Structure and Selectivity of a Small Dimeric Encapsulating Assembly | Zendy

Valdés Carlos | Zendy; Toledo Leticia M. | Zendy; Spitz Urs | Zendy; Rebek Julius | Zendy

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Structure and Selectivity of a Small Dimeric Encapsulating Assembly

Author(s) -

Valdés Carlos,

Toledo Leticia M.,

Spitz Urs,

Rebek Julius

Publication year - 1996

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.19960020814

Subject(s) - selectivity , intermolecular force , hydrogen bond , molecule , methane , chemistry , proton nmr , crystal structure , crystallography , stereochemistry , organic chemistry , catalysis

The binding selectivity of a dimeric molecular capsule in solution and its X‐ray crystal structure in the solid state are reported. The capsule is a self‐complementary bisglycoluril molecule, formed through a series of intermolecular hydrogen bonds. The dimeric host is capable of discriminating in CDCl 3 solution between methane and ethane as guests, and direct evidence for the selectivity is presented from 1 H NMR studies. The thermodynamic parameters for the encapsulation of methane, obtained from a VT 1 H NMR (500 mHz) study, are presented.

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