Development of MOF-5-like ultra-microporous metal-squarate frameworks for efficient acetylene storage and separation

A series of ultra-microporous MOF-5-like metal-squarate frameworks exhibit moderate C 2 H 2 uptake capacity, in addition to excellent C 2 H 2 /CO 2 and C 2 H 2 /C 2 H 4 separation ability regulated by strong hydrogen bond interactions.