2,2 -Bipyridine ligands basic structure

A number of basic studies toward the application of carbohydrates as ligands for the [M(CO)3]+ entity have been described. Kliifers et al. demonstrated the ability of the hydroxy groups in a variety of carbohydrates to bind in different, pH and stoichiometry dependent ways to rhenium. A variety of complexes were structurally characterized [77]. Finally, two 1-thioglucose entities have been coupled to a central 4,4 -bipyridine ligand. These unique conjugates could be labeled at high dilution, exhibited perfect in vitro stability but were not yet subjected to biological studies [78]. 

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