Author/Authors
AKSU ATEŞ, Nilüfer Anadolu University - Faculty of Sciences - Department of Chemistry, Turkey , BERBER, Halil Anadolu University - Faculty of Sciences - Department of Chemistry, Turkey , YAMAN, Müjgan Eskişehir Osmangazi University - Faculty of Arts Sciences - Chemistry Department, Turkey
Title Of Article
SYNTHESIS, CHARACTERIZATION AND SPECTROSCOPIC STUDIES ON TAUTOMERISM AND ACIDITY CONSTANTS OF CERTAIN 4-(PHENYLDIAZENYL) BENZENE-1,3-DIOL DERIVATIVES
شماره ركورد
41879
Abstract
In this study, monoazo dyes were synthesized through the diazotization of several substituted aminobenzenes and couplings with benzene-1,3-diols. The chemical structures of these compounds were characterized using spectroscopic techniques. The tautomeric properties of the 4- (phenyldiazenyl)benzene-1,3-diol derivative compounds were examined using UV-Vis. spectrophotometry in pure polar or apolar media (dimethyl sulfoxide, ethanol, chloroform, benzene and cyclohexane) under acidic and basic conditions at 25±1 °C, 35±1 °C and 45±1 °C. The percentage of the azo-hydrazone tautomers was calculated for all of the compounds. The UV-Vis. analysis reveals that the azo form is dominant in the presence of azo-hydrazone tautomerism for all azo dyes. Concurrently, the acidity constants for these derivatives were determined using a UV-Vis. spectroscopic technique at 25 °C (±0.1 °C).
From Page
11
NaturalLanguageKeyword
Azo dyes , Azo , hydrazone tautomerism , Ionization constants , Acidity constants.
JournalTitle
Eskişehir Technical University Journal of Science and Technology B - Theoretical Sciences
To Page
28
JournalTitle
Eskişehir Technical University Journal of Science and Technology B - Theoretical Sciences
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