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Elektronenstruktur und physikalisch‐chemische Eigenschaften von Azo‐Verbindungen. Teil VII: Notiz über das Absorptions‐Spektrum und die Basizität des p‐Trimethylammonium‐phenyl‐azo‐azulen‐Kations
Author(s) -
Gerson F.,
Schulze J.,
Heilbronner E.
Publication year - 1960
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.19600430208
Subject(s) - chemistry , azulene , medicinal chemistry , substituent , protonation , organic chemistry , ion
The spectroscopic properties and the basicity of p‐trimethylammonium‐phenylazo‐azulene support the conclusions drawn in a previous paper concerning the influence of −M and +M active substituents on the spectrum of phenyl‐azo‐azulene. They also verify the structure previously assigned to the protonated p‐dimethylamino‐phenyl‐azo‐azulene. A σ p ‐value of 0·66 ± 0·03 for the trimethylammonium substituent has been obtained.