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Mo(CO)3(NCMe)(PPh3)2: Synthesis, X-ray structure and evaluation of its catalytic activity for the homogeneous hydrogenation of olefins and their mixtures |
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| Authors: | Pablo J. Baricelli Luis G. Melean Santiago Ricardes Victor Guanipa Mariandry Rodriguez Carlos Romero Alvaro J. Pardey Sergio Moya Merlin Rosales |
| Affiliation: | a Centro de Investigaciones Químicas, Facultad de Ingeniería, Universidad de Carabobo, Valencia, Carabobo 2005, Venezuela b Departamento de Química Tecnológica, Facultad de Ingeniería, Universidad de Carabobo, Valencia, Venezuela c Centro de Equilibrios en solución, Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, Venezuela d Departamento de Química Aplicada, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile e Laboratorio de Química Inorgánica, Departamento de Química, Facultad Experimental de Ciencias, Universidad del Zulia, Ado. 526, Maracaibo, Venezuela |
| Abstract: | The complex Mo(CO)3(NCMe)(PPh3)2, was synthesized by the reaction of Mo(NCMe)3(CO)3 with two equivalents of PPh3 and characterized by UV–Vis, IR, NMR and X-ray diffraction. This complex was used as a catalyst precursor for the hydrogenation of 1-hexene, styrene, cyclohexene and 2,3-dimethyl-1-butene and their mixtures under moderate conditions in homogeneous media. Under mild reaction conditions (T = 373 K, P = 60 atm), the substrates showed the following reactivity order: styrene > 1-hexene > cyclohexene > 2,3-dimethyl-1-butene. A quaternary equimolar mixture showed a different hydrogenation order: 1-hexene > cyclohexene > styrene > 2,3-dimethyl-1-butene; the presence of dibenzothiophene or mercury does not interfere with the activity of the catalyst. |
| Keywords: | X-ray structure Molybdenum complex Olefin Hydrogenation |
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