UNAM-1: a robust CuI and CuII containing 3D-hydrogen-bonded framework with permanent porosity and reversible SO2 sorption

Abstract

The construction of hydrogen-bonded frameworks (HBFs) that express permanent porosity and functionality is challenging due to the delicateness of hydrogen bonds. We present UNAM-1, a robust 3D-HBF fully sustained by charge-assisted H-bonds between [Cu^IICu^I₁₂(HL)₁₂]¹⁰⁻ and [Me₂NH₂]⁺ units, which displays a surface area of 522 m² g⁻¹ and reversibly adsorbs SO₂ (3.5 mmol g⁻¹).