H. Plenio et R. Diodone, A FLUORINE-CONTAINING CRYPTAND FOR THE COMPLEXATION OF ANIONS AND THEUTILITY OF F-19 NMR-SPECTROSCOPY FOR THE DETERMINATION OF HOST GUEST ASSOCIATION, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 50(7), 1995, pp. 1075-1078
The first fluorine-containing cryptand F-3-TREN 4 for the complexation
of anions was prepared in the 3+2-condensation reaction of 2-fluoro-1
,3-phthalaldehyde 3 with tris(2-aminoethyl)amine and subsequent reduct
ion with NaBH4. Upon incorporation of anionic guests 4 . 6HClO(4) expe
riences shifts of its F-19 NMR resonances and thus demonstrates the ad
vantages of studying host-guest association by F-19 NMR spectroscopy.