COMPLEXATION PROPERTIES AND CHARACTERIZATION OF 4 CONFORMERS OF A [2.1.2.1]METACYCLOPHANE

Authors
SAWADA T TSUGE A THIEMANN T MATAKA S TASHIRO M
Citation
T. Sawada et al., COMPLEXATION PROPERTIES AND CHARACTERIZATION OF 4 CONFORMERS OF A [2.1.2.1]METACYCLOPHANE, Journal of inclusion phenomena and molecular recognition in chemistry, 19(1-4), 1994, pp. 301-313
Citations number
18
Categorie Soggetti
Chemistry,Crystallography
Journal title
Journal of inclusion phenomena and molecular recognition in chemistry → ACNP
ISSN journal
09230750
Volume
19
Issue
1-4
Year of publication
1994
Pages
301 - 313
Database
ISI
SICI code
0923-0750(1994)19:1-4<301:CPACO4>2.0.ZU;2-S
Abstract
Cone, partial cone, 1,2-alternate, and 1,4-alternate conformers of tet rakis[(ethoxycarbonyl)-methoxyl [2.1.2.1]metacyclophane (MCP, 2) were isolated and characterized by H-1-NMR and an X-ray crystal structure a nalysis of the 1,4-alternate conformer. Of the four conformers, only t he cone conformer 2d forms a complex with alkali metals. The stability constants of 2d with alkali metal ions were determined by the direct H-1-NMR method and UV spectra, and the order observed as potassium << cesium, sodium ions.