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Tight Xenon Confinement in a Crystalline Sandwich‐like Hydrogen‐Bonded Dimeric Capsule of a Cyclic Peptide
Author(s) -
Pizzi Andrea,
Ozores Haxel Lionel,
Calvelo Martín,
GarcíaFandiño Rebeca,
Amorín Manuel,
Demitri Nicola,
Terraneo Giancarlo,
Bracco Silvia,
Comotti Angiolina,
Sozzani Piero,
Bezuidenhout Charl X.,
Metrangolo Pierangelo,
Granja Juan R.
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201906599
Subject(s) - xenon , dimer , crystallography , supramolecular chemistry , molecule , nuclear magnetic resonance spectroscopy , hydrogen bond , chemistry , hydrogen , materials science , crystal structure , stereochemistry , organic chemistry
A cyclic hexapeptide with three pyridyl moieties connected to its backbone forms a hydrogen‐bonded dimer, which tightly encapsulates a single xenon atom, like a pearl in its shell. The dimer imprints its shape and symmetry to the captured xenon atom, as demonstrated by 129 Xe NMR spectroscopy, single‐crystal X‐ray diffraction, and computational studies. The dimers self‐assemble hierarchically into tubular structures to form a porous supramolecular architecture, whose cavities are filled by small molecules and gases.