Buckling Cluster-based H-Bonded Icosahedral Capsules and Their Propagation to a Robust Zeolite-like Supramolecular Framework

Hydrogen-bonded assembly of multiple components into well-defined icosahedral capsules akin to virus capsids, has been elusive. In parallel, constructing robust zeolitic-like cluster-based supramolecular frameworks (CSFs) without any coordination bond linkages is challenging. Here, we report the first cluster-based pseudoicosahedral H-bonded capsule Cu60, which is buckled by the self-organization of judiciously designed constituent clusters and anions. The formation of the icosahedron in the solid state takes advantage of 48 charge-assisted CH···F hydrogen bonds between cationic clusters and anions (PF6-), and is highly sensitive to the surface ligands on the clusters with minor structural modification inhibiting its formation. Most excitingly, an extended three-periodic robust zeolitic-like CSF, is inaugurally constructed by edge-sharing the resultant icosahedrons. The perpendicular channels of the CSF feature unusual 3D orthogonal double-helical patterns. The CSF not only keeps its single-crystal character in the desolvated phase, but also exhibits excellent chemical and thermal stabilities as well as long-lived phosphorescence emission.