FULLERO-POLYCORONANDS

A novel class of polycoronands is described with each coronand structu re replacing a smaller sized ring on the surface of a fullerenic polyh edron. The coronand structures evidently relieve some curvature strain . Further through the complexation of metal ions in the coronand struc tures, there arises the possibility of closing and opening these holes , thereby allowing not only the storage of another species in the endo hedral cavity, but also the controlling of the circumstances for it to enter or leave. Results and rules for the stabilities of the icosahed ral-symmetry species are reported.