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Inne
Inversion triggered by protonation : a rubyrin with embedded α,β′-pyridine moieties.
Autorzy
Rok wydania
2018
Czasopismo
Angewandte Chemie - International Edition
Numer woluminu
57
Strony
16866-16870
DOI
10.1002/anie.201811138
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Incorporation of α,β′‐pyridine into a [26]hexaphyrin(1.1.0.1.1.0) frame resulted in formation of 29,33‐diaza‐A,D‐di‐p‐benzi[26]hexaphyrin (A,D‐di‐p‐pyrirubyrin), which acquires a strictly planar conformation with two nitrogen pyridine atoms directed to the center of the macrocyclic core. The mode of α,β′‐pyridine incorporation results in efficient 26‐electron π‐conjugation, as shown by the clear spectroscopic and structural aromatic features. The formation of the trication and tetracation through protonation is accompanied by a conformational flip of one or two pyridinium moieties to result in N‐confused or doubly N‐confused conformers of the original macrocyclic frame.
Adres publiczny
http://dx.doi.org/10.1002/anie.201811138