A New More Sulfur-Resistant Rhodium Complex as an Alternative to the Traditional Wilkinson's Catalyst

LIPRANDI, DOMINGO; QUIROGA, MÓNICA; CAGNOLA, EDGARDO; L'ARGENTIERE, PABLO

INDUSTRIAL & ENGINEERING CHEMICAL RESEARCH

American Chemical Society

Lugar: Columbus, Ohio, USA; Año: 2002 vol. 41 p. 4906 - 4910

0888-5885

<!-- /* Font Definitions */ @font-face {font-family:SimSun; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:"Arial Unicode MS"; mso-font-charset:134; mso-generic-font-family:auto; mso-font-format:other; mso-font-pitch:variable; mso-font-signature:1 135135232 16 0 262144 0;} @font-face {font-family:"@SimSun"; panose-1:0 0 0 0 0 0 0 0 0 0; mso-font-charset:134; mso-generic-font-family:auto; mso-font-format:other; mso-font-pitch:variable; mso-font-signature:1 135135232 16 0 262144 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; text-autospace:none; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:SimSun; mso-ansi-language:ES;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> A new rhodium complex was obtained using tridecylamine as ligand. The procedure was carried out in a relative simple equipment and under mild conditions of pressure and temperature. The complex so obtained showed similar activity and higher sulfur resistance than the Wilkinson’s complex in heterogeneous conditions for the hydrogenation of cyclohexene to cyclohexane at low values of pressure and temperature. FTIR results indicated that the tridecylamine molecule is present in the coordination sphere of the rhodium complex. Elemental Microanalysis and XPS results suggested that the complex formula is [RhCl(NH2(CH2)12CH3)3]; XPS also suggested that the complex suffered an insertion of a sulfur atom into the rhodium coordination sphere after poisoning with tetrahydrothiophene.