Folding of a Supramolecular Framework Based on a Tetrametallic Clip Driven by π−π Interactions

Supramolecular extended frameworks based on a rotational molecular clip and having the same “primary structure” can exhibit either an unfolded or a folded framework. This process is driven by intramolecular π−π interactions, resulting in the formation of an infinite π-stacked column within the folded supramolecular framework.