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Updated: Feb 18, 2026
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Phosphonate-Mediated Immobilization of Rhodium/Bipyridine Hydrogenation Catalysts
Florian Forato1, Anouar Belhboub1, Julien Monot2
1Chimie Et Interdisciplinarité: Synthèse Analyse Modélisation (CEISAM), University of Nantes, CNRS, UMR 6230, 2, rue de la Houssinière, BP 92208, 44322, Nantes Cedex 3, France.
Abstract:
RhL2 complexes of phosphonate-derivatized 2,2'-bipyridine (bpy) ligands L were immobilized on titanium oxide particles generated in situ. Depending on the structure of the bipy ligand-number of tethers (1 or 2) to which the phosphonate end groups are attached and their location on the 2,2'-bipyridine backbone (4,4'-, 5,5'-, or 6,6'-positions)-the resulting supported catalysts showed comparable chemoselectivity but different kinetics for the hydrogenation of 6-methyl-5-hepten-2-one under hydrogen pressure. Characterization of the six supported catalysts suggested that the intrinsic geometry of each of the phosphonate-derivatized 2,2'-bipyridines leads to supported catalysts with different microstructures and different arrangements of the RhL2 species at the surface of the solid, which thereby affect their reactivity.
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