Outside Front Cover: A Redox‐Active Mesoporous Cobalt–Pyrazolate Framework for Reversible O ₂ Sorption (Angew. Chem. Int. Ed. 12/2026)

In the Research Article (e22510), Tao He, Jian-Rong Li, and co-workers report a building-unit symmetry tuning strategy that enables the first csq-type pyrazolate metal-organic framework (MOF). The resulting mesoporous framework integrates high structural robustness with redox activity, allowing rapid and fully reversible O2 sorption. Mechanistic study directly visualizes the reversible redox process, establishing a platform for elucidating gas-framework interactions and redox chemistry in stable MOFs.