Organic Chemistry (9th Edition)
Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
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Chapter 15.4, Problem 15.4P
Interpretation Introduction

To determine: The resonance form for the substituted allylic cations in the preceding figures along with explanation of more or less resonance contributor of resonance forms.

Interpretation: The resonance form for the substituted allylic cations in the preceding figures is to be drawn. The second resonance form is a more important or less important resonance contributor than the first structure is to be shown.

Concept introduction: Allenes are the compounds in which two adjacent double bonds share common carbon atoms. These are also known as cumulative dienes. Cumulative dienes are different from conjugated dienes because conjugated dienes comprise double bonds separated by one single bond.

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Draw all possible resonance structures (contributors) for the following compound. Which resonance structure contributes most to the resonance hybrid? Why?
An electrostatic potential map of calicene is shown below. a) Both the electrostatic potential map and its significant dipole moment indicate that calicene is an unusually polar hydrocarbon. Which of the dipolar resonance forms, structure A or structure B, better corresponds to the electron distribution in the molecule? Select the single best answer. b) Which one of the following structures should be stabilized by resonance to a greater extent? Select the single best answer.
Structures with carbocations can often also have resonance forms. Draw the other resonance structure for the molecule

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Organic Chemistry (9th Edition)

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