title: Efficient synthesis, structure, and complexation studies of electron-donating thiacalix[n]dithienothiophene.
abstract: A series of thiacalix[n]dithiothiophenes (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 C60 molecules, whereas the 5- and 6-mer formed stable 1:1 complexes with C60  .
authors: Department of Chemistry, School of Science, Kitasato University, Sagamihara, Kanagawa 252-0373 (Japan) http://www.kitasato-u.ac.jp/sci/resea/kagaku/HP_kinou/Index.html.
authors: Ryota
authors: R
authors: Inoue
authors: Masashi
authors: M
authors: Hasegawa
authors: Tohru
authors: T
authors: Nishinaga
authors: Kenji
authors: K
authors: Yoza
authors: Yasuhiro
authors: Y
authors: Mazaki
keywords: cross-coupling; electrochemistry; macrocycles; sulfur heterocycles; supramolecular chemistry