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Chapter 15: Q15-15-26E (page 477)

Phenanthrene has five resonance structures, one of which is shown. Draw the other four.

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Five possible resonance structures of phenanthrene

Step by step solution

01

Resonance

The delocalization of electrons in the molecule is called resonance. It can also be said as being the property of a molecule to be written in two forms having the same molecular structure but a different arrangement of atoms. A molecule exhibiting delocalization, cannot be depicted using a single Lewis-dot structure. The various Lewis-dot structures describing the delocalization of electrons in a molecule are contributing structures or canonical forms

02

Resonance structure of Phenanthrene

The resonance structure of phenanthrene can be drawn by alternating the pi bond. Thus, the five resonance structures possible for phenanthrene are as follows:

Five possible resonance structures of phenanthrene

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Most popular questions from this chapter

The compound below is the product initially formed in a Claisen rearrangement (Section 18-4). This product is not isolated but tautomerizes to its enol form. Give the structure of the enol and provide an explanation as to why the enol tautomer is favored.

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