Space-Separated 1,10-Phenanthroline, 4,5-Diazafluorene, or 3,6-Di(2-pyridyl)pyridazine Units as Ligands in Diruthenium Complexes: Preliminary Studies of Metal–Metal Interactions


  • This work was funded by the Australian Research Council (ARC Senior Research Fellowship to R. N. W. (1992–1996), grants to (R. N. W. and F. R. K.) and Central Queensland University. Dr. G. A. Heath and co-workers (Australian National University) are thanked for their assistance in undertaking spectroelectrochemical studies on the dinuclear species. D. N. B thanks the Centre for Molecular Architecture, Central Queensland University for the award of a Senior Visiting Fellowship (1995).


original image

In new bridging ligands the chelating groups listed in the title are fused to the termini of rigid molecular spacers. The resulting bisbidentate ligands such as those shown below have been prepared with matching and different terminal groups, and the coordination centers are arranged with varying separations and orientations. Selected bridging ligands and polypyridylruthenium(II) moieties were used to prepare dinuclear complexes, which were examined in electrochemical experiments. E [DOUBLE BOND] CO2CH3.