Unfilled and endohedrally-filled fullerenes and hetero-fullerenes

摘要

Fullerenes (I), comprising unfilled multishell fullerenes and hetero-fullerenes and endohedrally-filled single- and multi-shell fullerenes and heterofullerenes, are new. Their cage structural elements consist mainly of pentagons and hexagons and can also contain tetragons and/or holes larger than hexagons and the cage network can contain C, N, B, O, S or only N and B. (I) are obtd. by : (a) high pressure pyrolysis of dissolved non-spherical monomers (II) contg. aromatic annelated rings or substances forming these on pyrolysis, opt. in the presence of unfilled single- or multi-shell (hetero)fullerenes, and alkylation before and/or during pyrolysis; or (b) pyrolysis of metallocene derivs. (III) contg. simple and/or annelated ring at normal pressure or in vacuo.