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Discovery of C(60)O(3) isomer having C(3)(nu) symmetry.

A hitherto undetected type of C(60)O(3) isomer was found in the reaction solution of C(60) with m-chloroperoxybenzoic acid by means of a chromatographic technique using two different columns. Both electronic spectroscopy and atmospheric pressure chemical ionization (APCI) mass-spectroscopy examinations show its C(3)(nu) symmetry, in which three oxygen atoms are added onto one benzenoid ring of C(60).