CONCAVE REAGENTS - PART 27 - STERIC REQUIREMENTS OF INTRAANNULAR SUBSTITUENTS IN A,D-BRIDGED CALIX[6]ARENES

Authors
LUNING U ROSS H THONDORF I
Citation
U. Luning et al., CONCAVE REAGENTS - PART 27 - STERIC REQUIREMENTS OF INTRAANNULAR SUBSTITUENTS IN A,D-BRIDGED CALIX[6]ARENES, Perkin transactions. 2, (6), 1998, pp. 1313-1317
Citations number
40
Categorie Soggetti
Chemistry Physical","Chemistry Inorganic & Nuclear
Journal title
Perkin transactions. 2 → ACNP
ISSN journal
03009580
Issue
6
Year of publication
1998
Pages
1313 - 1317
Database
ISI
SICI code
0300-9580(1998):6<1313:CR-P2->2.0.ZU;2-7
Abstract
A series of A,D-m-xylylene bridged calix[6]arenes 5 carrying substitue nts of different size in 2-position of the bridge have been investigat ed by dynamic NMR spectroscopy and by force field methods. Molecular m echanics calculations indicate a bean shaped conformation as the globa l energy minimum in which the calixarene scaffold adopts a half-pinche d/half-winged arrangement.