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Synthesis and Characterization of Tetrakis-Silylated C60 Isomers

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journal contribution
posted on 2003-07-26, 00:00 authored by Yutaka Maeda, G. M. Aminur Rahman, Takatsugu Wakahara, Masahiro Kako, Mutsuo Okamura, Soichi Sato, Takeshi Akasaka, Kaoru Kobayashi, Shigeru Nagase
A photochemical reaction of C60 with disilane in a 2:3 ratio affords the isomer mixture of the tetrakis-adduct of C60(tBuPh2Si)4 as the major product. The use of a three-stage HPLC separation system isolated three of their isomers. Their structural assignments were based on FAB mass, UV−vis, NMR, and cyclic voltammetry (CV) measurements. The CV analysis showed that the terakis-adduct has lower oxidation and higher reduction potentials than the bis-adduct C60(tBuPh2Si)2 and the parent C60.