The first X-ray structural determinations of pristine fullerene C(60), cocrystallized 1:1 with corannulene and with its pentaalkyl-substituted derivative, 1,3,5,7,9-penta-tert-butyl-corannulene, have now been achieved.

The 5,6-dialkoxyethers of acenaphthene have been synthesized for the first time via modified Ullmann reaction conditions. Further modifications of the 5,6-dimethoxyacenaphthene allowed the synthesis of the first acenaphthene analogue of the octahomotetraoxacalixarenes. The X-ray structure of this new macrocycle and its complexation study with C(60) are reported.

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New macrocyclic O-naphthoides 4-6 were synthesized from dehydration reactions of 3-hydroxy- and 7-tert-butyl-3-hydroxy-2-naphthoic acids, respectively. Their X-ray structures were determined and their clathrate inclusion properties were investigated. Hexamer 6 formed an inclusion clathrate with four chloroform molecules. The trimer 5, by analogy with tri-o-thymotide, was studied for its potential optical resolution effects.