Abstract

An open-cage C60 derivative 9 with anilino, hemiketal, and lactone moieties on the edge of the opening was prepared through a fullerene-mixed peroxide procedure. Key steps include decarbonylation, intramolecular Friedel-Crafts reaction and oxetane ring opening rearrangement. The open-cage compound 9 readily reacts with various metal salts. A nickel complex was obtained by treating 9 with NiCl2 at r.t. followed by purification on a silica gel column. Single-crystal X-ray diffraction analysis showed that the nickel ion is coordinated to two ligands with an octahedral geometry.

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