Author/Authors :
Lukyanenko، نويسنده , , Nikolay G. and Kirichenko، نويسنده , , Tatiana I. and Lyapunov، نويسنده , , Alexander Yu. and Kulygina، نويسنده , , Catherine Yu. and Simonov، نويسنده , , Yurii A. and Fonari، نويسنده , , Marina S. and Botoshansky، نويسنده , , Mark M.، نويسنده ,
Abstract :
Two representatives of a novel class of crownophanes containing fragments of fluorenone and stilbene bridged by units of diethylene glycol and triethylene glycol, respectively, have been synthesized. The crystal structure and complexation behavior of these crownophanes were studied. They form much stronger complexes with dibenzylammonium hexafluorophosphate (logKa value in CH3CN is equal to 3.92 ± 0.06 and 4.40 ± 0.05, respectively) than benzocrown ethers. This makes them an attractive alternative for benzocrown ethers as components in supramolecular synthesis.
Keywords :
Stilbene , Dibenzylammonium hexafluorophosphate , crownophane , Fluorenone , complexation
