Synthesis of a bimetallic P-N bridged rhodium (I)-ruthenium (II) complex: Application in the hydroformylation reaction

Ksenia Kartashova (1) , Sonia Mallet-Ladeira (1) , M. Rosa Axet (1, 2, 3)

1 LCC - Laboratoire de chimie de coordination
2 Toulouse INP - Institut National Polytechnique (Toulouse)
3 departament de quimica fisica i quimica inorganica i quimica analitica i quimica organica

The reaction of [Rh(acac)(PPh2Py)(2)] (acac = acetylacetonate, PPh2Py = 2 (diphenylphosphino)pyridine) with [Cp*Ru(CH3CN)(3)][OTf] (Cp* = pentamethylcyclopentadienyl, OTf = trifluoromethanesulfonate) provides a cationic bimetallic complex [Cp*Ru(PPh2Py)(2)Rh(acac)][OTf], in which a ruthenium rhodium coordinate (dative covalent) bond is formed. The structure was ascertained by single crystal X-ray diffraction. The catalytic performances of the bimetallic complex were evaluated in the hydroformylation reaction of 1-octene and compared to those of the in situ formed catalysts and the mononuclear counterparts. The catalysis results point out that the bimetallic complex is fragmenting under hydroformylation conditions, which was confirmed by NMR analysis.

Domaines: Chimie de coordination

Ksenia Kartashova, Sonia Mallet-Ladeira, M. Rosa Axet. Synthesis of a bimetallic P-N bridged rhodium (I)-ruthenium (II) complex: Application in the hydroformylation reaction. Journal of Organometallic Chemistry, 2015, 799-800, pp.226-231. ⟨10.1016/j.jorganchem.2015.09.033⟩. ⟨hal-01913097⟩