Inorganic and organometallic hemicage podates and cage cryptates incorporating a benzene platform

This review surveys the different binding motifs and properties of hemicaged and caged complexes bearing tripodal units with a benzene platform. Complexes of inorganic cations and anions are the objects of this review. The 1:1 stoichiometry frequently observed for hemicage host–guest complexes constitutes a general paradigm for binding, one to which is not always adhered. Insight into the impact of preorganization, host selectivity and functionality will become apparent.

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► Review of hemicaged and caged structures based on a tripodal benzene scaffold.
► Synthetic strategies for hemicage construction are summarized.
► Inclusion complexes with inorganic cationic and anionic guests are analyzed.
► Transition metal complexes with hemicage ligands are surveyed.
► Covalently and supramolecularly assembled caged structures are presented.