A novel functionality pattern for terpyridines results from the introduction of halogen, stannyl, and boronic ester functionalities at positions C-5 and C-5″ (see figure). This considerably widens the applicability of this class of tridentate ligands for supra- and macromolecular applications. The feasibility of growth reactions with these novel terpyridines is demonstrated.
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Lehmann et al. (1999) studied this question.