Cucurbit[6]uril: Organic molecular porous material with permanent porosity, exceptional stability, and acetylene sorption properties

(Figure Presented) Holely organic solid: Effective packing of the rigid macrocycle cucurbituril through C-H⋯O hydrogen-bonding and van der Waals interactions leads to a honeycomb-like structure with unprecedented stability and porosity. It shows extraordinary sorption properties toward gases, particularly acetylene, which are comparable or superior to those of metal-organic frameworks in terms of storage capacity.