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Organic Chemistry

9th Edition
John E. McMurry
Publisher: Cengage Learning
ISBN: 9781305080485

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BuyFindarrow_forward

Organic Chemistry

9th Edition
John E. McMurry
Publisher: Cengage Learning
ISBN: 9781305080485
Chapter 14.SE, Problem 66AP
Textbook Problem
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Benzene has an ultraviolet absorption at λmax = 204 nm, and paratoluidine has λmax = 235 nm. How do you account for this difference?

Chapter 14.SE, Problem 66AP, Benzene has an ultraviolet absorption at λmax  204 nm, and paratoluidine has λmax  235 nm. How do

Interpretation Introduction

Interpretation:

The difference between the UV absorption maxima of benzene (204 nm) and p- toluidine (235 nm) is to be accounted.

Concept introduction:

A shift in UV absorption maxima to higher wavelengths is observed with increase in conjugation and/or with increase in the number of alkyl substituents.

To account:

For the difference between the UV absorption maxima of benzene (204 nm) and para toluidine (235 nm).

Explanation of Solution

Systems with extended conjugation will have higher UV absorption maximum. The lone pair of electrons on N in p-toluidine is in conjugation with the ring double bonds...

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Chapter 14 Solutions

Organic Chemistry
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