Reduction of a Chelating Bis(NHC) Palladium(II) Complex to [{μ-bis(NHC)}2Pd2H]+: A Terminal Hydride in a Binuclear Palladium(I) Species Formed under Catalytically Relevant Conditions


  • X-ray data were obtained on MX1 at the Australian Synchrotron, Victoria, Australia.29 We thank the Australian Government for an Australian Partnership Scholarship (APS) under the Australia Indonesia Partnership for Reconstruction and Development (AIPRD), The University of Auckland for research and study leave support, and Dr. Ross O. Piltz for assistance with neutron data reduction. NHC=N-heterocyclic carbene ligand.


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Half-way house: The first palladium(I) N-heterocyclic carbene complex has been isolated in high yield by the base-assisted reduction of a palladium(II) precursor. The location of the unique terminal hydride (see picture; PdI cyan, H white, N blue) was established by neutron crystal structure determination, and the solution fluxional behavior of the complex was explored.