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Back Cover: Si IV Incorporation into a [28]Hexaphyrin That Triggered Formation of Möbius Aromatic Molecules (Chem. Eur. J. 27/2014)
Author(s) -
Ishida Shinichiro,
Tanaka Takayuki,
Lim Jong Min,
Kim Dongho,
Osuka Atsuhiro
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201490111
Subject(s) - aromaticity , chemistry , intramolecular force , hydrogen bond , molecule , stereochemistry , organic chemistry
The first synthesis of [28]hexaphyrin–silicon complexes has been achieved. The coordination sphere of the encapsulated Si IV atom effectively twisted the skeletons of the complexes leading to features consistent with Möbius aromaticity. Selective desilylation of the [28]hexaphyrin–Si IV complex under Tamao–Fleming oxidation conditions gave the free base β‐monohydroxylated [28]hexaphyrin analogue, which also demonstrated distinct Möbius aromaticity. This is the first example of a Möbius aromatic [28]hexaphyrin conformationally rigidified by intramolecular hydrogen‐bonding interactions. For more information, see the Communication of D. Kim, A. Osuka et al. on page 8274 ff.