Trifluoromethylation of C₆₀ and C₇₀ with Mercury(II) Trifluoroacetate

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• We failed to obtain a 19F NMR spectrum (in C6D6) of this fine coating owing to having insufficient material. However, when we attempted to perform the trifluoromethylation of C60 with Hg(OCOCF3)2 by heating the reaction mixture in vacuo, a pronouncedly thicker white film was formed on the wall in the cold part of the ampoule, with the temperature achieving 200°C only. The experiment was stopped and the 19F NMR spectrum of the film was recorded that matched above one of Hg(CF3COO)2. Moreover, in the other run under argon when the temperature raise period was significantly longer the white film turned out to be greater, enough for recording the 19F NMR spectrum (δ TFA (external) ppm, C6D6: 5.2 (s)). It again coincided with that of Hg(CF3COO)2 The possible sublimation of mercury(II) trifluoroacetate was the main reason why we decided on the ‘argon’ method with rather short temperature raise time instead of ‘vacuum’ one
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