ELECTROCHEMICAL STUDIES OF THE PROTONATION OF C-60- AND C-60(2-)

被引：71

作者：

CLIFFEL, DE ^{[1
]}

BARD, AJ ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM & BIOCHEM,AUSTIN,TX 78712

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 33期

关键词：

D O I：

10.1021/j100084a036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cyclic voltammetric reduction of C-60 to the radical anion, C-60(-), is unaffected by the presence of weak proton donors in o-dichlorobenzene, indicating that the monoanion is a weak base. Further reduction to the dianion results in a drastic increase in basicity, and an estimate of the acidity of the conjugate acid, C60H-, is obtained. Bulk electrolysis studies allow further characterization of the monoanion properties, including an estimate of the acidity of C60H. relative to triflic acid. The dianion can be titrated in acetonitrile by triflic acid to form an orange solution that FAB mass spectral analysis indicates is C60H2. Spectrophotometric titration of the anions reveals two new, distinct species, which we attribute to C60H. and C60H-.

引用

页码：8140 / 8143

页数：4

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