Synthesis and characterization of polypiridine-based rhenium(I) complexes with pyrazino[2,3-f][1,10]phenanthroline
Synthesis and characterization of polypiridine-based rhenium(I) complexes with pyrazino[2,3-f][1,10]phenanthroline
Authors
Díaz Harris, Ramiro
Francois, Angelica
Leiva, Ana Maria
Loeb, Barbara
Norambuena, Ester
Yanez, Mauricio
Francois, Angelica
Leiva, Ana Maria
Loeb, Barbara
Norambuena, Ester
Yanez, Mauricio
Profesor Guía
Authors
Date
Datos de publicación:
HELVETICA CHIMICA ACTA,Vol.89,1220-1230,2006
Tipo de recurso
Article
Keywords
Materia geográfica
Collections
Abstract
A series of tricarbonyl rhenium(l) complexes of the type Jac-[Re-I(CO)(3)(ppl)(L)](0/+), where ppl is pyrazino[2,3-f] [1,10]phenanthroline, and where L is Cl-, TfO-, 4-(tert-butyl)pyridine ('Bu-py), 4-methoxypyridine (MeO-py), 4,4'-bipyridyl (bpy), or 10-(picolin-4-yl)phenothiazine (pptz), were synthesized and fully characterized. In all complexes, an increment in the electron-acceptor properties of ppl compared to the free ligand was observed. This effect was more significant for pyridine-type ligands, especially for pptz, compared to Cl- or TfO-. The properties of fac-[Re(CO)(3)(PPl)(pptz)]PF6 were compared with those of the analogous compound fac-[Re(CO)(3)(dppz)(pptz)]PF6, where dppz is dipyrido(3,2-a: 2',3'-c)phenazine, the goal being to generate long-lived excited charge-transfer (CT) states. In this respect, fac-[Re(CO)(3)(PPl)(pptz)]PF6 seems to be a promising candidate.