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Host‐Guest Chemistry of Truncated Tetrahedral Imine Cages with Ammonium Ions

Lauer, Jochen C.; Pang, Ziwei; Janßen, Paul; Rominger, Frank; Kirschbaum, Tobias; Elstner, Marcus; Mastalerz, Michael

Abstract:
Three shape-persistent [4+4] imine cages with truncated tetrahedral geometry with different window sizes were studied as hosts for the encapsulation of tetra-n-alkylammonium salts of various bulkiness. In various solvents the cages behave differently. For instance, in dichloromethane the cage with smallest window size takes up NEt$_{4}$t$^{+}$ but not NMe$_{4}$t$^{+}$, which is in contrast to the two cages with larger windows hosting both ions. To find out the reason for this, kinetic experiments were carried out to determine the velocity of uptake but also to deduce the activation barriers for these processes. To support the experimental results, calculations for the guest uptakes have been performed by molecular mechanics’ simulations. Finally, the complexation of pharmaceutical interested compounds, such as acetylcholine, muscarine or denatonium have been determined by NMR experiments.

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Verlagsausgabe §
DOI: 10.5445/IR/1000117980
Veröffentlicht am 31.03.2020
Originalveröffentlichung
DOI: 10.1002/open.201900357
Scopus
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Physikalische Chemie (IPC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2191-1363, 2191-1363
KITopen-ID: 1000117980
Erschienen in ChemistryOpen
Band 9
Heft 2
Seiten 183–190
Vorab online veröffentlicht am 03.02.2020
Nachgewiesen in Web of Science
Scopus
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