title: Synthesis and structure of nitrogen bridged calix[5]- and -[10]-pyridines and their complexation with fullerenes.
abstract: Azacalix[5]pyridine, a heteroatom bridged calixaromatic with an odd number of arene units, and azacalix[10]pyridine, a giant molecular belt, were selectively synthesized based on a 2 + 3 macrocyclic coupling strategy; both novel macrocyclic hosts formed strong 1 : 1 complexes with fullerenes C60 and C70 in a size-selective manner with association constants up to 1.3 x 10(5) +/- 0.03 x 10(5) M(-1).
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
authors.forename: Shi-Qiang
authors.initials: SQ
authors.lastname: Liu
authors.forename: De-Xian
authors.initials: DX
authors.lastname: Wang
authors.forename: Qi-Yu
authors.initials: QY
authors.lastname: Zheng
authors.forename: Mei-Xiang
authors.initials: MX
authors.lastname: Wang
mesh_terms: D047250:Calixarenes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003500:Cyclization; D037741:Fullerenes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008958:Models, Molecular; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry*; D011725:Pyridines / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: D037741:Fullerenes; D011725:Pyridines; D047250:Calixarenes; D009584:Nitrogen