Polymetallic dendrimer

Scheme 8.1. Balzani et al. s11-31 pyridyl-based building blocks have afforded entrance into novel polymetallic dendrimers.

Campagna S, Di Pietro C, Loiseau F, et al. Recent advances in luminescent polymetallic dendrimers containing the 2,3-bis(2 -pyridyl (pyi azine bridging ligand. Coord Chem Rev 2002 229 67-74. 

Recent advances with luminescent polymetallic dendrimers containing the 2,3-fe(2 -pyridyl)pyrazine bridging ligand 02CCR(229)67. 

Some metallodendrimers with one or more stereogenic centers have been prepared without control of the chirality. Vogtle and Balzani [74] have tried several strategies to prepare dendrimers in which a ruthenium cation is the core of the final compound. In these compounds, the only centre of chirality is that of the metal, but as it was not controlled racemic mixtures were obtained. Controlling the stereochemistry of the starting complex would have allowed the authors to prepare a optically pure metallodendrimer. Denti, Campagna, Balzani, and their co-workers have studied polymetallic dendrimers based on bipyridine and 2,3- 7s -(2-pyridyl)pyrazine (2,3-... 

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