SYNTHESIS, PROPERTIES AND CHARGE-TRANSFER COMPLEXES OF COVALENTLY ATTACHED [60]FULLERENE-TETRATHIAFULVALENES

The synthesis of several fulleropyrrolidines bearing differently subst itued tetrathiafulvalenes is reported. The synthetic approach used all ows the introduction of ethylene spacers between the TTF and the C-60 core. Charge transfer complexes obtained from these [60]fullerene-TTF systems by reaction with tetrafluoro-tetracyano-p-quinodimethane (TCNQ F(4)) show a semiconducting behaviour; theoretical calculations predic t an intramolecular CT band from the TTF moiety to the C-60 core. (C) 1997 Elsevier Science Ltd.