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Aromatic Systems with Polymethine‐like Structures: A Structural Comparison of Bis‐ and Tris(dimethylamino)phenalenium Ions
Author(s) -
Staab Heinz A.,
Hofmeister Jörg,
Krieger Claus
Publication year - 1991
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199110301
Subject(s) - tris , ion , delocalized electron , chemistry , electron delocalization , bond length , crystallography , photochemistry , polymer chemistry , crystal structure , organic chemistry , biochemistry
Very different bonding occurs in the bis‐ and tris(dimethylamino)phenalenium ions 1–3 . Whereas 1 and 2 can be divided into polymethine‐like, olefinic, and aromatic substructures on the basis of bond lengths, C 3 ‐symmetric bond delocalization is found for 3 .