Rate Acceleration in Olefin Metathesis through a Fluorine−Ruthenium Interaction

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Abstract
The synthesis, structure, and performance of new ruthenium-based olefin metathesis catalysts, featuring fluorinated NHC ligands are presented. The introduction of halogen atoms into the N-heterocyclic carbene ligand profoundly alters the catalytic activity and can afford a more efficient catalyst. Structural investigations suggest that a fluorine−ruthenium interaction is responsible for this increased activity.