Artículos de revistas
Sobre uma degenerescência acidental nos deslocamentos químicos de RMN de 31P{¹H} em complexos difosfínicos de rutênio
Fecha
2008Registro en:
Química Nova, v.31, n.4, p.807-812, 2008
0100-4042
10.1590/S0100-40422008000400019
Autor
VALLE, Eliana Maira Agostini
NASCIMENTO, Fabio Batista do
FERREIRA, Antonio Gilberto
BATISTA, Alzir A.
MONTEIRO, Marcos Cláudio Rodrigues
MACHADO, Sérgio de Paula
ELLENA, Javier
CASTELLANO, Eduardo E.
AZEVEDO, Eduardo Ribeiro de
Institución
Resumen
The [RuCl(bipy)(dppb)(4-pic)]PF6 complex was prepared and fully characterized. The X-ray crystal structure of this complex was determined in order to make an unambiguous distinction between the two possible positions of the 4-methylpyridine ligand (4-pic) in the compound: trans to phosphorus atom or trans to nitrogen atom. The [RuCl(bipy)(dppb)(4-pic)]PF6 complex exhibits an unusual temperature-dependent accidental degeneracy of the 31P chemical shifts in its solution NMR spectrum.