期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 14, 期 36, 页码 11593-11600出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200800819
关键词
anions; calixpyrroles; capsules; hydrogen bonding; molecular recognition; self-assembly
资金
- University of Messina
10 alpha.20 alpha-Bis(4-nitrophenyl)-calix[4]pyrrole (1) forms 1:1 complexes with anions of selected aromatic hydroxy acids in which the host orientation within the guest is controlled by a change in the pH value. Some bis-anionic guests, including those obtained from 4-hydroxybenzoic acid. 1,4- and 1,3-benzenedicarboxylic acids, induce the self-assembly of molecular capsules involving two molecules of the receptor. H-1 NMR data and solid-state structures of the 1:1 complex of 1 with p-C6H4(COOH)(COO-)+NMe4 and the 2:1 capsule [(1)(2)m-C6H4(COO-)(2)-(+NMe4)(2)] provide structural details in solution and in the solid state.
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