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

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 FDA^2- to give 1D chains, which were further linked by FDA^2-, forming a 3D porous framework with 3D channels. Gas adsorption properties with N₂, H ₂ and CO₂ of the compound were studied. Magnetic studies show that there are weak ferromagnetic interactions transmitted by μ_1,3 carboxylic group between the Gd(III) ions.