Data/hora: 10/06/2024 18:03:18

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 24/09/2009
Data da última atualização: | 23/05/2018
Autoria: | RIBEIRO, P. E. A.; DONNICI, C. L.; SANTOS, E. N. dos.
Afiliação: | PAULO EDUARDO DE AQUINO RIBEIRO.
Título: | Cationic rhodium (I) complexes containing 4,4,'-disubstituted 2,2,'-bipyridines: a systematic variation on electron density over the metal centre.
Ano de publicação: | 2006
Fonte/Imprenta: | Journal of Organometallic Chemistry, v. 691, p. 2037-2043, 2006.
Idioma: | Inglês
Conteúdo: | A series of [Rh(COD)(X2-bipy)]BF4 complexes (COD = 1,5-cyclooctadiene; X2-bipy = 4,4'-disubstituted 2,2'-bipyridines; X = OCH3, CH3, H, Cl or NO2) has been prepared from [Rh(COD)Cl]2. The complexes for X = OCH3, Cl and NO2 have not been described previously in the literature. All complexes have been characterised by elemental analysis, IR, 1H NMR and UV?Vis spectrometry. This series of complexes presents a wide variation on electron density over the metal centre with virtually no variation on its steric environment which discloses interesting possibilities for catalytic and electro-catalytic studies. A preliminary evaluation of these complexes on the hydroformylation of camphene and ß-pinene showed that under the rather drastic conditions employed the complexes acted as a precursor for [Rh(CO)3H], which accounts for most of the catalytic activity.
Palavras-Chave: | Cationic rhodium(I) complexes; Hydroformylation; Rhodium catalysts; Substituted bipyridine.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (21833-1) - ADD - AP - DD -  -  -  - DIS