The Preparation and Characterization of the Fullerene Diols 1,2-c60(oh)2, 1,2-c70(oh)2, and 5,6-c70(oh)2
نویسندگان
چکیده
We have found that compounds formed between fullerenes and RuO4 can be hydrolyzed to the corresponding diols. RuO4 is easily prepared by the reaction of NaIO4 with RuO2 hydrate and subsequent extraction into CCl4. Due to a very low solubility of C60 or C70 in CCl4 we chose 1,2,4trichlorobenzene (TCB) as a main component of the reaction medium. TCB is an excellent solvent for C60 or C70 and is also relatively unreactive towards RuO4. The addition of 2 equivalents of freshly prepared RuO4 in CCl4 to a stirred TCB solution of fullerene (C60 or C70) instantly produced a black precipitate. Precipitation of the insoluble fullerene-ruthenium complex (possibly a ruthenate ester) reduces the amount of further additional degradation by RuO4.
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تاریخ انتشار 2001