Reaction of diazocompounds with C70: unprecedented synthesis and characterization of isomeric [5,6]-fulleroids†

Abstract

The synthesis of a variety of PCBM-type [5,6]-fulleroids and their further highly selective photoisomerization to the respective [6,6]-methanofullerenes is presented. Interestingly, the chemical reactivity of [5,6]-fulleroids reveals the same trend (a 4 b 4 c 4 d) to that observed for pristine C70 (a 4 b 4 c 4 d).