Molecular Engineering. Part 13. Formation of Hemicarcerand Dimer by Metal Coordination

Various heterobridged hemicarceplexes in which the fourth bridging unit differs from the other three bridging units were reported by Cram et al. and the fourth bridging unit has been used to adopt an additional binding site or to connect with another hemicarcerand to obtain covalently linked dimeric hemi-carceplexes. The characteristics of container molecules can be accumulated when they are assembled to highly ordered supramolecular systems. Dimeric container system could duplex the functions of monomeric container molecule and a well-ordered multiple container system would result in a new high density information storage system