalently Chemical Modification of Lithium Ion-Encapsulated Fullerene: Synthesis and Characterization of [Li⁺@PCBM]PF₆^–

Covalently organic derivatization of [Li⁺@C₆₀]PF₆^– to obtain Li⁺-encapsulated PCBM, [Li⁺@PCBM]PF₆^–, is described. Synthetic procedures, electrochemical properties, light absorption properties, details of isomerization from [5,6]- to [6,6]-isomer, and X-ray crystal structure of [Li⁺@PCBM]PF₆^– are discussed

Iridium and Platinum Complexes of Li⁺@C₆₀

Iridium and platinum complexes of the lithium cation encapsulated fullerene Li⁺@C₆₀ were synthesized and structurally determined. The encapsulated Li⁺ strengthens the π back-bonding from the transition-metal center to the fullerene cage and is attracted toward the two negatively charged carbon atoms bound to the transition metal in the solid state