Abstract

VARGAS-MALVAEZ, Edgar; PIMENTEL, Georgina; TRUJILLO, Gustavo  and  MARTIN, Erika. Synthesis of Rhodium (I) Complexes with Mono and Dithiolato Ligands: Application in Catalytic Hydroformylation of Olefins. J. Mex. Chem. Soc [online]. 2007, vol.51, n.1, pp.33-38. ISSN 1870-249X.

The thiols,1-phenylethanothiol 1 and 2,4-pentanodithiol 2 were synthesised and used to prepare binuclear rhodium species 3, 4 of the type [Rh₂(µ-L)_n(cod)₂] (L = 1, n = 2; L = 2, n = 1; cod = 1,5cyclooctadiene). NMR and FAB⁺ mass spectrometry data are consistent with a binuclear structure for the species. These complexes, plus PPh₃ or diphosphines (dppp, dppb), were used as catalytic precursors for the hydroformylation of styrene under mild conditions. Fairly good activities and regioselectivities were achieved for catalytic system 3/ PPh₃.

Keywords : Thiolato ligands; sulphur ligands; binuclear complex; rhodium complex; homogeneous catalysis; hydroformylation.

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