Synthesis and characterization of bifunctional compounds:: Templates for metal crown ether assemblies

(dppe)Pd-salicylimine cations and (dppe)Pd-catecholate complexes with dangling primary ammonium ions are excellent donors for 18-crown-6 (18-c-6) and benzo-18-c-6 receptors. The self-assembly of these host-guest complexes from their constituent components is efficient, and two X-ray-generated structures showing atom connectivity are reported. A discussion of N-imine isomers of the Schiff base-derived 4-aminobenzylamine is also included.