Holely organic solid: Effective packing of the rigid macrocycle cucurbituril through CH⋅⋅⋅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.
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Lim et al. (2008) studied this question.
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