Reduction and electrochemistry of C[sub 60] in liquid ammonia

Journal Article · Wed Dec 30 04:00:00 EST 1992 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00053a072· OSTI ID:6200235

Zhou, Feimeng; Jehoulet, C; Bard, A ^[1]

---

1. Univ. of Texas, Austin (United States)

The authors report here the reduction of C[sub 60] slurries by solvated electrons (e[sub s][sup [minus]]) generated electrochemically in liquid ammonia and the cyclic voltammetry (CV) of the C[sub 60][sup [minus]] solution produced. Waves corresponding to both soluble and insoluble forms of C[sub 60][sup n[minus]] were observed, with n spanning the range 0-6 (depending on the supporting electrolyte used). C[sub 60] in solvents in which C[sub 60] and its reduced products are soluble, e.g., CH[sub 2]Cl[sub 2], benzene, and toluene, showed up to five CV waves, and by use of mixed solvents at low temperature, the presence of six CV redox waves for le[sup [minus]] reduction steps up to C[sub 60][sup 6[minus]] was demonstrated, showing complete filling of the three degenerate molecular orbitals of C[sub 60]. The authors previously showed that C[sub 60] was insoluble in MeCN and that redox processes of films of C[sub 60], involving doping of the films with electrolyte cation, M[sup +] [M[sup +] = tetra-n-butylammonium (TBA[sup +]), Li[sup +], K[sup +]], could be observed. Studies of film mass changes with the quartz crystal microbalance (QCM) have indicated higher solubility of the reduced forms in MeCN, with the C[sub 60][sup 3[minus]] form soluble in TBA[sup +] solutions. Indeed, slurries of C[sub 60] could be reduced electrochemically in MeCN to the [minus]3 form, which could then be oxidized to insoluble films on the electrode. The authors now describe experiments in liquid NH[sub 3] at [minus]70[degrees]C, where C[sub 60] slurries are dissolved by reaction with e[sub s][sup [minus]]. 16 refs., 1 fig., 1 tab.

• OSTI ID: 6200235
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 114:27; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400400* -- Electrochemistry
400600 -- Radiation Chemistry
ALKYLATED AROMATICS
AMMONIA
AROMATICS
BENZENE
CARBON
CHEMICAL REACTIONS
CHEMISTRY
DISPERSIONS
ELECTROCHEMISTRY
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FILMS
FULLERENES
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
LEPTONS
METHYLENE CHLORIDE
MIXED SOLVENTS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
REDUCTION
SLURRIES
SOLUBILITY
SOLVATED ELECTRONS
SOLVENTS
SUSPENSIONS
TOLUENE
VOLTAMETRY