Redraw the structure of indigo below with explicit double bonds drawn in the aromatic rings. Now draw two resonance structures of indigo each which have a single negative charge on a different oxygen. This extended conjugation is part of what makes indigo absorb visible light.

Redraw the structure of indigo below with explicit double bonds drawn in the aromatic rings. Now draw two resonance structures of indigo each which have a single negative charge on a different oxygen. This extended conjugation is part of what makes indigo absorb visible light.

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter21: Benzene And The Concept Of Aromaticity

Section: Chapter Questions

Problem 21.16P: Which of the molecules and ions given in Problem 21.15 are aromatic according to the Hckel criteria?...

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Diol

In chemistry there are so many chemical compounds that have a hydroxyl group but a chemical compound having two hydroxyl groups (-OH) is termed as a diol. It also implies the presence of two alcohols whereas polyols contain two or more than two hydroxyl groups (-OH). Glycol or 1,2-diol is an aliphatic diol that has two alcohol groups on adjacent carbon atoms. In industries, the most commonly used diol is ethylene glycol.

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Please answer..

4. Redraw the structure of indigo below with explicit double bonds drawn in
the aromatic rings. Now draw two resonance structures of indigo each
which have a single negative charge on a different oxygen. This extended
conjugation is part of what makes indigo absorb visible light.

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