The bridged tri imidazoliums 3·3X --5·3X - (X -=PF - 6, Br -, I -) and bis imidazoliums 6·2PF - 6 were synthesized by N quaternization of imidazole derivative 1 in acetonitrile under ref...The bridged tri imidazoliums 3·3X --5·3X - (X -=PF - 6, Br -, I -) and bis imidazoliums 6·2PF - 6 were synthesized by N quaternization of imidazole derivative 1 in acetonitrile under reflux. UV spectroscopic titration experiments showed that the halide salts and hexafluorophosphate salts of these imidazoliums exhibited good recognition toward anions in water and in acetonitrile, respectively.展开更多
文摘The bridged tri imidazoliums 3·3X --5·3X - (X -=PF - 6, Br -, I -) and bis imidazoliums 6·2PF - 6 were synthesized by N quaternization of imidazole derivative 1 in acetonitrile under reflux. UV spectroscopic titration experiments showed that the halide salts and hexafluorophosphate salts of these imidazoliums exhibited good recognition toward anions in water and in acetonitrile, respectively.
