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Chemistry · L5 · Wilkinson's Catalyst: A Homogeneous Hydrogenation Cycle

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The classic Rh(I)/Rh(III) catalytic cycle for alkene hydrogenation by Wilkinson's catalyst, tracing electron count through dissociation, oxidative addition, ligand association, migratory insertion, and reductive elimination.

by @openstemUpdated Chemistry
RhCl(PPh3)316 e⁻ resting stateRhCl(PPh3)214 e⁻ active speciesRhClH2(PPh3)216 e⁻ · Rh(III)alkene-bound dihydride18 e⁻alkyl-hydride complex16 e⁻dissociation − PPh3Oxidative addition of H2Alkene associationMigratory insertion alkene inserts into Rh–HReductive elimination releases alkane

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