Title: The Spectral Absorption of Certain Monoazo Dyes: I. The Effect of Position Isomerism on the Spectral Absorption of Methyl Derivatives of Benzeneazophenol (Classic Reprint)
Publisher: Forgotten Books
Publication Date: 2018
Language: English
ISBN 10: 0331081989
ISBN 13: 9780331081985
Binding: HRD
Condition: New
Weight: 268 grams

About this title

Synopsis

How substituent position changes light absorption in monoazo dyes

This concise, data-driven study investigates how placing methyl and hydroxyl groups on benzeneazophenol affects its spectral absorption. It shows how substituents shift band positions and alter band magnitudes, with careful comparisons across solvents like alcohol, sodium hydroxide, and hydrochloric acid.

The work presents a consistent pattern: two principal absorption bands, a strong first band and a smaller second band, whose positions depend on the substituent and solvent. It also discusses how the bands may consist of two overlapping components, and how changing the solvent or substituent shifts frequencies and intensities. A notable aim is to use spectral data to infer substituent positions in complex molecules.

Learn how position isomerism influences the spectral bands of benzeneazophenol and its methyl derivatives.
See how solvent choice (alcohol, sodium hydroxide solution, or acid) changes band positions and shapes.
Understand a method proposed for analyzing spectra to locate substituent positions in related compounds.
Get a sense of the broader relationship between chemical structure and light absorption in monoazo dyes.

Ideal for readers of dye chemistry, spectroscopy, and the history of chemical research seeking a clear, example-driven look at structure–spectra links.

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