Synthesis and characterization of binuclear rhenium(I) complexes containing bifunctional ligands

The ligand exchange reaction of the anionic binuclear rhenium complexes Re2(CO)6(OR)3- (R = H (1), or Me (2)) has been studied with the bifunctional ligands 2-aminophenol (3), 4-hydroxypyridine (4), 3-hydroxybenzoic acid (5), and 3-pyridylcarbinol (6). The reactivity the pendant pyridyl group of 6 was studied in reactions with the Lewis acids ZnCl2 (7), and AgPF6 (8). Crystal structure determinations for several of these derivatives have been carried out which reveal both discrete and polymeric complexes upon addition of the Lewis base.

Several derivatives of Re2(CO)6 have been synthesized that contain bifunctional ligands. The reactivity of the these ligands toward additional Re fragments and the Lewis acids Zn(II) and Ag(I) have been explored.Figure optionsDownload as PowerPoint slide