Supported organometallic complexes: Part XXX. Hydroformylation of 1-hexene in interphases — the influence of different kinds of inorganic–organic hybrid co-condensation agents on the catalytic activity

A novel mono-T-silyl functionalized triphenylphosphine ligand was prepared by a simple coupling reaction of (p-aminophenyl)diphenylphosphine and 3-triethoxysilylpropylisocyanate. The corresponding carbonylchlorobisphosphinerhodium(I) complex ClRh(CO)[PPh2C6H4NHCONH(CH2)3Si(OEt)3]2 was synthesized in order to be sol–gel processed with various amounts of different D- and T-silyl bifunctionalized co-condensation agents. The polysiloxane matrices and the active rhodium centers were investigated by means of multinuclear solid state NMR (13C, 29Si, 31P) and dynamic NMR measurements. The rhodium containing xerogels were applied in the hydroformylation of 1-hexene. These stationary phases show remarkable catalytic activities independent on the solvent. An enhancement of the activities is achieved when T-silyl bifunctionalized co-condensation agents are used to build up the carrier matrix.