Synthesis, characterization and hydrogenation catalysis in biphasic medium (organic/water) of samarium (III) complex with glycine and 2,2-bipyridine ligands

• Cardozo, Eduardo ^[1] ; Vielma, Joel E. ^[2] ; Fontal Rivera, Bernardo ^[2] ; Contreras, Ricardo R. ^[2] ; Reyes, Marisela del Carmen ^[2] ; Bellandi Rullo, Fernando ^[2] ; Fonseca Velázquez, Yuraima Josefina ^[2] ; Romero, Victoria ^[2]
  1. [1] Universidad de Los Andes (ULA)
  2. [2] Universidad de Los Andes (ULA) Facultad de Ciencias, Departamento de Química Laboratorio de Organometálicos
• Localización: Avances en Química, ISSN-e 1856-5301, Vol. 10, Nº. Extra 0, 2015, págs. 21-24
• Idioma: español
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• Resumen

  • Sm(bipy)(glycine)3 [bipy = 2,2-bipyridine] was synthesized by classic, microwave and mechanical methods. UV-Vis reveals a strong signal near 190 nm corresponding to a high energy Sm-O bond and f→f transitions. FT-IR spectra show a band between 490 - 450 cm-1 indicative of a Sm-O bond. TGA-DTA and MS analytical analysis, confirm the structural proposals. The samarium (III) complex was tested in 1-hexene hydrogenation, in biphasic media (cyclohexane/water) and the reaction parameters were optimized (time, temperature, substrate/catalyst ratio and H2 pressure). Catalyst showed 37.5 % conversion.