Transformation of Metallacyclopentadiene to Metallacyclopropene on Bimetallic Ditantalum Scaffold

摘要

Dinuclear complexes are minimum entities of metal clusters, and the proximity of two metal centers provide a unique cooperative scaffold for transforming substrates stoichiometrically and catalytically. We focused our attention on dinuclear complexes supported by hydrocarbon bridging ligands to keep two metals proximately in a close relation to their intermediacy in any catalytic reactions of unsaturated hydrocarbons.1 We herein report three reactions of a ditantallacyclopentadiene complex 1 bearing a chloride-bridged dinuclear tantalum motif.