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Free, publicly-accessible full text available November 25, 2025
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We report the electrocatalytic Oxygen Reduction Reaction on a rigid Co( ii ) porphyrin prism scaffold bridged by Ag( i ) ions. The reactivity of this scaffold differs significantly from previous prism catalysts in that its selectivity is similar to that of monomer (∼35% H 2 O) yet it displays sluggish kinetics, with an order of magnitude lower k s of ∼0.5 M −1 s −1 . The deleterious cofacial effect is not simply due to metal–metal separation, which is similar to our most selective prism catalysts. Instead we conclude the structural rigidity is responsible for these differences.more » « less
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