Hybrid cavitand capsule with hydrogen bonds and metal-ligand coordination bonds: guest encapsulation with anion assistance
| Autor: | Kenji Kobayashi, Naoaki Toyoda, Masamichi Yamanaka |
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| Rok vydání: | 2009 |
| Předmět: |
Anions
Organoplatinum Compounds Inorganic chemistry Supramolecular chemistry Molecular Conformation macromolecular substances Ligands Biochemistry Catalysis Metal Colloid and Surface Chemistry Ethers Cyclic Polymer chemistry Molecule Alkyl chemistry.chemical_classification Hydrogen bond Cavitand Hydrogen Bonding Stereoisomerism General Chemistry Resorcinols Solvent Kinetics chemistry visual_art visual_art.visual_art_medium Trifluoromethanesulfonate |
| Zdroj: | Journal of the American Chemical Society. 131(29) |
| ISSN: | 1520-5126 |
| Popis: | Multifunctionalized C(2v)-cavitand 1 was synthesized in six steps from a tetrabromo cavitand. A 1:1 mixture of 1 and 2 in CDCl(3) or CD(2)Cl(2) quantitatively self-assemble into a supramolecular hybrid capsule 3 through hydrogen bond and metal-ligand coordination bond. The cavity of the capsule 3 is filled with triflate ion and penetrated alkyl groups of ureides. Capsule 3 encapsulates a neutral guest molecule such as 4,4'-diiodobiphenyl (4) with the assistance of an anion. The encapsulation complex was identified by an NMR technique. The kinetics of guest exchange is controllable by the amounts and/or types of anions or other influences such as the polarity of the solvent. |
| Databáze: | OpenAIRE |
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