Supramolecular Assembly of Tetramethylcucurbit[6]uril and 2‑Picolylamine

The supramolecular assembly of symmetrical tetramethylcucurbit[6]­uril (TMeQ[6]) and 2-picolylamine (AMPy) has been investigated via various techniques, including ultraviolet–visible (UV–vis) and nuclear magnetic resonance spectroscopy, isothermal titration calorimetry (ITC), and X-ray crystallograp...

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Veröffentlicht in:ACS omega 2023-03, Vol.8 (11), p.9919-9924
Hauptverfasser: Fan, Ying, Cen, Ran, Shan, Peihui, Redshaw, Carl, Cong, Hang, Xiao, Xin, Ge, Qingmei
Format: Artikel
Sprache:eng
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Zusammenfassung:The supramolecular assembly of symmetrical tetramethylcucurbit[6]­uril (TMeQ[6]) and 2-picolylamine (AMPy) has been investigated via various techniques, including ultraviolet–visible (UV–vis) and nuclear magnetic resonance spectroscopy, isothermal titration calorimetry (ITC), and X-ray crystallography. The results indicated that TMeQ[6] could encapsulate the AMPy guest molecule to form a stable inclusion complex. The rotational restriction of the guest in the cavity of TMeQ[6] resulted in a large negative value of entropy. The X-ray crystal structure of the 1:1 inclusion complex between TMeQ[6] and AMPy revealed that AMPy exists in the elliptical cavity of TMeQ[6].
ISSN:2470-1343
2470-1343
DOI:10.1021/acsomega.2c06989