Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Molecular structures of some hydroxyazo compounds and their derivatives

 
: Dessouki, H.A.; Nolting, F.; Zetzsch, C.

Spectrochimica Acta. A 44A (1988), No.8, pp.845-848 : Abb.
ISSN: 0370-8322
ISSN: 1386-1425
English
Journal Article
Fraunhofer ITA ( ITEM) ()
hydroxyazo compound; infrared spectra; IR-absorption spectra; sigma-hydroxyazophenyl derivative; spectroscopy

Abstract
The IR-absorption spectra of 14 sigma-hydroxyazophenyl derivatives with increasing number of fused benzene rings of the aryl moiety are studied in solid stare, in CCl4 solution and in nujol mull. The IR-spectral bands are assigned indicate that these compounds exist in two tautomer forms. The OH group of the aryl moiety to the azo groups is responsible for the hydrazone structure. If solutions in CCl4 are exposed to sunlight the strongly coloured compounds undergo a rapid bleaching, leading to a destruction of the azo group accompanied by an increase of hydrazone structures.

: http://publica.fraunhofer.de/documents/PX-24941.html