Inclusion Complex Formation between a Novel Anionic Cyclophane and Cationic Aromatic Guests in Aqueous Solution

I H -N ~~ spectral studies have shown that a negatively charged cyclophane (2) having eight carboxylate groups that are bonded directly on the aromatic rings forms 1:l inclusion complexes selectively with positively charged aromatic comounds as guests in alkaline water.Substrate selectivity in complex formation is one of the goals in host-guest chemistry.Considering that selective