A microporous lanthanide metal-organic framework containing channels: Synthesis, structure, gas adsorption and magnetic properties

Abstract

Under solvothermal condition, the reaction of furan-2,5-dicaboxylate (H2FDA) and glycol with Gd(NO3)3·6H2O gave microporous lanthanide metal-organic framework (MOF), {[Gd(FDA)1.5(glycol)]·1.5H2O}}n (1). This compound was characterized by single crystal X-ray diffraction, infrared spectroscopy, elemental analysis, thermogravimetry analysis, and powder X-ray diffraction. The Gd(III) ions were connected by carboxylic group of FDA2− to give 1D chains, which were further linked by FDA2−, forming a 3D porous framework with 3D channels. Gas adsorption properties with N2, H2 and CO2 of the compound were studied. Magnetic studies show that there are weak ferromagnetic interactions transmitted by µ1,3 carboxylic group between the Gd(III) ions.