A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, name: 5,5′-Dibromo-2,2′-bipyridine, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15862-18-7, Name is 5,5′-Dibromo-2,2′-bipyridine, molecular formula is C10H6Br2N2. In a Article, authors is Zhu, Yuan-Yuan，once mentioned of 15862-18-7
Metal?organic frameworks (MOFs) have been extensively used for single-site catalysis and light harvesting, but their application in multicomponent photocatalysis is unexplored. We report here the successful incorporation of an IrIII photoredox catalyst and a NiII cross-coupling catalyst into a stable Zr12 MOF, Zr12-Ir-Ni, to efficiently catalyze C?S bond formation between various aryl iodides and thiols. The proximity of the IrIII and NiII catalytic components to each other (ca. 0.6 nm) in Zr12-Ir-Ni greatly facilitates electron and thiol radical transfers from Ir to Ni centers to reach a turnover number of 38 500, an order of magnitude higher than that of its homogeneous counterpart. This work highlights the opportunity in merging photoredox and organometallic catalysts in MOFs to effect challenging organic transformations.
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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI