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Inne
Shaping a porphyrinoid frame by heteroatoms extrusion: formation of an expanded [22]triphyrin(6.6.0).
Autorzy
Rok wydania
2019
Czasopismo
Numer woluminu
25
Strony
10088-10097
DOI
10.1002/chem.201901571
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
An aromatic expanded triphyrin, [22]triphyrin(6.6.0) 2, containing a pyrrole unit, a bipyrrole moiety, and annulene links, was obtained from a tellurium‐containing precursor meso‐tetraaryl‐26,28‐ditellurasapphyrin 1. The reaction path proceeds through an acid‐promoted tellurium extrusion from 1 yielding directly 2, characterized in a dicationic form by X‐ray crystallography. In solution the neutral macrocycle 2 reveals flexibility typical for annulenes and it exists as a mixture of conformers that differ by the configuration of the annulene fragments, as proven by 1H NMR studies and analyzed by DFT methods. The conformation is controlled by protonation state, the nature of an interacting anion, solvent identity, and by interaction with water.
Słowa kluczowe
anions, annulenes, host-guest systems, tellurium, Triphyrin
Adres publiczny
http://dx.doi.org/10.1002/chem.201901571
Strona internetowa wydawcy
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