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The Porphyrin Twist: Hückel and Möbius Aromaticity
Author(s) -
Jux Norbert
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200705568
Subject(s) - aromaticity , twist , porphyrin , flexibility (engineering) , chemical physics , chemistry , solid state , computational chemistry , crystallography , photochemistry , molecule , mathematics , organic chemistry , geometry , statistics
An interesting twist : Expanded porphyrins possess Möbius‐strip‐like structures in the solid state and in solution. The high conformational flexibility of individual groups enables a temperature‐ and solvent‐dependent switch between Hückel and Möbius aromaticity. Group 10 metals can serve as clamps to stabilize the twist of the Möbius structure (see picture).
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