The dumbbell bis Diels–Alder adduct between tetramethylidene[4H]tetrathiafulvalene and two C60

Abstract Dumbbell C 60 –TTF–C 60 was synthesized by a double cycloaddition of C 60 with the unprecedented tetramethylidene[4 H ]TTF generated in situ from tetrakis (bromomethyl)TTF.