Abstract
Ditopic "hard"-"soft" metal binding-sites composed of four EtS(CH2)nNHCOCH2O-groups were designed for the first time on a calix[4]arene platform. N = 2 is too short to form a bimetallic complex whereas n = 6 is long enough to accept two metal ions. 1H NMR spectral studies established that although Cd2+ bound to the "soft" binding-site excludes Na+ out of the "hard" binding-site, Ag+ can be co-existent with Na+ in the ionophoric cavity.
Original language | English |
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Pages (from-to) | 4157-4160 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 35 |
Issue number | 24 |
DOIs | |
Publication status | Published - Jun 13 1994 |
All Science Journal Classification (ASJC) codes
- Biochemistry
- Drug Discovery
- Organic Chemistry