Synthesis and structure of nitrogen bridged calix[5]- and -[10]-pyridines and their complexation with fullerenes |
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| Authors: | Liu Shi-Qiang Wang De-Xian Zheng Qi-Yu Wang Mei-Xiang |
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| Institution: | Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China. |
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| Abstract: | Azacalix5]pyridine, a heteroatom bridged calixaromatic with an odd number of arene units, and azacalix10]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). |
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