Experimental and theoretical study on the interaction of the pyridinium cation with a hexaarylbenzene-based receptor

Extraction experiments in the two-phase water/nitrobenzene system and γ-activity measurements were used to determine the stability constant of a hexaarylbenzene-based receptor/pyridinium complex dissolved in nitrobenzene saturated with water. Further, applying quantum mechanical calculations, the most probable structure of this “asymmetrical” cationic complex was derived.