A new microporous metal-organic framework with a novel trinuclear nickel cluster for selective CO2 adsorption

摘要

A new microporous Ni-based metal-organic framework (Ni-MOF-1) was synthesized by reaction of Ni (NO)(3)center dot 6H(2)O with the binary ligands of tetracarboxylic 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine (H4TCPP) and 4,4'-bipyridine under solvothermal reaction. The single crystal X-ray diffraction indicates that Ni-MOF-1 possesses a three-dimensional porous network with novel trinuclear Ni-3(OH)(2)(COO)(4)(HCOO)(4) clusters, exhibiting high CO2 uptakes of 37.57 cm(3) g(-1) and high selectivity of CO2 over N-2 (42.89) at 273 K.