SOLID-STATE NMR-SPECTROSCOPY OF CALIX[4]ARENE-BASED CARCEPLEXES

Citation
Ama. Vanwageningen et al., SOLID-STATE NMR-SPECTROSCOPY OF CALIX[4]ARENE-BASED CARCEPLEXES, Supramolecular chemistry, 9(1), 1998, pp. 31-36
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
ISSN journal
1061-0278
Volume
9
Issue
1
Year of publication
1998
Pages
31 - 36
Database
ISI
SICI code
1061-0278(1998)9:1<31:SNOCC>2.0.ZU;2-C
Abstract
C-13 CP/MAS spectroscopy of calix[4]arene-based carceplexes shows that in the solid state the cavity walls of the carcerand are rigid, where as the pendant groups of the resorcin[4]arene as well as the ends of t he propyl goups of the calix[4]arene moiety exhibit some flexibility. Temperature dependent H-2 measurements of the DMSO-d(6) carceplex reve al that two different sites are present for the DMSO guest with an ene rgy difference of 1.7 kcal mol(-1).