Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC03522A, Communication Jingjing Chen, Fugang Li, Zihao Zhao, Xiaokang Wang, Rongming Wang, Daofeng Sun To separate acetylene (C2H2) and carbon dioxide (CO2) with similar properties, discovering new metal-organic framework (MOF) adsorbents is vital to advancing practical applications. Herein, we report a three-dimensional Cu-MOF, [Cu(BDC-tetrazole)]...