Abstract
Solvothermal reaction of 3-aminoisonicotinic acid (Haina) and Cu(NO3)(2)center dot 2.5H(2)O gave a novel two-imensional (2D) microporous metal-organic framework, [Cu(aina)(2)(DMF)]center dot DMF (I, DMF = N,N-dimethylformamide). Single-crystal X-ray crystallographic study of compound 1 revealed that Cu(II) ions are linked by aina(-) gands forming square grid-like layers, which stack together via multiple hydrogen bonding interactions. The solvent-free framework of la displayed considerable porosity (void = 46.5%) with one-dimensional (1D) open channels (4.7 angstrom x 4.8 angstrom) functionalized by amino groups. Gas sorption measurements of 1 revealed selective carbon dioxide (CO2) and acetylene (C2H2) adsorption over methane (CH4) and nitrogen (N-2) at ambient temperature. (C) 2017 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.