Novel synthesis of a dinuclear ruthenium(II) polypyridyl complex based on a polymeric carbonyl complex

by Puckett, Latisha M.; Durham, Bill

There are several methods for the synthesis of dinuclear ruthenium(II) polypyridyl complexes. However, most methods do not provide pure dimeric complexes suitable for photochem. studies without chromatog. sepns. Many of the previously used syntheses are based on the coupling of two monomeric complexes to form the dimeric complex. This results in a mixt. of monomeric and dimeric complexes. The present work focuses on the development of a novel synthetic method utilizing the polymeric carbonyl complex [Ru(CO)2Cl2]n and 5, 5'-Bi-1,10-phenanthroline to produce a ruthenium dimeric complex. This approach provides good yields with a range of polypyridine ligands. Interestingly the synthetic scheme works poorly with others types of ligands such as noncyclic amines and nitriles.