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Issue 20, 2013
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Synthesis of palladium(0) and -(II) complexes with chelating bis(N-heterocyclic carbene) ligands and their application in semihydrogenation

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Abstract

A transmetallation route, using silver(I) precursors, to several zero- and di-valent palladium complexes with chelating bis(N-heterocyclic carbene) ligands bearing various N-substituents has been established. The resulting complexes have been characterized by NMR and mass spectroscopy. In addition, the structure of a representative compound, [Pd0(bis-(Mes)NHC)(η2-ma)] (3a), was confirmed by X-ray crystal structure determination. In contrast to the transfer semihydrogenation, in which only low activity was observed, complex 3a showed activity (TOF = 49 molsub molcat−1 h−1) and selectivity comparable to its monodentate counterparts in the semihydrogenation of 1-phenyl-1-propyne with molecular hydrogen.

Graphical abstract: Synthesis of palladium(0) and -(ii) complexes with chelating bis(N-heterocyclic carbene) ligands and their application in semihydrogenation

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Publication details

The article was received on 27 Nov 2012, accepted on 14 Jan 2013 and first published on 16 Jan 2013


Article type: Paper
DOI: 10.1039/C3DT32835J
Citation: Dalton Trans., 2013,42, 7365-7372
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    Synthesis of palladium(0) and -(II) complexes with chelating bis(N-heterocyclic carbene) ligands and their application in semihydrogenation

    S. N. Sluijter, S. Warsink, M. Lutz and C. J. Elsevier, Dalton Trans., 2013, 42, 7365
    DOI: 10.1039/C3DT32835J

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