UNAM-1: a robust Cu and Cu containing 3D-hydrogen-bonded framework with permanent porosity and reversible SO sorption

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 II Cu I 12 (HL) 12 ] 10− and [Me 2 NH 2 ] + units, which displays a surface area of 522 m 2 g −1 and reversibly adsorbs SO 2 (3.5 mmol g −1 ). [Cu II Cu I 12 (HL) 12 ] 10− and [Me 2 NH 2 ] + ions assemble into a unique 3D hydrogen-bonded framework.