title: A well-defined Pd hybrid material for the Z-selective semihydrogenation of alkynes characterized at the molecular level by DNP SENS.
abstract: Direct evidence of the conformation of a Pd-N heterocyclic carbene (NHC) moiety imbedded in a hybrid material and of the Pd-NHC bond were obtained by dynamic nuclear polarization surface-enhanced NMR spectroscopy (DNP SENS) at natural abundance in short experimental times (hours). Overall, this silica-based hybrid material containing well-defined Pd-NHC sites in a uniform environment displays high activity and selectivity in the semihydrogenation of alkynes into Z-alkenes (see figure).
authors: Laboratory of Inorganic Chemistry, ETH Zürich, Wolfgang Pauli Strasse 10, 8093 Zürich (Switzerland).
authors: Matthew P
authors: MP
authors: Conley
authors: Ruben M
authors: RM
authors: Drost
authors: Mathieu
authors: M
authors: Baffert
authors: David
authors: D
authors: Gajan
authors: Cornelis
authors: C
authors: Elsevier
authors: W Trent
authors: WT
authors: Franks
authors: Hartmut
authors: H
authors: Oschkinat
authors: Laurent
authors: L
authors: Veyre
authors: Alexandre
authors: A
authors: Zagdoun
authors: Aaron
authors: A
authors: Rossini
authors: Moreno
authors: M
authors: Lelli
authors: Anne
authors: A
authors: Lesage
authors: Gilles
authors: G
authors: Casano
authors: Olivier
authors: O
authors: Ouari
authors: Paul
authors: P
authors: Tordo
authors: Lyndon
authors: L
authors: Emsley
authors: Christophe
authors: C
authors: Copéret
authors: Chloé
authors: C
authors: Thieuleux
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D000480:Alkynes / Q000737:chemistry*; D006865:Hydrogenation; D009682:Magnetic Resonance Spectroscopy; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D008968:Molecular Conformation; D010165:Palladium / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D000475:Alkenes; D000480:Alkynes; C030011:carbene; D010165:Palladium; D012822:Silicon Dioxide; D008697:Methane
keywords: NMR spectroscopy; carbenes; hybrid materials; palladium; semihydrogenation