Premium
Über die Wirkung von Auxochromen in Flavyliumsalzen, III. 7‐Dimethylamino‐flavyliumsalze
Author(s) -
Kokkinos Konstantinos,
Wizinger Robert
Publication year - 1973
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19730560318
Subject(s) - chemistry , perchlorate , maxima , absorption (acoustics) , convergence (economics) , ion , organic chemistry , optics , economics , economic growth , art , physics , performance art , art history
The absorption maximum at longest wave lengths of the 7‐dimethylaminoflavylium perchlorate being shifted by 121 nm to longer wave lengths than the maximum of the flavylium perchlorate and yet the auxochromes in 4′‐position having a less strong effect in the 7‐dimethylamino‐flavylium salts than in the flavylium salts, the absorption maxima of both series converge strongly. In the case of the 4′‐dimethylamino derivatives the convergence reaches the high value of 61 nm.