Nanocage-Based Porous Metal–Organic Frameworks Constructed from Icosahedrons and Tetrahedrons for Selective Gas Adsorption

Two isostructural nanocage-based porous Ni/Co­(II)-MOFs have been hydrothermally synthesized, which were interestingly composed of icosahedron and tetrahedron cages with a new (3,8)-connected 3D topology. Moreover, the stable Ni-MOF exhibits good selective CO2/CH4 and CO2/N2 adsorption owing to its exposed nitrogen active sites.