Divalent Silicon-Assisted Activation of Dihydrogen in a Bis(N-heterocyclic silylene)xanthene Nickel(0) Complex for Efficient Catalytic Hydrogenation of Olefins
Yuwen Wang, Arseni Kostenko, Shenglai Yao and Matthias Driess*
*Metalorganics and Inorganic Materials, Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, Sekr. C2, 10623 Berlin, Germany, Email: matthias.driesstu-berlin.de
Y. Wang, A. Kostenko, S. Yao, M. Driess, J. Am. Chem. Soc., 2017, 139, 13499-13506.
DOI: 10.1021/jacs.7b07167 (free Supporting Information)
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Ni complexes of bis(N-heterocyclic silylene)xanthene ligands are strikingly efficient precatalysts for homogeneous hydrogenation of olefins with a wide substrate scope under 1 bar H2 pressure at room temperature. DFT calculations reveal a novel mode of H2 activation, in which the silicium atoms are involved in the H2 cleavage and hydrogen transfer to the olefin.
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