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Pentamer—the black sheep in the family! FeII-mediated complexation of acetyl-protected, carbohydrate-functionalized 3,5-di(2,2′:6′,2′′-terpyridinyl)arenes possessing a 120° angle between two terpyridines afforded the predesigned hexamer and the unexpected pentamer (see scheme); both formed self-assembled nanofibers.
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Chan et al. (2010) studied this question.
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