Chapter 7, Problem 7.20A

Interpretation Introduction

(a)

Interpretation:

A structural formula for anisole should be drawn showing positions of multiple bonds and lone pairs.

Concept introduction:

The strategy for identifying multiple bonds and lone pairs in an organic molecule is to look at each atom of the structure, what is needed to complete their octet and a bond or a lone pair, (except hydrogen) should be determined. Elements in the different groups of the periodic table can form a different number of bonds.

Interpretation Introduction

(b)

Interpretation:

Using curved arrows, the method of converting between the original structure and two additional resonance structures should be shown.

Concept introduction:

Resonance structures are two or more electron-dot structures that describe the electronic bonding of a particular molecule. Resonance structures can be used to indicate the delocalized electrons which cannot be shown by a single electron-dot structure. The average of all resonance structures is called resonance hybrid.