Cooperative interaction of protonated 1,4-diazabicyclo[2.2.2]octane with a hexaarylbenzene-based receptor: an experimental and theoretical study

Abstract

The stability constant of a hexaarylbenzenebased receptor-protonated 1,4-diazabicyclo[2.2.2]octane complex dissolved in nitrobenzene saturated with water was determined from extraction experiments in the twophase water/nitrobenzene system and c-activity measurements. Using quantum-mechanical calculations (DFT), the most probable structure of this complex was derived.