Efficient Synthesis, Structure, andComplexation Studies of Electron-Donating Thiacalixndithienothiophene

摘要

A series of thiacalixndithiothiophenes (n=4-10) was prepared by a facile method and X-ray analysis was used to determine the molecular structures of square- (4-mer) and pentagonal-shaped macrocycles (5-mer). In the cyclic voltammograms, reversible multielectron redox processes, which are due to electronic delocalization, were observed at low oxidation potentials. The cyclic 4-mer acted as a Janus-head cavitand for two C-60 molecules, whereas the 5- and 6-mer formed stable 1:1 complexes with C-60.