Rigid, non-porous and tunable hybrid p-aminobenzoate/TiO2 materials: Toward a fine structural determination of the immobilized RhCl(Ph3)3 complex

J. Espinas, R. Rahal, E. Abou-Hamad, M. El Eter, J.-M. Basset
Journal of Organometallic Chemistry, volume 784, 103-108, (2015)

Rigid, non-porous and tunable hybrid p-aminobenzoate/TiO2 materials: Toward a fine structural determination of the immobilized RhCl(Ph3)3 complex

Keywords

Wilkinson complex, Rhodium, Solid-state phosphorous NMR spectroscopy, Surface organometallic chemistry, Titanium dioxide, Well-defined immobilized complex

Abstract

​By exchange of ligands, Wilkinson complex RhCl(PPh3)3 are immobilized on p-aminobenzoate/TiO2 with different organic loading (6, 11 and 16%). This new hybrid material exhibit a linear correlation between the ligand content of the starting TiO2 and the rhodium loading, showing the accessibility of all surfaces amines fonctions on the non-porous parent materials. 1H, 13C, and 1D, 2D INAQUEDATE refocused and J-resolved 31P solid-state NMR confirm the well-defined structure [(≡TiO)22-O2C–C6H4–NH2)RhCl-cis-(PPh3)2]. New immobilized catalysts show interesting activity in cyclohexene hydroformylation.

Code

DOI:10.1016/j.jorganchem.2014.12.032

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