title: A new one-pot synthesis of novel hetarylazo-heterocyclic colorants and study of their solvatochromic properties.
abstract: A simple synthetic strategy for synthesis of new series of hetarylazo-heterocycles is described. The effects of solvent on their electronic absorption spectra were analyzed using Kamlet-Taft equation. The results of fitting coefficients indicated that the solvatochromism of the studied compounds is mainly due to the solvent polarity rather than the solvent basicity and acidity.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt.
authors.forename: Ahmad S
authors.initials: AS
authors.lastname: Shawali
authors.affiliation: Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt.
authors.forename: Magda A
authors.initials: MA
authors.lastname: Abdallah
authors.affiliation: Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt.
authors.forename: Mohamed A
authors.initials: MA
authors.lastname: Kandil
keywords: 3-Chloroformazans; Azo compounds; Heterocycles; Imidazoles; Pyrazoles; Solvatochromism