Encapsulation of biogenic polyamines by carboxylcalix[5]arenes: when solid-state design beats recognition in solution?
CrystEngComm Pub Date: 2016-04-14 DOI: 10.1039/C6CE00468G
Abstract
The biogenic tetraamines, spermine and norspermine, are efficiently encapsulated in the solid state by two molecules of carboxylcalix[5]arene, by means of a highly regioselective proton-transfer followed by bis-endo-cavity inclusion, providing overall-neutral complexes with a 70–72% packing coefficient, despite the modest affinity shown in solution.
![Graphical abstract: Encapsulation of biogenic polyamines by carboxylcalix[5]arenes: when solid-state design beats recognition in solution](http://scimg.chem960.com/usr/1/C6CE00468G.jpg)
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Journal Name：CrystEngComm
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CAS no.: 89640-58-4
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