Lithium fullerene

Kuhn s carbanion analogues, [44 ], [45 ] and [46 ], have recently been synthesized, and the precursor hydrocarbons [44]-H, [45]-H and [46J-H dissociate into the respective anions in DMSO to show deep blue colours without any added base (Kinoshita et al., 1994). A fullerene anion, Bu Qb [47 ], has also been obtained as a stable carbanion (Fagan et al., 1992) its lithium salt has been isolated in the form Li [47 ]-4MeCN or Li [47"]-3-4THF. Several stable all-hydrocarbon anions of precursor hydrocarbons with low pKa values ( 7) are listed in Table 2, along with their oxidation potentials, ox-... 

De Meijere, StaUce and coworkers were able to generate dilithiated 111, where the tricyclic non-metalated form can be considered as a subunit of the smallest possible fullerene By a two-fold tin-lithium exchange of the bis(trimethylstanno) derivative 110 with methyllithium, the dilithium compound 111 was cleanly obtained (Scheme 39) its solid-state structure could be clarified by means of X-ray crystallography. 

Owing to their stability and low nucleophilicity, metal acetylides are less reactive toward Cjq than other lithium organyls or Grignard reagents [11]. Though the reaction is slower and higher reaction temperatures are necessary, various acetylene derivatives of Cjq could be obtained. The first acetylene Cjq hybrids were (trimethyl-silyl)ethynyl- and phenylethynyl-dihydro[60]fullerene, synthesized simultaneously... 

This review describes the preparation, characterization, and properties of all nonpolymeric complexes that contain a metal removed from the fullerene also are included. The article does not cover the essentially ionic fullerides MmC (4) or the endohedral metallofullerenes MmC (8), which have been reviewed previously. The extended fullerenes, or so-called carbon nanotubes, which have hollow centers and can be filled with metal salts, also are not discussed. The majority of complexes involve 7r-bonds and, apart from alkyl lithium fullerides, the potentially useful synthetic area of o- complexes has not been explored. Table I shows the occurrence of metal-bound adducts across the periodic table. 

Kuzubov A.A., Avramov P.V., Ovchinnikov S.G, Varganov S.A., ToMilin F.N. Electron and atomic structure of isomers of endo- and exoedral fullerene complexes with two lithium atoms. Fiz.Tv.Tela (in Russian) 2001 43 1721-1726. 

The lithium metal reduction of 7r-conjugated hydrocarbons and fullerenes... 

VII. LITHIUM REDUCTION OF FULLERENES-REDUCED POLYCYCLIC BALLS... 

In the meantime, it was found that addition of corannulene, which serves as an efficient electron shuttle between the lithium metal and the solid fullerenes, facilitates the reduction of the fullerenes to their hexaanions (Figure 19). This finding was very crucial for the continuing study of charged fullerenes40b. 

D. 3He NMR Spectra of Lithium-reduced Fullerenes —Anisotropy Inside the Cage... 

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