Q15-15-26E

Question

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

Step-by-Step Solution

Verified

Answer

Five possible resonance structures of phenanthrene

1Resonance

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

2Resonance 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

Q15-15-27

Q15-15-25E

Other exercises in this chapter

Q15-15-28

In 1932, A. A. Levine and A. G. Cole studied the ozonolysis of o-xylene and isolated three products: glyoxal, 2,3-butanedione, and pyruvaldehyde:In what ratio w

View solution

Q15-15-27

Look at the five resonance structures for phenanthrene (Problem 15-26), and predict which of its carbon-carbon bonds is the shortest.

View solution

Q15-15-25E

Anthracene has four resonance structures, one of which is shown. Draw the other three

View solution

Q15-15-24

Look at the three resonance structures of naphthalene shown in Section 15-6, and account for the fact that not all carbon-carbon bonds have the same length. The

View solution