Molecular Paneling Through Metal-Directed Self-Assembly

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Metal-directed self-assembly is widely recognized as an efficient method for constructing well-defined discrete structures. Among the many fascinating structures that have been prepared by this method, recent interest is in large three-dimensional compounds with a large cavity in the framework. Following on from the preceding chapter, which dealt with various three-dimensional coordination assemblies, this chapter focuses on a unique approach to three-dimensional assemblies via “molecular paneling”. Families of planer exomultidentate organic ligands (molecular panels) are found to assemble into large three-dimensional assemblies through metal coordination. In particular, cis-protected square planer metals [e.g. (en)Pd2+, en = ethylenediamine] are shown to be very useful to panel molecules. Metal-assembled cages, bowl, tube, capsule, and polyhedra, are efficiently constructed by this approach.