Hydroquinone-treated Cu3(BTC)2: A mixed-valence Cu(I/II) MOF catalyst for efficient cycloadditions

We present a mixed-valence Cu(I) 1 Cu(II) 2 (BTC) 2 [henceforth Cu(I/II)-HKUST-1], post-synthetically prepared via the hydroquinone (H 2 Q) treatment of Cu(II) 3 (BTC) 2 (also referred to as HKUST-1) and its subsequent catalytic activity. This Cu(I/II)-HKUST-1 exhibits exceptional...