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Premium Elektronenstruktur und physikalisch‐chemische Eigenschaften von Azo‐Verbindungen Teil V: Über den Einfluss von Substituenten auf das Absorptions‐Spektrum des Phenyl‐azo‐azulens, ein Beitrag zur Kenntnis der P LATTNER 'schen Verschiebungsregel
Author(s)
Gerson F.,
Heilbronner E.
Publication year1959
Publication title
helvetica chimica acta
Resource typeJournals
PublisherWILEY‐VCH Verlag GmbH
Abstract It is shown that for phenyl‐azo‐azulenes substituted in the benzene nucleus (1) the position Ṽ B.I of the band corresponding to the long‐wave transition depends linearly on the Hammett σ x value of the substituent X (2) the shift ΔṼ B.II of the intense π→π* transition at 24 000 cm −1 on protonation of the azo link depends linearly on σ x , provided that σ x ‐ σ′ x is negative.
Subject(s)benzene , chemistry , ion , medicinal chemistry , organic chemistry , protonation , substituent
Language(s)English
SCImago Journal Rank0.74
H-Index82
eISSN1522-2675
pISSN0018-019X
DOI10.1002/hlca.19590420617

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