[2]Pseudorotaxanes based on the cryptand/monopyridinium recognition motif |
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| Authors: | Feihe Huang Arnold L Rheingold Amanda Ohs Harry W Gibson |
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| Institution: | a Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
b Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA |
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| Abstract: | The first cryptand/monopyridinium 2]pseudorotaxanes were prepared from five bis(m-phenylene)-32-crown-10- and one bis(m-phenylene)-26-crown-8-based cryptand hosts and three monopyridinium guests. These pseudorotaxanes were studied by proton NMR spectroscopy, mass spectrometry, and X-ray crystallography. Association constants ranged from 141 M−1 to 1.86×104 M−1 in 1:1 acetone: chloroform at 22 °C. |
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| Keywords: | Host-guest systems Self-assembly Pseudorotaxane Cryptand Pyridinium |
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